Genetic resources for enhancing drought tolerance from a mini-core collection of spring bread wheat (Triticum aestivum L.)

An enhanced level of drought tolerance in wheat (Triticum spp.) may be reached through combining agronomic and physiological traits associated with grain yield under conditions. We aimed to explore valuable diversity for the tolerance, existed core collection Iranian spring bread landraces. A number 206 accessions along check cultivar were assessed yield, drought-adaptive traits, estimated criteria during 2016-17 2017-18 growing seasons. Analysis data using best linear unbiased predictions (BLUPs) approach revealed that genotype x environment (GE) interactions accounted highest variation (36.23%) followed by 1000-kernel weight (35.39%), heading date (21.4%), days maturity (16.38%), plant height (5.83%). Using hierarchical cluster analysis developed pattern heat map based on values resistance indices, clustered into nine groups different sets characteristics. Several high potential, early heading, optimal stature identified. Three selection stress index (STI), geometric mean productivity (GMP) (MP) more effective identifying producing higher both irrigated The superior identified this study explored further breeding new cultivars tolerance.