Estimation of Heritability and Genetic Variability in Hexaploid Wheat (Triticum aestivum L.)

Abstract

The field experiment was carried out during Rabi season in 2019-20, 2020-21 at Mata Gujri College, Fatehgarh Sahib’s Experimental Farm,
Department of Agriculture. Experimental materials comprising 15 F1s using half diallel mating design involving six parents were grown
in randomized block design. High heritability estimates involving broad sense along with high genetic advance as a percent of mean
was observed for number of grain plant-1, harvest index (%), plant height (cm) and grain yield plant-1 (g). The high genotype coefficient
of variation (GCV) and phenotype coefficient of variation (PCV) were observed for grain yield/plant and test weight whereas, moderate
values for PCV and GCV was recorded for no. of spikelets spike-1, no. of grain spike-1, and spike length (cm) indicating prevalence of
genetic variability, which can successfully be used for improvement of seed yield genetically in wheat.