ESTIMATION OF HERITABILITY FOR SOME AGRONOMIC TRAITS IN WHEAT (TRITICUM AESTIVUM L)

Abstract

F₂ populations of six cross combinations  DN-52 Lasani-08, DN-52 Iqbal-2000, DN-52 9432, Fareed-06 Lasani-08, Fareed-06 Iqbal-2000 and Fareed-06 9432 involving five varieties / lines were studied to determine the broad-sense heritability and genetic advance  for  plant height, spike length, number of tillers per plant, flag leaf area, 1000-grain weight and grain yield per plant. The broad-sense heritability estimates ranged from 42.43-86.47,20.36-57.04,31.34-77.53,32.63-82.66,14.88-74.24 and 17.71-65.54 respectively. The genetic advance estimates for spike length , number of spikelets per spike , flag leaf area ranged from 0.41- 1.23, 0.64-2.42, 1.13-4.04 respectively. While the genetic advance for traits plant height,1000 - grain weight and grain yield per plant ranged  2.33-6.32,0.30-2.72 and 0.56-2.68 respectively. The cross Fareed-06 Lasani-2008, DN-52 9432 and parental genotypes must be give due consideration in breeding program.