| 0 | PI 685784 | 'GEMN-0044' | Zea mays L. subsp. mays | Iowa, United States | NC7 |  | | 2003 | DEVELOPED | PRE 05/08/2003 | | | | | Cultivar | A parent of GEMS-0044 is CHZM 05 015 which is PI 467165. It is a Chilean accession from the state of Valparaiso that was identified as one of the LAMP (Latin American Maize Project) landrace collections performing in the top 5%. | 1645861 | PI 685784 |
| 1 | PI 685785 | 'GEMN-0045' | Zea mays L. subsp. mays | Iowa, United States | NC7 |  | | 2003 | DEVELOPED | PRE 05/08/2003 | | | | | Cultivar | A parent of GEMS-0045 is CHZM 05 015 which is PI 467165. It is a Chilean accession from the state of Valparaiso that was identified as one of the LAMP (Latin American Maize Project) landrace collections performing in the top 5%. | 1645863 | PI 685785 |
| 2 | PI 685786 | 'GEMN-0046' | Zea mays L. subsp. mays | Iowa, United States | NC7 |  | | 2003 | DEVELOPED | PRE 05/08/2003 | | | | | Cultivar | A parent of GEMS-0046 is CHZM 05 015 which is PI 467165. It is a Chilean accession from the state of Valparaiso that was identified as one of the LAMP (Latin American Maize Project) landrace collections performing in the top 5%. | 1645865 | PI 685786 |
| 3 | PI 685787 | 'GEMN-0047' | Zea mays L. subsp. mays | Iowa, United States | NC7 |  | | 2003 | DEVELOPED | PRE 05/08/2003 | | | | | Cultivar | A parent of GEMS-0047 is URZM 13 085 which is PI 583927. It is a Uruguayan accession from the state of San Jose that was identified as one of the LAMP (Latin American Maize Project) landrace collections performing in the top 5%. | 1645867 | PI 685787 |
| 4 | PI 685788 | 'GEMN-0048' | Zea mays L. subsp. mays | Iowa, United States | NC7 |  | | 2003 | DEVELOPED | PRE 05/08/2003 | | | | | Cultivar | | 1645869 | PI 685788 |
| 5 | PI 685789 | 'GEMS-0049' | Zea mays L. subsp. mays | Iowa, United States | NC7 |  | | 2003 | DEVELOPED | PRE 05/08/2003 | | | | | Cultivar | | 1645871 | PI 685789 |
| 6 | PI 685790 | 'GEMS-0050' | Zea mays L. subsp. mays | Iowa, United States | NC7 |  | | 2003 | DEVELOPED | PRE 05/08/2003 | | | | | Cultivar | | 1645873 | PI 685790 |
| 7 | PI 685791 | 'GEMS-0051' | Zea mays L. subsp. mays | Iowa, United States | NC7 |  | | 2003 | DEVELOPED | PRE 05/08/2003 | | | | | Cultivar | A parent of GEMS-0051 is CUBA 164 which is PI 489361. It is a Cuban accession that was identified as one of the LAMP (Latin American Maize Project) collections performing in the top 5%. | 1645875 | PI 685791 |
| 8 | PI 685792 | 'GEMS-0052' | Zea mays L. subsp. mays | Iowa, United States | NC7 |  | | 2003 | DEVELOPED | PRE 05/08/2003 | | | | | Cultivar | A parent of GEMS-0052 is CUBA 164 which is PI 489361. It is a Cuban accession that was identified as one of the LAMP (Latin American Maize Project) collections performing in the top 5%. | 1645877 | PI 685792 |
| 9 | PI 685793 | 'GEMS-0053' | Zea mays L. subsp. mays | Iowa, United States | NC7 |  | | 2003 | DEVELOPED | PRE 05/08/2003 | | | | | Cultivar | A parent of GEMS-0053 is CUBA 164 which is PI 489361. It is a Cuban accession that was identified as one of the LAMP (Latin American Maize Project) collections performing in the top 5%. | 1645879 | PI 685793 |
| 10 | PI 685794 | 'GEMS-0054' | Zea mays L. subsp. mays | Iowa, United States | NC7 |  | | 2003 | DEVELOPED | PRE 05/08/2003 | | | | | Cultivar | A parent of GEMS-0054 is ARZM 16 035 which is PI 516036. It is an Argentine accession from the state of Mendoza that was identified as one of the LAMP (Latin American Maize Project) landrace collections performing in the top 5%. | 1645881 | PI 685794 |
| 11 | PI 685795 | 'GEMS-0055' | Zea mays L. subsp. mays | Iowa, United States | NC7 |  | | 2003 | DEVELOPED | PRE 05/08/2003 | | | | | Cultivar | A parent of GEMS-0055 is ARZM 16 035 which is PI 516036. It is an Argentine accession from the state of Mendoza that was identified as one of the LAMP (Latin American Maize Project) landrace collections performing in the top 5%. | 1645883 | PI 685795 |
| 12 | PI 685796 | 'GEMN-0056' | Zea mays L. subsp. mays | Iowa, United States | NC7 |  | | 2003 | DEVELOPED | PRE 05/08/2003 | | | | | Cultivar | A parent of GEMS-0056 is FS8B(T) which is PI 536622. FS8B(T) is a synthetic populuation developed by E.S. Horner at the University of Florida that was identified as one of the LAMP (Latin American Maize Project) collections performing in the top 5%. | 1645887 | PI 685796 |
| 13 | PI 685797 | 'GEMN-0057' | Zea mays L. subsp. mays | Iowa, United States | NC7 |  | | 2003 | DEVELOPED | PRE 05/08/2003 | | | | | Cultivar | parent of GEMS-0057 is ARZM 01 150 which is PI 491741. It is an Argentine accession from Buenos Aires that was identified as one of the LAMP (Latin American Maize Project) landrace collections performing in the top 5%. | 1645889 | PI 685797 |
| 14 | PI 685798 | 'GEMN-0058' | Zea mays L. subsp. mays | Iowa, United States | NC7 |  | | 2003 | DEVELOPED | PRE 05/08/2003 | | | | | Cultivar | parent of GEMS-0058 is ARZM 01 150 which is PI 491741. It is an Argentine accession from Buenos Aires that was identified as one of the LAMP (Latin American Maize Project) landrace collections performing in the top 5%. | 1645893 | PI 685798 |
| 15 | PI 685799 | 'GEMN-0059' | Zea mays L. subsp. mays | Iowa, United States | NC7 |  | | 2003 | DEVELOPED | PRE 05/08/2003 | | | | | Cultivar | A parent of GEMS-0059 is Saint Croix 1 which is PI 484036. It is an accession from the island of Saint Croix in the U.S. Virgin Islands that was identified as one of the LAMP (Latin American Maize Project) landrace collections performing in the top 5%. | 1645894 | PI 685799 |
| 16 | PI 685800 | 'GEMN-0060' | Zea mays L. subsp. mays | Iowa, United States | NC7 |  | | 2003 | DEVELOPED | PRE 05/08/2003 | | | | | Cultivar | A parent of GEMS-0060 is Chiapas which is PI 576258. It is a Mexican accession from the state of Chiapas that was identified as one of the LAMP (Latin American Maize Project) landrace collections performing in the top 5%. | 1645895 | PI 685800 |
| 17 | PI 685801 | 'GEMS-0061' | Zea mays L. subsp. mays | Iowa, United States | NC7 |  | | 2003 | DEVELOPED | PRE 05/08/2003 | | | | | Cultivar | A parent of GEMS-0061 is ARZM 16 026 which is PI 516027. It is an Argentine accession from the state of Mendoza that was identified as one of the LAMP (Latin American Maize Project) landrace collections performing in the top 5%. | 1645902 | PI 685801 |
| 18 | PI 685802 | 'GEMS-0062' | Zea mays L. subsp. mays | Iowa, United States | NC7 |  | | 2003 | DEVELOPED | PRE 05/08/2003 | | | | | Cultivar | A parent of GEMS-0062 is ARZM 16 026 which is PI 516027. It is an Argentine accession from the state of Mendoza that was identified as one of the LAMP (Latin American Maize Project) landrace collections performing in the top 5%. | 1645903 | PI 685802 |
| 19 | PI 685803 | 'GEMS-0063' | Zea mays L. subsp. mays | Iowa, United States | NC7 |  | | 2003 | DEVELOPED | PRE 05/08/2003 | | | | | Cultivar | A parent of GEMS-0063 is CUBA 164 which is PI 489361. It is a Cuban accession that was identified as one of the LAMP (Latin American Maize Project) collections performing in the top 5%. | 1645904 | PI 685803 |
| 20 | PI 685804 | 'GEMS-0064' | Zea mays L. subsp. mays | Iowa, United States | NC7 |  | | 2003 | DEVELOPED | PRE 05/08/2003 | | | | | Cultivar | A parent of GEMS-0064 is CUBA 164 which is PI 489361. It is a Cuban accession that was identified as one of the LAMP (Latin American Maize Project) collections performing in the top 5%. | 1645905 | PI 685804 |
| 21 | PI 685805 | 'GEMS-0065' | Zea mays L. subsp. mays | Iowa, United States | NC7 |  | | 2003 | DEVELOPED | PRE 05/08/2003 | | | | | Cultivar | A parent of GEMS-0065 is CUBA 117 which is PI 483816. It is a Cuban accession that was identified as one of the LAMP (Latin American Maize Project) collections performing in the top 5%. | 1645906 | PI 685805 |
| 22 | PI 685806 | 'GEMS-0066' | Zea mays L. subsp. mays | Iowa, United States | NC7 |  | | 2003 | DEVELOPED | PRE 05/08/2003 | | | | | Cultivar | A parent of GEMS-0065 is CUBA 117 which is PI 483816. It is a Cuban accession that was identified as one of the LAMP (Latin American Maize Project) collections performing in the top 5%. | 1645907 | PI 685806 |
| 23 | PI 632413 | 'GEMS-0002' | Zea mays L. subsp. mays | Ohio, United States | NC7 |  | | 2002 | DEVELOPED | 03/24/2002 | | | | | Cultivar | Selected from the GEM FS8(A)S:S09 population. Genetic composition of the population FS8(A)S (PI 536619) is estimated to be approx. 50% BSSS related, 21% tropical, 18% southeastern U.S., and 11% diverse Corn Belt (with a high proportion of inbred C103A). Breeder's seed of GEMS-0002 was increased by controlled full-sib pollination of the S3 in the 2002 OSU nursery. Seed from over 100 ears was bulked for distribution. It has been released to GEM cooperators following the GEM protocol. Mid-silk date is approx. one week earlier than that of B73 in Ohio, and it produces moderate amounts of pollen. Plant height is quite moderate (ave=133.2 cm) and ear placement is slightly below mid-plant height (ave=55.8 cm). Cob color is white and ears generally display 12 kernel rows (average 12.5, range 10-16). Ear width is approx. 3.8 cm (range 3.5 to 4.4 cm). Ear length is approx. 13.2 cm (range 11 to 15 cm). Kernels are yellow to yellow-orange in color and are slightly dented to flinty and have a 100 kernel weight of 21.7 g. Grain protein composition is somewhat elevated (approx. 2 to 2.5 points above B73) and average density is 1.35 g/cc. Line has not been exposed to high levels of foliar or stalk-rotting diseases and definitive information concerning its susceptibility to pests and diseases is unknown. GEMS-0002 is intended as a breeding resource for the improvement and diversification of elite, non-'Lancaster Sure-Crop' related inbreds. Unique in that it has a relatively high proportion of tropical germplasm yet is able to impart earliness to hybrids. It has potential as a source of germplasm in breeding programs throughout much of the U.S. Corn Belt. Recommended that it be introduced into breeding programs by crossing with elite inbreds followed by modified pedigree selection. Using this method, it is anticipated the agronomic characteristics can still be improved since only one cycle of selection has been practiced. | 1641703 | PI 632413 |
| 24 | PI 639037 | 'GEMS-0004' | Zea mays L. subsp. mays | North Carolina, United States | NC7 |  | | 2002 | DEVELOPED | 2001 | | 35.78900000, -78.67500000 | 146 | | Cultivar | Brazilian hybrid DK212T crossed to proprietary stiff stalk line from GEM "company 11". Germplasms were developed by selfing and selecting variable F1s from tropical-source x US inbred crosses in North Carolina under standard nursery conditions, followed by a second selfing/selection season in Homestead, FL (F2S1), and a third selfing/selection season in a selection nursery in Raleigh (F2S2). All procedures were carried out using ear-to-row methods, except that F2 seeds planted in Homestead were bulked by pedigree. Germplasms were selected on the basis of resistance to a mixture of foliar diseases (Southern and Northern Leaf Blight, Anthracnose, Gray Leaf Spot), resistance to Fusarium ear rot, resistance to Anthracnose stalk rot, resistance to lodging , early flowering, synchrony of silk and pollen production, and reduced plant and ear height. This germplasm yields well in the southern US in topcrosses to non-stiff stalk testers compared to elite hybrid checks. It produces yellow kernels, semident in texture with particularly high protein composition. | 1631412 | PI 639037 |
| 25 | PI 639038 | 'GEMS-0005' | Zea mays L. subsp. mays | North Carolina, United States | NC7 |  | | 2002 | DEVELOPED | 2001 | | 35.78900000, -78.67500000 | 146 | | Cultivar | Brazilian hybrid DK212T crossed to proprietary stiff stalk line from GEM "company 11". Germplasms were developed by selfing and selecting variable F1s from tropical-source x US inbred crosses in North Carolina under standard nursery conditions, followed by a second selfing/selection season in Homestead, FL (F2S1), and a third selfing/selection season in a selection nursery in Raleigh (F2S2). All procedures were carried out using ear-to-row methods, except that F2 seeds planted in Homestead were bulked by pedigree. Germplasms were selected on the basis of resistance to a mixture of foliar diseases (Southern and Northern Leaf Blight, Anthracnose, Gray Leaf Spot), resistance to Fusarium ear rot, resistance to Anthracnose stalk rot, resistance to lodging , early flowering, synchrony of silk and pollen production, and reduced plant and ear height. This germplasm yields well in the southern US in topcrosses to non-stiff stalk testers compared to elite hybrid checks. It produces yellow seeds, semident in texture. | 1631413 | PI 639038 |
| 26 | PI 639039 | 'GEMS-0006' | Zea mays L. subsp. mays | North Carolina, United States | NC7 |  | | 2002 | DEVELOPED | 2001 | | 35.78900000, -78.67500000 | 146 | | Cultivar | Brazilian hybrid DK212T crossed to proprietary stiff stalk line from GEM "company 11". Germplasms were developed by selfing and selecting variable F1s from tropical-source x US inbred crosses in North Carolina under standard nursery conditions, followed by a second selfing/selection season in Homestead, FL (F2S1), and a third selfing/selection season in a selection nursery in Raleigh (F2S2). All procedures were carried out using ear-to-row methods, except that F2 seeds planted in Homestead were bulked by pedigree. Germplasms were selected on the basis of resistance to a mixture of foliar diseases (Southern and Northern Leaf Blight, Anthracnose, Gray Leaf Spot), resistance to Fusarium ear rot, resistance to Anthracnose stalk rot, resistance to lodging , early flowering, synchrony of silk and pollen production, and reduced plant and ear height. This germplasm yields well in the southern US in topcrosses to non-stiff stalk testers compared to elite hybrid checks. It has orange to yellow seeds and a semident to semiflint texture and shows common rust resistance. | 1631414 | PI 639039 |
| 27 | PI 639040 | 'GEMS-0009' | Zea mays L. subsp. mays | North Carolina, United States | NC7 |  | | 2002 | DEVELOPED | 2001 | | 35.78900000, -78.67500000 | 146 | | Cultivar | Brazilian hybrid DK212T crossed to proprietary stiff stalk line from GEM "company 11". Germplasms were developed by selfing and selecting variable F1s from tropical-source x US inbred crosses in North Carolina under standard nursery conditions, followed by a second selfing/selection season in Homestead, FL (F2S1), and a third selfing/selection season in a selection nursery in Raleigh (F2S2). All procedures were carried out using ear-to-row methods, except that F2 seeds planted in Homestead were bulked by pedigree. Germplasms were selected on the basis of resistance to a mixture of foliar diseases (Southern and Northern Leaf Blight, Anthracnose, Gray Leaf Spot), resistance to Fusarium ear rot, resistance to Anthracnose stalk rot, resistance to lodging , early flowering, synchrony of silk and pollen production, and reduced plant and ear height. This germplasm yields well in the southern US in topcrosses to non-stiff stalk testers compared to elite hybrid checks. It yielded relatively well in topcrosses in the Midwest compared to other released GEM germplasm of a similar derivation. It flowers at approximately the same time as B73 in the southern US and shows common rust resistance. It has yellow kernels, semiflint to semident in texture. | 1631417 | PI 639040 |
| 28 | PI 639041 | 'GEMS-0010' | Zea mays L. subsp. mays | North Carolina, United States | NC7 |  | | 2002 | DEVELOPED | 2001 | | 35.78900000, -78.67500000 | 146 | | Cultivar | Brazilian hybrid DK212T crossed to proprietary stiff stalk line from GEM "company 11". Germplasms were developed by selfing and selecting variable F1s from tropical-source x US inbred crosses in North Carolina under standard nursery conditions, followed by a second selfing/selection season in Homestead, FL (F2S1), and a third selfing/selection season in a selection nursery in Raleigh (F2S2). All procedures were carried out using ear-to-row methods, except that F2 seeds planted in Homestead were bulked by pedigree. Germplasms were selected on the basis of resistance to a mixture of foliar diseases (Southern and Northern Leaf Blight, Anthracnose, Gray Leaf Spot), resistance to Fusarium ear rot, resistance to Anthracnose stalk rot, resistance to lodging , early flowering, synchrony of silk and pollen production, and reduced plant and ear height. This germplasm yields well in the southern US in topcrosses to non-stiff stalk testers compared to elite hybrid checks. It flowers at approximately the same time as B73 and has orange kernels with a semiflint to semident texture. | 1631418 | PI 639041 |
| 29 | PI 639042 | 'GEMS-0011' | Zea mays L. subsp. mays | North Carolina, United States | NC7 |  | | 2002 | DEVELOPED | 2001 | | 35.78900000, -78.67500000 | 146 | | Cultivar | Brazilian hybrid DK212T crossed to proprietary stiff stalk line from GEM "company 11". Germplasms were developed by selfing and selecting variable F1s from tropical-source x US inbred crosses in North Carolina under standard nursery conditions, followed by a second selfing/selection season in Homestead, FL (F2S1), and a third selfing/selection season in a selection nursery in Raleigh (F2S2). All procedures were carried out using ear-to-row methods, except that F2 seeds planted in Homestead were bulked by pedigree. Germplasms were selected on the basis of resistance to a mixture of foliar diseases (Southern and Northern Leaf Blight, Anthracnose, Gray Leaf Spot), resistance to Fusarium ear rot, resistance to Anthracnose stalk rot, resistance to lodging , early flowering, synchrony of silk and pollen production, and reduced plant and ear height. This germplasm yields well in the southern US in topcrosses to non-stiff stalk testers compared to elite hybrid checks. It has yellow kernels with a semiflint to semident texture. | 1631419 | PI 639042 |
| 30 | PI 639043 | 'GEMS-0012' | Zea mays L. subsp. mays | North Carolina, United States | NC7 |  | | 2002 | DEVELOPED | 2001 | | 35.78900000, -78.67500000 | 146 | | Cultivar | Thai hybrid DK888 crossed to proprietary stiff stalk line from GEM "company 11". Germplasms were developed by selfing and selecting variable F1s from tropical-source x US inbred crosses in North Carolina under standard nursery conditions, followed by a second selfing/selection season in Homestead, FL (F2S1), and a third selfing/selection season in a selection nursery in Raleigh (F2S2). All procedures were carried out using ear-to-row methods, except that F2 seeds planted in Homestead were bulked by pedigree. Germplasms were selected on the basis of resistance to a mixture of foliar diseases (Southern and Northern Leaf Blight, Anthracnose, Gray Leaf Spot), resistance to Fusarium ear rot, resistance to Anthracnose stalk rot, resistance to lodging , early flowering, synchrony of silk and pollen production, and reduced plant and ear height. This germplasm yields extremely well in the southern US in topcrosses to non-stiff stalk testers compared to elite hybrid checks. It produces orange kernels of a semident texture. | 1631420 | PI 639043 |
| 31 | PI 639044 | 'GEMS-0013' | Zea mays L. subsp. mays | North Carolina, United States | NC7 |  | | 2002 | DEVELOPED | 2001 | | 35.78900000, -78.67500000 | 146 | | Cultivar | Thai hybrid DK888 crossed to proprietary stiff stalk line from GEM "company 11". Germplasms were developed by selfing and selecting variable F1s from tropical-source x US inbred crosses in North Carolina under standard nursery conditions, followed by a second selfing/selection season in Homestead, FL (F2S1), and a third selfing/selection season in a selection nursery in Raleigh (F2S2). All procedures were carried out using ear-to-row methods, except that F2 seeds planted in Homestead were bulked by pedigree. Germplasms were selected on the basis of resistance to a mixture of foliar diseases (Southern and Northern Leaf Blight, Anthracnose, Gray Leaf Spot), resistance to Fusarium ear rot, resistance to Anthracnose stalk rot, resistance to lodging , early flowering, synchrony of silk and pollen production, and reduced plant and ear height. This germplasm yields well in the southern US in topcrosses to non-stiff stalk testers compared to elite hybrid checks. It produces orange kernels of a semiflint to semident texture. | 1631421 | PI 639044 |
| 32 | PI 639045 | 'GEMS-0015' | Zea mays L. subsp. mays | North Carolina, United States | NC7 |  | | 2002 | DEVELOPED | 2001 | | 35.78900000, -78.67500000 | 146 | | Cultivar | Thai hybrid DK888 crossed to proprietary stiff stalk line from GEM "company 11". Germplasms were developed by selfing and selecting variable F1s from tropical-source x US inbred crosses in North Carolina under standard nursery conditions, followed by a second selfing/selection season in Homestead, FL (F2S1), and a third selfing/selection season in a selection nursery in Raleigh (F2S2). All procedures were carried out using ear-to-row methods, except that F2 seeds planted in Homestead were bulked by pedigree. Germplasms were selected on the basis of resistance to a mixture of foliar diseases (Southern and Northern Leaf Blight, Anthracnose, Gray Leaf Spot), resistance to Fusarium ear rot, resistance to Anthracnose stalk rot, resistance to lodging , early flowering, synchrony of silk and pollen production, and reduced plant and ear height. This germplasm yields well in the southern US in topcrosses to non-stiff stalk testers compared to elite hybrid checks. It has good gray leaf spot resistance in topcrosses and has yellow kernels, semident in texture. | 1631423 | PI 639045 |
| 33 | PI 639046 | 'GEMS-0017' | Zea mays L. subsp. mays | North Carolina, United States | NC7 |  | | 2002 | DEVELOPED | 2001 | | 35.78900000, -78.67500000 | 146 | | Cultivar | Thai hybrid DK888 crossed to proprietary stiff stalk line from GEM "company 11". Germplasms were developed by selfing and selecting variable F1s from tropical-source x US inbred crosses in North Carolina under standard nursery conditions, followed by a second selfing/selection season in Homestead, FL (F2S1), and a third selfing/selection season in a selection nursery in Raleigh (F2S2). All procedures were carried out using ear-to-row methods, except that F2 seeds planted in Homestead were bulked by pedigree. Germplasms were selected on the basis of resistance to a mixture of foliar diseases (Southern and Northern Leaf Blight, Anthracnose, Gray Leaf Spot), resistance to Fusarium ear rot, resistance to Anthracnose stalk rot, resistance to lodging , early flowering, synchrony of silk and pollen production, and reduced plant and ear height. This germplasm yields well in the southern US in topcrosses to non-stiff stalk testers compared to elite hybrid checks. It has yellow kernels, semiflint to semident in texture. | 1631425 | PI 639046 |
| 34 | PI 639047 | 'GEMS-0018' | Zea mays L. subsp. mays | North Carolina, United States | NC7 |  | | 2002 | DEVELOPED | 2001 | | 35.78900000, -78.67500000 | 146 | | Cultivar | Thai hybrid DK888 crossed to proprietary stiff stalk line from GEM "company 11". Germplasms were developed by selfing and selecting variable F1s from tropical-source x US inbred crosses in North Carolina under standard nursery conditions, followed by a second selfing/selection season in Homestead, FL (F2S1), and a third selfing/selection season in a selection nursery in Raleigh (F2S2). All procedures were carried out using ear-to-row methods, except that F2 seeds planted in Homestead were bulked by pedigree. Germplasms were selected on the basis of resistance to a mixture of foliar diseases (Southern and Northern Leaf Blight, Anthracnose, Gray Leaf Spot), resistance to Fusarium ear rot, resistance to Anthracnose stalk rot, resistance to lodging , early flowering, synchrony of silk and pollen production, and reduced plant and ear height. This germplasm yields well in the southern US in topcrosses to non-stiff stalk testers compared to elite hybrid checks. It also yielded relatively well in topcrosses in the Midwest compared to other released GEM germplasm of a similar derivation. It flowers at approximately the same time as B73 in the southern US. It has common rust and gray leaf spot resistance and produces orange kernels, semident in texture. | 1631426 | PI 639047 |
| 35 | PI 639049 | 'GEMS-0020' | Zea mays L. subsp. mays | North Carolina, United States | NC7 |  | | 2002 | DEVELOPED | 2001 | | 35.78900000, -78.67500000 | 146 | | Cultivar | Thai hybrid DK888 crossed to proprietary stiff stalk line from GEM "company 11". Germplasms were developed by selfing and selecting variable F1s from tropical-source x US inbred crosses in North Carolina under standard nursery conditions, followed by a second selfing/selection season in Homestead, FL (F2S1), and a third selfing/selection season in a selection nursery in Raleigh (F2S2). All procedures were carried out using ear-to-row methods, except that F2 seeds planted in Homestead were bulked by pedigree. Germplasms were selected on the basis of resistance to a mixture of foliar diseases (Southern and Northern Leaf Blight, Anthracnose, Gray Leaf Spot), resistance to Fusarium ear rot, resistance to Anthracnose stalk rot, resistance to lodging , early flowering, synchrony of silk and pollen production, and reduced plant and ear height. This germplasm yields well in the southern US in topcrosses to non-stiff stalk testers compared to elite hybrid checks. It has good gray leaf spot resistance, both in top-crosses and per se. It produces orange and yellow kernels with a semident texture and a high protein content. | 1631428 | PI 639049 |
| 36 | PI 639050 | 'GEMS-0021' | Zea mays L. subsp. mays | North Carolina, United States | NC7 |  | | 2002 | DEVELOPED | 2000 | | 35.78900000, -78.67500000 | 146 | | Cultivar | Thai hybrid DK888 crossed to proprietary stiff stalk line from GEM "company 11". Germplasms were developed by selfing and selecting variable F1s from tropical-source x US inbred crosses in North Carolina under standard nursery conditions, followed by a second selfing/selection season in Homestead, FL (F2S1), and a third selfing/selection season in a selection nursery in Raleigh (F2S2). All procedures were carried out using ear-to-row methods, except that F2 seeds planted in Homestead were bulked by pedigree. Germplasms were selected on the basis of resistance to a mixture of foliar diseases (Southern and Northern Leaf Blight, Anthracnose, Gray Leaf Spot), resistance to Fusarium ear rot, resistance to Anthracnose stalk rot, resistance to lodging , early flowering, synchrony of silk and pollen production, and reduced plant and ear height. This germplasm yields well in the southern US in topcrosses to non-stiff stalk testers compared to elite hybrid checks. It flowers at approximately the same time as B73 in the southern US. It is relatively resistant to Fusarium ear rot and to the accumulation of fumonosin. It produces yellow seed, semident in texture. | 1631401 | PI 639050 |
| 37 | PI 639051 | 'GEMS-0023' | Zea mays L. subsp. mays | North Carolina, United States | NC7 |  | | 2002 | DEVELOPED | 2001 | | 35.78900000, -78.67500000 | 146 | | Cultivar | Thai hybrid DK888 crossed to proprietary stiff stalk line from GEM "company 11". Germplasms were developed by selfing and selecting variable F1s from tropical-source x US inbred crosses in North Carolina under standard nursery conditions, followed by a second selfing/selection season in Homestead, FL (F2S1), and a third selfing/selection season in a selection nursery in Raleigh (F2S2). All procedures were carried out using ear-to-row methods, except that F2 seeds planted in Homestead were bulked by pedigree. Germplasms were selected on the basis of resistance to a mixture of foliar diseases (Southern and Northern Leaf Blight, Anthracnose, Gray Leaf Spot), resistance to Fusarium ear rot, resistance to Anthracnose stalk rot, resistance to lodging , early flowering, synchrony of silk and pollen production, and reduced plant and ear height. This germplasm yields well in the southern US in topcrosses to non-stiff stalk testers compared to elite hybrid checks. It produces yellow kernels, semiflnt in texture. | 1631430 | PI 639051 |
| 38 | PI 639053 | 'GEMS-0028' | Zea mays L. subsp. mays | North Carolina, United States | NC7 |  | | 2002 | DEVELOPED | 2000 | | 35.78900000, -78.67500000 | 146 | | Cultivar | Brazilian hybrid DKXL370A crossed to proprietary stiff stalk line from GEM "company 11". Germplasms were developed by selfing and selecting variable F1s from tropical-source x US inbred crosses in North Carolina under standard nursery conditions, followed by a second selfing/selection season in Homestead, FL (F2S1), and a third selfing/selection season in a selection nursery in Raleigh (F2S2). All procedures were carried out using ear-to-row methods, except that F2 seeds planted in Homestead were bulked by pedigree. Germplasms were selected on the basis of resistance to a mixture of foliar diseases (Southern and Northern Leaf Blight, Anthracnose, Gray Leaf Spot), resistance to Fusarium ear rot, resistance to Anthracnose stalk rot, resistance to lodging , early flowering, synchrony of silk and pollen production, and reduced plant and ear height. This germplasm yields well in the southern US in topcrosses to non-stiff stalk testers compared to elite hybrid checks. It showed good per se resistance to Aspergillus ear rot and to aflatoxin accumulation. It produces yellow kernels, semident in texture. | 1631434 | PI 639053 |
| 39 | PI 639054 | 'GEMS-0029' | Zea mays L. subsp. mays | North Carolina, United States | NC7 |  | | 2002 | DEVELOPED | 2001 | | 35.78900000, -78.67500000 | 146 | | Cultivar | Brazilian hybrid DKXL370A crossed to proprietary stiff stalk line from GEM "company 11". Germplasms were developed by selfing and selecting variable F1s from tropical-source x US inbred crosses in North Carolina under standard nursery conditions, followed by a second selfing/selection season in Homestead, FL (F2S1), and a third selfing/selection season in a selection nursery in Raleigh (F2S2). All procedures were carried out using ear-to-row methods, except that F2 seeds planted in Homestead were bulked by pedigree. Germplasms were selected on the basis of resistance to a mixture of foliar diseases (Southern and Northern Leaf Blight, Anthracnose, Gray Leaf Spot), resistance to Fusarium ear rot, resistance to Anthracnose stalk rot, resistance to lodging , early flowering, synchrony of silk and pollen production, and reduced plant and ear height. This germplasm yields well in the southern US in topcrosses to non-stiff stalk testers compared to elite hybrid checks. It flowers with a few days of B73 in the Midwest. It produces yellow kernels, semident in texture. | 1631435 | PI 639054 |
| 40 | PI 642763 | 'GEMS-0003' | Zea mays L. subsp. mays | North Carolina, United States | NC7 |  | | 2002 | DEVELOPED | 2001 | | 35.78900000, -78.67500000 | 146 | | Cultivar | A parent of GEMS-0003 is SE 032 which is PI 583917. It is a Brazilian accession from Sergipe that was identified as one of the LAMP (Latin American Maize Project) landrace collections performing in the top 5%. | 1631411 | PI 642763 |
| 41 | PI 642764 | 'GEMS-0014' | Zea mays L. subsp. mays | North Carolina, United States | NC7 |  | Not Available | 2002 | DEVELOPED | 2001 | | 35.78900000, -78.67500000 | 146 | | Cultivar | | 1631422 | PI 642764 |
| 42 | PI 642765 | 'GEMS-0016' | Zea mays L. subsp. mays | North Carolina, United States | NC7 |  | | 2002 | DEVELOPED | 2001 | | 35.78900000, -78.67500000 | 146 | | Cultivar | | 1631424 | PI 642765 |
| 43 | PI 639497 | 'GEMN-0033' | Zea mays L. subsp. mays | North Carolina, United States | NC7 |  | | 2001 | DEVELOPED | 2001 | | 35.78900000, -78.67500000 | 146 | | Cultivar | Brazilian population PE1 (also known as BR51403 and PI 583911) was crossed to GEM line N16, a privately-owned inbred line of the non-stiff stalk heterotic group. Germplasms were developed by selfing and selecting variable F1s from tropical-source x US inbred crosses in North Carolina under standard nursery conditions, followed by a second selfing and selection season in Homestead, Florida (F2S1). 990 F2S1 progenies were tested for per-se yield in trials at the Sandhillls Research Station in North Carolina in 1996. The top ten percent were selected for further selfing and topcrossing in a winter nursery in Homestead, Florida. All procedures were carried out using ear-to-row methods, except that F2 seeds planted in Homestead were bulked by pedigree. Germplasms were selected on the basis of resistance to lodging, early flowering, synchrony of silk and pollen production, and reduced plant and ear height. This germplasm yields extremely well in the southern US in topcrosses to stiff stalk testers compared to elite hybrid checks. The kernels are yellow in color and semident in texture. It has good per se grey leaf spot resistance. | 1625382 | PI 639497 |
| 44 | PI 639498 | 'GEMN-0035' | Zea mays L. subsp. mays | North Carolina, United States | NC7 |  | | 2001 | DEVELOPED | 2001 | | 35.78900000, -78.67500000 | 146 | | Cultivar | Brazilian population PE1 (also known as BR51403 and PI 583911) was crossed to GEM line N16, a privately-owned inbred line of the non-stiff stalk heterotic group. Germplasms were developed by selfing and selecting variable F1s from tropical-source x US inbred crosses in North Carolina under standard nursery conditions, followed by a second selfing and selection season in Homestead, Florida (F2S1). 990 F2S1 progenies were tested for per-se yield in trials at the Sandhillls Research Station in North Carolina in 1996. The top ten percent were selected for further selfing and topcrossing in a winter nursery in Homestead, Florida. All procedures were carried out using ear-to-row methods, except that F2 seeds planted in Homestead were bulked by pedigree. Germplasms were selected on the basis of resistance to lodging, early flowering, synchrony of silk and pollen production, and reduced plant and ear height. This germplasm yields extremely well in the southern US in topcrosses to stiff stalk testers compared to elite hybrid checks. The kernels are yellow cap in color and semiflint in texture. It has good per se grey leaf spot resistance. | 1625384 | PI 639498 |
| 45 | PI 639499 | 'GEMN-0036' | Zea mays L. subsp. mays | North Carolina, United States | NC7 |  | | 2001 | DEVELOPED | 2001 | | 35.78900000, -78.67500000 | 146 | | Cultivar | Brazilian population PE1 (also known as BR51403 and PI 583911) was crossed to GEM line N16, a privately-owned inbred line of the non-stiff stalk heterotic group. Germplasms were developed by selfing and selecting variable F1s from tropical-source x US inbred crosses in North Carolina under standard nursery conditions, followed by a second selfing and selection season in Homestead, Florida (F2S1). 990 F2S1 progenies were tested for per-se yield in trials at the Sandhillls Research Station in North Carolina in 1996. The top ten percent were selected for further selfing and topcrossing in a winter nursery in Homestead, Florida. All procedures were carried out using ear-to-row methods, except that F2 seeds planted in Homestead were bulked by pedigree. Germplasms were selected on the basis of resistance to lodging, early flowering, synchrony of silk and pollen production, and reduced plant and ear height. This germplasm yields well in the southern US in topcrosses to stiff stalk testers compared to elite hybrid checks. The kernels are yellow, yellow cap in color and semiflint to semident in texture. Flowers within a few days of B73 in the South Atlantic region of the USA. | 1625385 | PI 639499 |
| 46 | PI 639500 | 'GEMN-0037' | Zea mays L. subsp. mays | North Carolina, United States | NC7 |  | Not Available | 2001 | DEVELOPED | 2001 | | 35.78900000, -78.67500000 | 146 | | Cultivar | Brazilian population PE1 (also known as BR51403 and PI 583911) was crossed to GEM line N16, a privately-owned inbred line of the non-stiff stalk heterotic group. Germplasms were developed by selfing and selecting variable F1s from tropical-source x US inbred crosses in North Carolina under standard nursery conditions, followed by a second selfing and selection season in Homestead, Florida (F2S1). 990 F2S1 progenies were tested for per-se yield in trials at the Sandhillls Research Station in North Carolina in 1996. The top ten percent were selected for further selfing and topcrossing in a winter nursery in Homestead, Florida. All procedures were carried out using ear-to-row methods, except that F2 seeds planted in Homestead were bulked by pedigree. Germplasms were selected on the basis of resistance to lodging, early flowering, synchrony of silk and pollen production, and reduced plant and ear height. . This germplasm yields well in the southern US in topcrosses to stiff stalk testers compared to elite hybrid checks. The kernels are orange-red in color and semident in texture. It has good per se grey leaf spot resistance. | 1625386 | PI 639500 |
| 47 | PI 639501 | 'GEMN-0039' | Zea mays L. subsp. mays | North Carolina, United States | NC7 |  | | 2001 | DEVELOPED | 2001 | | 35.78900000, -78.67500000 | 146 | | Cultivar | Brazilian population PE1 (also known as BR51403 and PI 583911) was crossed to GEM line N16, a privately-owned inbred line of the non-stiff stalk heterotic group. Germplasms were developed by selfing and selecting variable F1s from tropical-source x US inbred crosses in North Carolina under standard nursery conditions, followed by a second selfing and selection season in Homestead, Florida (F2S1). 990 F2S1 progenies were tested for per-se yield in trials at the Sandhillls Research Station in North Carolina in 1996. The top ten percent were selected for further selfing and topcrossing in a winter nursery in Homestead, Florida. All procedures were carried out using ear-to-row methods, except that F2 seeds planted in Homestead were bulked by pedigree. Germplasms were selected on the basis of resistance to lodging, early flowering, synchrony of silk and pollen production, and reduced plant and ear height. This germplasm yields well in the southern US in topcrosses to stiff stalk testers compared to elite hybrid checks. The kernels are yellow in color and semident in texture. Flowers within a few days of B73 in the South Atlantic region of the USA. | 1625388 | PI 639501 |
| 48 | PI 639502 | 'GEMN-0040' | Zea mays L. subsp. mays | North Carolina, United States | NC7 |  | | 2001 | DEVELOPED | 2001 | | 35.78900000, -78.67500000 | 146 | | Cultivar | Brazilian population PE1 (also known as BR51403 and PI 583911) was crossed to GEM line N16, a privately-owned inbred line of the non-stiff stalk heterotic group. Germplasms were developed by selfing and selecting variable F1s from tropical-source x US inbred crosses in North Carolina under standard nursery conditions, followed by a second selfing and selection season in Homestead, Florida (F2S1). 990 F2S1 progenies were tested for per-se yield in trials at the Sandhillls Research Station in North Carolina in 1996. The top ten percent were selected for further selfing and topcrossing in a winter nursery in Homestead, Florida. All procedures were carried out using ear-to-row methods, except that F2 seeds planted in Homestead were bulked by pedigree. Germplasms were selected on the basis of resistance to lodging, early flowering, synchrony of silk and pollen production, and reduced plant and ear height. This germplasm yields well in the southern US in topcrosses to stiff stalk testers compared to elite hybrid checks. The kernels are orange-red to yellow in color and semiflint to semident in texture. Flowers within a few days of B73 in the South Atlantic region of the USA. | 1625389 | PI 639502 |
| 49 | PI 639503 | 'GEMN-0041' | Zea mays L. subsp. mays | North Carolina, United States | NC7 |  | | 2001 | DEVELOPED | 2001 | | 35.78900000, -78.67500000 | 146 | | Cultivar | Brazilian population PE1 (also known as BR51403 and PI 583911) was crossed to GEM line N16, a privately-owned inbred line of the non-stiff stalk heterotic group. Germplasms were developed by selfing and selecting variable F1s from tropical-source x US inbred crosses in North Carolina under standard nursery conditions, followed by a second selfing and selection season in Homestead, Florida (F2S1). 990 F2S1 progenies were tested for per-se yield in trials at the Sandhillls Research Station in North Carolina in 1996. The top ten percent were selected for further selfing and topcrossing in a winter nursery in Homestead, Florida. All procedures were carried out using ear-to-row methods, except that F2 seeds planted in Homestead were bulked by pedigree. Germplasms were selected on the basis of resistance to lodging, early flowering, synchrony of silk and pollen production, and reduced plant and ear height. This germplasm yields well in the southern US in topcrosses to stiff stalk testers compared to elite hybrid checks. The kernels are yellow in color and semident in texture. | 1625390 | PI 639503 |
| 50 | PI 639504 | 'GEMN-0042' | Zea mays L. subsp. mays | North Carolina, United States | NC7 |  | | 2001 | DEVELOPED | 2001 | | 35.78900000, -78.67500000 | 146 | | Cultivar | Brazilian population PE1 (also known as BR51403 and PI 583911) was crossed to GEM line N16, a privately-owned inbred line of the non-stiff stalk heterotic group. Germplasms were developed by selfing and selecting variable F1s from tropical-source x US inbred crosses in North Carolina under standard nursery conditions, followed by a second selfing and selection season in Homestead, Florida (F2S1). 990 F2S1 progenies were tested for per-se yield in trials at the Sandhillls Research Station in North Carolina in 1996. The top ten percent were selected for further selfing and topcrossing in a winter nursery in Homestead, Florida. All procedures were carried out using ear-to-row methods, except that F2 seeds planted in Homestead were bulked by pedigree. Germplasms were selected on the basis of resistance to lodging, early flowering, synchrony of silk and pollen production, and reduced plant and ear height. This germplasm yields extremely well in the southern US in topcrosses to stiff stalk testers compared to elite hybrid checks. The kernels are yellow, yellow cap in color and semiflint to semident in texture. | 1625391 | PI 639504 |
| 51 | PI 639505 | 'GEMN-0043' | Zea mays L. subsp. mays | North Carolina, United States | NC7 |  | | 2001 | DEVELOPED | 2001 | | 35.78900000, -78.67500000 | 146 | | Cultivar | Brazilian population PE1 (also known as BR51403 and PI 583911) was crossed to GEM line N16, a privately-owned inbred line of the non-stiff stalk heterotic group. Germplasms were developed by selfing and selecting variable F1s from tropical-source x US inbred crosses in North Carolina under standard nursery conditions, followed by a second selfing and selection season in Homestead, Florida (F2S1). 990 F2S1 progenies were tested for per-se yield in trials at the Sandhillls Research Station in North Carolina in 1996. The top ten percent were selected for further selfing and topcrossing in a winter nursery in Homestead, Florida. All procedures were carried out using ear-to-row methods, except that F2 seeds planted in Homestead were bulked by pedigree. Germplasms were selected on the basis of resistance to lodging, early flowering, synchrony of silk and pollen production, and reduced plant and ear height. . This germplasm yields extremely well in the southern US in topcrosses to stiff stalk testers compared to elite hybrid checks. The kernels are yellow in color and semident in texture. | 1625392 | PI 639505 |
| 52 | PI 614142 | 'GEMS-0001' | Zea mays L. subsp. mays | Iowa, United States | NC7 |  | | 1999 | DEVELOPED | 06/21/1999 | | | | | Cultivar | Recurrent parent, B94, is an AES 800 maturity stiff-stalk synthetic inbred line, selected for high yield performance in single cross tests. Flowered 5 days later than B94 at Ames, IA in 1998, and 3 days later than B94 at Stoneville, MS in 1999. Donor parent, PI 503806, a tropical maize from Peru selected for resistance to leaf blade feeding damage caused by first generation European corn borer and leaf sheath and collar feeding damage caused by the second generation. Resistance for PI 503806 is not based on DIMBOA levels, a cyclic hydroxamic acid commonly associated with conventional leaf blade feeding resistance in maize. Breeding lines from the cross PI 503806 x B94 were advanced by backcrossing to B94 three generations. Throughout the breeding program, donor plants were selected by evaluating their resistance to European corn borer feeding on leaf blades, leaf sheaths, and collars of plants artificially infested with the insect. Only selected resistant plants were carried forward in the breeding effort. Third generation backcross seed were grown in Ames, IA in 1999 and plants were full sib-mated to obtain a seed increase for distribution. In addition to European corn borer resistance, also selected for superior yield compared to other experimental lines in the resistance breeding program. 160 second generation backcross parents from the breeding program were tested for yield. Three plants from each parent, including the parent of GEMS-0001, were selfed and crossed to a private non-stiff stalk tester, LH 185, and the hybrid seed was grown in a five location yield trial using U.S. Corn Belt locations. One parent hybrid of GEMS-0001 yielded well at 9756.1 kg/ha (155.6 bu/A) which was 95.3% of the highest yielding commercial check and 105.3% of the commercial check average. The other two parent hybrids of GEMS-0001 yielded 8941.0 kg/ha and 8727.8 kg/ha (142.6 and 139.2 bu/A). | 1574895 | PI 614142 |
| 53 | PI 550473 | 'B73' | Zea mays L. subsp. mays | Iowa, United States | NC7 |  | | 1972 | DEVELOPED | | | | | | Breeding material | Plant vigorous. Leaves erect. Pollen production average. Seed smooth dent. Maturity is AES800. This is the accession of B73 that was used for the first complete maize genome sequence. See https://maizegdb.org/assembly details. | 1445409 | PI 550473 |