Genetic variability parameters studies under normal and stress conditions of wheat (Triticum aestivum L.)

The experiment was conducted with fifty five wheat genotype during Rabi 2019-20 under normal sown (27 November 2019) and stress condition was created by delayed sowing the experimental material on 23 December 2019 at research field of AICRP on Wheat, BTCCARS, Bilaspur. Studies on genetic variability parameters for seed yield and ten yield attributing characters recorded lower values under stress conditions. Genotypic and phenotypic variances were higher under normal conditions for all the character studied. Genotypic and phenotypic coefficients are higher for biological and seed yield per plant and moderate for all the characters under study. High heritability was recorded for studied characters in both sowing conditions. Genetic advance as percent of mean were higher for all the character in two sowing conditions except moderate magnitude for 1000 seed weight. Moderate genetic advance were also recorded for days to 50% heading, seed length and seed width under stress conditions.