Heritability estimates and traits association in wheat advanced lines

Abstract

Development of superior genotypes is the main aim all breeding programs. For this purpose comprising 14 spring wheat advanced lines with four checks were evaluated for six yield parameters during 2011-12 in an RCB design with three replications. Analysis of variance revealed highly significant differences (P?0.01) for all the studied traits except harvest index which showed significant differences (P?0.05). Mean values ranged between 87.7 to 110.4 cm for plant height, 29.1 to 38.1 cm for peduncle length, 1.91 to 2.89 g for grain weight spike^-1, 5617.3 to 7197.5 kg for grain yield ha^-1, 15679 to 20123 kg for biological yield ha^-1 and 34.94 to 42.40% for harvest index. Grain yield has significant correlation with grain weight spike^-1 (0.407**), biological yield (0.486**) and harvest index (0.549**). High heritability was observed for grain weight spike^-1 (71.74%), grain yield ha^-1 (69.01%) and biological yield ha^-1 (71.87%).