| 0 | PI 638553 | DE5 | Zea mays L. subsp. mays | Delaware, United States | NC7 |  | | 2005 | DEVELOPED | 04/2002 | | | | | Breeding material | A vigorous silker with good flowering synchrony.Sheds pollen two days later and silks about a half day later than B73Ht. Is taller than B73Ht in plant height but similar in ear placement. Has ears with 18 kernel rows and red cob color, and has excellent grain quality. Has high leaf feeding resistance and intermediate resistance to second-generation European corn borer . It is susceptible to gray leaf spot . Has good yield in hybrid performance with non-Stiff Stalk testers. | 1671774 | PI 638553 |
| 1 | PI 634206 | Mo48 | Zea mays L. subsp. mays | Missouri, United States | NC7 |  | | 2003 | DEVELOPED | | | | | | Breeding material | Dark green, medium-wide leaf blades angled open at about 60 degrees. Cob white, anthers yellow, trace color on the glumes and no glume bar. Has 19 to 21 tassel branches with a 23 cm spike. Has few tillers and floral synchrony is good. In 1999, at least as resistant to European Corn Borer as the resistant checks in replicated trials in MO, NE, IA, and MS. In 2002, tested for reaction to ECB2 damage in three replication in 10 tests in MO, MS, NE, IA,IL, OH, and DE for a total of 11 ECB1 locations evalued and 10 for ECB2. Mo48, Mo49, B73, Mo17, Mo47 (resistant check) and DE811 (resistant check) had 13.1, 10.9, 35.4, 28.2, 11.2, and 22.6 cm of stalk tunneling, respectively. This line responded better for yield on Mo17 tester (two yrs. and five MO trials-18 replications total) and its hybrids are more resistant to ECB2 damage than B73/Mo17 (5.7 cm and 4.1 cm vs. 8.4 cm, respectively). | 1649989 | PI 634206 |
| 2 | PI 634207 | Mo49 | Zea mays L. subsp. mays | Missouri, United States | NC7 |  | | 2003 | DEVELOPED | | | | | | Breeding material | Medium green leaves possibly with a lesion mimic syndrome. Leaves medium in width and angled upright at about 30 degrees. Cob white, anthers purple, glumes striped and there is a glume bar. Has 5 to 11 tassel branches with a 30.5 cm spike. Sometimes produces a few tillers and silking is slighly delayed. In 1999, at least as resistant to European Corn Borer as the resistant checks in replicated trials in MO, NE, IA, and MS. in 2003, tested for reaction to ECB2 damage in three replication in 10 tests in MO, MS, NE, IA, IL, OH, and DE for a total of 11 ECB1 locations evaluated and 10 for ECB2. Mo48, Mo49, B73, Mo17, Mo47 (resistant check) and DE811 (resistant check) had 13.1, 10.9, 35.4, 28.2, 11.2, and 22.6 cm of stalk tunneling, respectively. Responded better for yield on a Mo17 tester (two yrs. and five Missouri trials-18 replications total) and its hybrids are more resistant to ECB2 damage than B73/Mo17 (5.7 cm and 4.1 cm vs. 8.4 cm, respectively). | 1649990 | PI 634207 |
| 3 | 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 |
| 4 | PI 583351 | Mo46 | Zea mays L. subsp. mays | Missouri, United States | NC7 |  | | 1994 | DEVELOPED | 06/16/1994 | | | | | Breeding material | Resistance to European corn borer (Ostrinia nubilalis). Plant height ranges from 170 to 180cm. Yield ranges from 6.4 to 11.3 t ha-1. For comparison, yield of commercial hybrid check ranged from 9.0 to 12.9 t ha-1 | 1478322 | PI 583351 |
| 5 | PI 583352 | Mo47 | Zea mays L. subsp. mays | Missouri, United States | NC7 |  | | 1994 | DEVELOPED | 06/16/1994 | | | | | Breeding material | Resistance to European corn borer (Ostrinia nubilalis). Plant height ranges from 110 to 120cm. Yield ranges from 7.5 to 9.8 t ha-1. For comparison, yield of hybrid check ranged from 9.0 to 12.9 t ha-1 | 1478323 | PI 583352 |
| 6 | PI 550558 | DE811 | Zea mays L. subsp. mays | Delaware, United States | NC7 |  | | 1985 | DEVELOPED | PRE 01/1985 | | | | | Breeding material | Yellow dent inbred. Leaves upright. Pollen production good. Yield average. Silks purple. Cob red. Yellow-brown kernels. Maturity is AES700-800. Resistant to southern corn leaf blight (Cochliobolus heterostrophus) and both generations of European corn borer (Ostrinia nubilalis). | 1445494 | PI 550558 |
| 7 | 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 |
| 8 | 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 |