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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 | | |
|---|
| 0 | PI 633727 | Tx202 | Zea mays L. subsp. mays | Texas, United States | NC7 |  | | 2003 | DEVELOPED | | | | | | Breeding material | Strong early vigor, upright leaves, semi-dent white kernels, and red cobs. Ears usually have 10 to 12 rows of kernels. Flowers 10 days later than B73 and requires 1063 heat units from planting to flower in Lubbock, Texas. Average plant height and above-average ear heights. Long, dark-green leaf blades. Kernels relatively small. Certain degree of photoperiod sensitivity since this line comes from 50% tropical background. Tolerant to Banks grass mite (Oligonychus pratensis) and two-spotted spider mite (Tetranychus urticae) feeding damage. Resistant to high temperature. Over several years, high temperatures caused leaf firing and tassel blasting in many inbred lines in the summer nurseries in Lubbock, TX, but not in this line. Also has good drought tolerance. Better plant appearance rating under severe drought stress, showed better plant recovery when pre-tassel drought stress was relieved, and had better stay green rating. In replicated trials with inoculation of aflatoxin-producing A. flavus at Corpus Christi, TX, the hybrid CML343 x Tx202 showed consistently low aflatoxin contamination in 2000-2002. The aflatoxin level ranged from 120 to 207 ppb over the 3 yrs., which was 69% to 92% lower than the check Pioneer hybrid 31B13 (Xu and Odvody, 2002). This line can be used as germplasm for improving stress tolerance. | 1647032 | PI 633727 |