Four of the QTL from PI 181410 and one from AvS were potentially new. Two QTL with minor effects on stripe rust response were identified from AvS and mapped to 2BS and 2BL. Four QTL, QYrPI181410.wgp-1BL, QYrPI181410.wgp-4BL, QYrPI181410.wgp-5AS, and QYrPI181410.wgp-5BL.2, were identified from PI 181410 for HTAP resistance and mapped to 1BL, 4BL, 5AS, and 5BL, respectively. Three QTL, QYrPI181410.wgp-4AS, QYrPI181410.wgp-4BL, and QYrPI181410.wgp-5BL.1, from PI 181410 for all-stage resistance, were mapped on chromosome arms 4AS, 4BL, and 5BL, respectively.
The F 7 population was genotyped using the 90K wheat SNP chip. The F 5–F 8 populations were consecutively phenotyped for stripe rust response in multiple field environments under natural Pst infection, and the F 7 population was phenotyped in seedlings at low temperature and in adult-plant stage with selected Pst races in the greenhouse. To map quantitative trait loci (QTL) for the resistance in PI 181410, it was crossed with Avocet S (AvS), from which a recombinant inbred line population was developed. The present study characterized the landrace to have both race-specific all-stage resistance and nonrace-specific high-temperature adult-plant (HTAP) resistance. Spring wheat landrace PI 181410 has shown high level resistance to stripe rust. Genetic resistance is the best strategy for control of the disease. tritici ( Pst), is one of the most destructive diseases of wheat in the world. Stripe rust, caused by Puccinia striiformis f.