Wheat is self-pollinated annual temperate crop extensively grown as staple food in the world. Thirteen genetically diverse heat tolerance wheat varieties , DBW90, UP2843, WH1124, HPW211, WH1021, CBW12, MASC6272, JOB666, HD2329, WAXWING, HD2891, HD2961, and three tester HD2967, WH1105, HD3059 was crossed in line x tester mating design excluding reciprocals. | Genetic dissection of wheat genotypes using morpho-physiological traits for terminal heat tolerance