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| ACCESSION | PLANT NAME | TAXONOMY | ORIGIN | GENEBANK | IMAGE | AVAILABILITY | RECEIVED | SOURCE TYPE | SOURCE DATE | COLLECTION SITE | COORDINATES | ELEVATION | HABITAT | IMPROVEMENT LEVEL | NARRATIVE | | |
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| 0 | PI 606768 | SD40 | Zea mays L. subsp. mays | South Dakota, United States | NC7 |  | | 1991 | DEVELOPED | 03/1985 | | | | | Breeding material | Yellow dent inbred line. This line was evaluated for agronomic performance and in hybrid combination for yield and moisture. Released because of its potential to produce competitive hybrids for central and southern South Dakota. Derived by selfing for eight generations with selection for desirable plant, ear, and root traits. Evaluated for 3 years at Brookings and would be considered intermediate to late flowering because it silked 2 days after A632, 4 days after A619, 11 days after CM105, and 15 days after A654. Plants approximately 120 cm tall with ear placement approximately 75 cm above the ground. Light green with narrow and distinctly upright leaves, small tassels, and red cobs. Ear length about 15 cm and ears are borne on 7.5 cm shanks. 12 to 14 rows of medium size kernels on each cob. Seed moisture content about 20%, 60 days after pollination. Good vigor, ear fill, stalk strength, and stay green. Acceptable husk looseness and roots. Good combining ability with both A619 and A632, producing a 4 year average of 8.34 Mg/ha with A619 and 7.89 Mg/ha with A632 compared to 8.36 Mg/ha for Pioneer 3901 when tested at Brookings. Corn borer (Ostrinia nubilalis) resistance ratings on a 1 to 9 scale, averaged 3.00 in trials conducted in 1984-1985. Good resistance to northern corn leaf blight (Exserohilum turcicum), and acceptable resistance to stalk rot (Diplodia maydis). | 1071153 | PI 606768 |
| 1 | PI 606769 | SD41 | Zea mays L. subsp. mays | South Dakota, United States | NC7 |  | | 1991 | DEVELOPED | 03/1985 | | | | | Breeding material | Yellow dent inbred line. Evaluated for agronomic performance and in hybrid combination for yield and moisture. Released because of its potential to produce competitive hybrids for central and southern South Dakota. Derived by selfing for eight generations with selection for desirable plant, ear, and root traits. At Brookings, intermediate to late flowering because it silked 1 day before A632, 1 day after A619, 8 days after CM105, and 12 days after A654(AES 500). Plants approximately 150 cm tall with ear placement 60-70 cm above the ground. Narrow, dark green leaves, small tassels, and a red cob. Ear length is about 16.5 cm and ears are borne on 11 cm shanks. 18 rows of medium-small kernels. Seed moisture content about 20%, 60 days after pollination. Very good vigor and ear fill. Good stalk strength and husk looseness. Acceptable stay green and roots. Good combining ability with A632 producing a 4 year average of 7.90 Mg/ha compared to 8.36 Mg/ha for Pioneer 3901 when tested at Brookings. Corn borer (Ostrinia nubilalis) resistance ratings on a 1 to 9 scale, averaged 3.5 in trials conducted in 1984-85. Good resistance to northern corn leaf blight (Exerhilum turcicum), and good resistance to stalk rot (Diplodia maydis). | 1071160 | PI 606769 |