Drought-Tolerance QTLs Associated with Grain Yield and Related Traits in Spring Bread Wheat.

ABSTRACT: The present research aims to identify the efficient combination of drought-tolerance selection criteria and associated quantitative trait loci. A panel of 197 bread wheat genotypes was evaluated for yield- and drought-tolerance-related traits in two environments (favorable and semiarid) for 2 years (2015-2016). Grain number, biomass, number of fertile spikes per plant and ground cover exhibited a significant correlation with grain yield and constitute potential secondary selection criteria for yield under drought conditions. About 73 significant marker-trait associations were detected along various chromosomal positions. The markers "wsnp_Ex_Rep_c67786_66472676" and "ExcalibuR_c24593_1217" exhibited important genetic gains associated with yield increase under drought (11 and 7%, respective

SUBMITTER: Bennani S 

PROVIDER: S-EPMC9002858 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature