52. Estimates of heritability, genetic advance and correlation in F3populations of Wheat
Abstract
Development of new high yielding wheat varieties is the main objectives of the wheat improvement programs. Knowledge about the genetic variability, heritability, genetic advance and correlation analysis for various parameters is indispensable to propose effective wheat breeding. This Research was carried out at Malakander research farm The University of Agriculture Peshawar, Pakistan during cropping season 2014-15. Nineteen wheat genotypes including 7 parents and their 12 F3 segregating populations of wheat were evaluated in a RCB design replicated trice. Analyzed data revealed significant genotypic variability among the genotypes for the studied parameters. The main purpose of the study was to estimate heritability, genetic advance and correlation. High heritability value was observed for grains per spike (0.95), grain yield plant-1 (0.99), fertile tillers per plant (0.98), plant height (0.89), and leaf area (0.88). High genetic advance was observed for grain yield (14.16), flag leaf area (3.12) and grains per spike (2.49). Grains per spike and leaf area revealed significant and positive correlation with grain yield. Among the parents AUP (5008), JBZ and TATARA while, in segregating F3 wheat populations JBZ × WTN, JBZ × F. Sarhad, AUP (5008) × WTN were found better performing for yield and its contributing traits. Therefore these parental lines and F3 segregating populations could be used in future wheat improvement programs for economically important traits.
Keywords: Heritability; Genetic advance; Genotypes; Fertile tillers; Flag leaf area
