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. 2016 Mar 28;11(3):e0151532. doi: 10.1371/journal.pone.0151532

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;