Table 4. Means (±SED) of QTL lines developed through marker-assisted breeding for high grain yield under drought.
QTL | Entry | Stress 1 | Stress 2 | Non-stress | ||||||
---|---|---|---|---|---|---|---|---|---|---|
DTF | PHT | GY | DTF | PHT | GY | DTF | PHT | GY | ||
qDTY3.1 | IR88287-524-1-B-B | 108± 4* | 61± 4* | 1511± 360* | 104± 1* | 64± 3* | 772± 202* | 102± 4* | 81± 4* | 5358± 873NS |
qDTY3.1 | IR88287-63-1-B-B | 104± 4* | 62± 4* | 1654± 360* | 100± 1* | 66± 3* | 1018± 202* | 96± 4* | 73± 4* | 4334± 873NS |
Swarna | 109± 4* | 62± 4* | 340± 360* | 109± 1* | 62± 3* | 385± 202* | 103± 4* | 82± 4* | 4121± 873NS | |
qDTY12.1 | IR84984-83-15-332-B | 66± 3* | 76± 4* | 691± 175* | 70± 3* | 70± 4* | 348± 73* | 57± 1.4* | 126± 4.6NS | 3747± 744* |
qDTY12.1 | IR84984-83-15-817-B | 64± 3* | 71± 4* | 322± 175* | 72± 3* | 61± 4* | 212± 73* | 56± 1.4* | 118± 4.6NS | 4130± 744* |
Vandana | 69± 3* | 66± 4* | 154± 175* | 70± 3* | 64± 4* | 72± 73* | 54± 1.4* | 120± 4.6NS | 3556± 744* | |
qDTY1.1 | IR91659:41-59-B | 100± 3* | 70± 5NS | 2475± 645* | 89± 3* | 63± 3* | 386± 28* | 89± 11NS | 97± 6NS | 4428± 113NS |
qDTY1.1 | IR91659:54-17-B | 93± 3* | 75± 5NS | 2440± 645* | 90± 3* | 71± 3* | 383± 28* | 82± 11NS | 98± 6NS | 4222± 113NS |
Swarna | 98± 3* | 75± 5NS | 553± 645* | N | N | 0 | 101± 11NS | 91± 6NS | 4778± 113NS |
Stress 1 and Stress 2 correspond to the two different experiments. qDTY3.1 lines were screened in two different seasons whereas qDTY1.1 and qDTY12.1 lines were screened in only one season. qDTY1.1 lines were screened in two different environments (stress 1 = field conditions and stress 2 = rainout shelter). qDTY12.1 lines were screened on two different dates at the same location (stress 1 = first date and stress 2 = second date). Improved genotypes can be compared with their respective parents for each QTL (qDTY3.1, qDTY12.1 and qDTY1.1). DTF: days; PHT: cm, GY: kg ha–1. N: Swarna did not flower under a rainout shelter (severe stress).
*: Significance at 1%;
NS: Non-significant difference;