| 0 | PI 648423 | 58611 Inbred A632 | Zea mays L. subsp. mays | Minnesota, United States | NC7 |  | | 2007 | DEVELOPED | 2007 | | | | | Breeding material | Maize is an important food crop, especially in many developing countries. In the U.S., maize is the primary energy-supplying grain for animal feed. However, it is often an inadequate source of protein due to deficiencies in essential amino acids such as lysine, methionine, and tryptophan. Methionine is a particularly important amino acid in poultry nutrition; of the maize used for animal feed, 20% is fed to poultry. In the U.S., more than '200 million in synthetic methionine supplements are added to poultry rations annually. USDA may prohibit synthetic methionine-supplemented feed for organic egg production after October, 2008. Thus, the lines hereby available may be even more highly valued. Lines with elevated methionine in A632, B73 and Mo17 backgrounds were developed through a backcrossing program initiated in 1990 at the Minnesota Agricultural Experiment Station in St. Paul, Minnesota. These lines have 11%, 22% and 50% increases in methionine relative to inbreds A632, B73 and Mo17 respectively. Statistical analyses of the NIRS (Near Infrared Reflectance Spectrometry) data using the Tukey and Dunnett tests were performed using the GLM procedures, a function of SAS. Methionine levels in both backgrounds are significant at the 0.05 level compared to their corresponding inbreds. Methionine levels were measured using NIRS and HPLC procedures at the University of Minnesota. A Foss North America (Model 6500) NIRS instrument was used to efficiently screen genotypes. A NIRS equation was developed for predicting methionine levels of ground-kernels. On an individual sample basis, the correlation between NIRS-predicted methionine level and HPLC-measured methionine was 0.79. The correlation between genotype means of NIRS-predicted methionine and genotype means of HPLC-measured methonine was 0.91. Elevated whole-kernel methionine levels improve the protein and nutritional quality of the maize grain. | 1729918 | PI 648423 |
| 1 | PI 566674 | W.S.T. 92-1 | Zea mays L. subsp. mexicana (Schrad.) H. H. Iltis | Durango, Mexico | NC7 |  | Not Available | 1993 | COLLECTED | 11/13/1992 | Along cement lined irrigation canals over railroad bridge, about 20km from Durango on road to Zacatecas, Puente Gavilanes | 24.01666667, -104.48333333 | 1950 | | Wild material | Race Central Plateau. Associated with maize Celaya. Balanced Regeneration Pack - 646 field counted plants at 3 to 5 seeds/plant | 1461645 | PI 566674 |
| 2 | PI 566677 | W.S.T. 92-3 | Zea mays L. subsp. mexicana (Schrad.) H. H. Iltis | Michoacán de Ocampo, Mexico | NC7 |  | | 1993 | COLLECTED | 11/18/1992 | Heavy black soil, in unweeded sorghum field, Penjamillo | 20.16666667, -101.86666667 | 1750 | | Wild material | Race Central Plateau. Hybrid swarm. Associated with hybrid corn and sorghum. 2nd/and 3rd backcrosses. Owner Sr. G. Hernandez-Garnica, Rancho El Tejocote. Balanced Regeneration Pack - 750 field counted plants at 10 seeds/plant | 1461648 | PI 566677 |
| 3 | PI 566680 | W.S.T. 92-5 | Zea mays L. subsp. mexicana (Schrad.) H. H. Iltis | Guanajuato, Mexico | NC7 |  | Not Available | 1993 | COLLECTED | 11/18/1992 | Maize field on south facing slope of hill above Uriangato, road Morelia to Celaya | 20.13333333, -101.10000000 | 1775 | | Wild material | Race Central Plateau. Associated with maize Celaya/Conico Norteno. Balanced Regeneration Pack - 325 field counted plants at 10 seeds/plant | 1461651 | PI 566680 |
| 4 | PI 587140 | 'A632' | Zea mays L. subsp. mays | Minnesota, United States | NC7 |  | | 1992 | DEVELOPED | | | | | | Breeding material | | 1082752 | PI 587140 |
| 5 | PI 587147 | 'Pa91' | Zea mays L. subsp. mays | Pennsylvania, United States | NC7 |  | | 1992 | DEVELOPED | | | | | | Breeding material | | 1082778 | PI 587147 |
| 6 | PI 601170 | 'LH82' | Zea mays L. subsp. mays | Iowa, United States | NC7 |  | | 1985 | DEVELOPED | 1984 | | | | | Cultivar | Dent corn best adapted to most regions of the United States. Maturity of 73 days from emergence to 50% of plants in silk (1428 heat units). Plant is 176 cm in height to tassel tip, 76 cm ear height to base of top ear, 13 cm length of top ear internode, no tillers, strong two-ear tendency per stalk, and normal cytoplasm. Leaf 5GY 4/6 (Munsell Color Charts for Plant Tissues), less than 30 degrees angle from stalk (upper half), light sheath pubescence, few marginal waves, few longitudinal creases, 11 cm at widest point of ear node leaf and 73 cm long, and 11 leaves per mature plant. Tassel has 8 lateral branches, branch angle is less than 30 degrees from central spike, penduncle length is 0 cm from top leaf to basal branches, medium pollen shed, pink anther, and glume green with brown margin. Ear 14 cm long, 40 mm mid-point diameter, 116 grams, kernel rows distinct and 22 in number, silk color green, husk color light green when fresh and buff when dry, medium husk extension (barely covering ear) at harvest stage, husk leaf short (<8 cm), shank 14 cm long, 7 internodes, upright position at dry husk stage, slight taper, and average drying time. Kernel (from ear mid-point) 11 mm long, 7 mm wide, and 3 mm thick, shape grade 20-40, pericarp colorless, aleurone homozygous and white, endosperm yellow with normal starch, and 20 grams in weight per 100 seeds. Cob 27 mm in diameter at mid-point, strong, and red. Most closely resembles A632Ht for maturity, W153R for plant type, Wf9 for ear type, and LH39 for usage. | 1165596 | PI 601170 |
| 7 | PI 601005 | PH207 | Zea mays L. subsp. mays | Indiana, United States | NC7 |  | | 1983 | DEVELOPED | 1983 | Tipton, Indiana, USA. | | | | Cultivar | | 1157406 | PI 601005 |
| 8 | 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 |
| 9 | PI 558532 | 'Mo17' | Zea mays L. subsp. mays | Missouri, United States | NC7 |  | | 1964 | DEVELOPED | | | | | | Breeding material | Endosperm yellow. Cob red. Relative maturity similar to C103 with better kernel type than C103. Easier to maintain in Missouri than C103. Resistance to leaf blight (Helminthosporium turcicum) and stalk quality similar to C103. Pollinates itself readily under semi-drought conditions. Maturity AES800. | 1453504 | PI 558532 |
| 10 | Ames 21786 | I.A. 2 | Zea mays L. subsp. parviglumis H. H. Iltis & Doebley | Guerrero, Mexico | NC7 | | | 1992 | COLLECTED | 1967 | El Salada. | | | | Wild material | Requires one year for germination. | 1087168 | Ames 21786 |
| 11 | Ames 21789 | I.A. 8 | Zea mays L. subsp. parviglumis H. H. Iltis & Doebley | Guerrero, Mexico | NC7 | | | 1992 | COLLECTED | 1973 | Mazatlan. | | | | Wild material | | 1087171 | Ames 21789 |
| 12 | Ames 21809 | I.A. 29 | Zea mays L. subsp. parviglumis H. H. Iltis & Doebley | Guerrero, Mexico | NC7 | | Not Available | 1992 | COLLECTED | 11/23/1971 | 1 mile south of Palo Blanco. | 17.43333333, -99.46666667 | | | Wild material | Small. | 1087195 | Ames 21809 |