Marker-assisted backcross breeding for heat tolerance in bread wheat (Triticum aestivum L.).

ABSTRACT: Manipulation of flowering time for adaptation through natural or genetic approaches may combat heat-stress damage that occurs at the reproductive stages in production conditions. HD2733, a popular wheat variety of the eastern plains of India, is largely sensitive to heat stress. Therefore, the current study aims to improve heat tolerance of HD2733 by introgression of QTLs associated with early anthesis and high kernel weight linked to markers Xbarc186 and Xgwm190, respectively, through marker-assisted backcross breeding (MABB) from a tolerant donor, WH730. A total of 124 simple sequence repeat (SSR) markers distributed evenly across the genome were used for the background selection. The alleles of Xbarc186 and Xgwm190 were fixed in BC₂F₁ an

SUBMITTER: Bellundagi A 

PROVIDER: S-EPMC9785257 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature