Partial Diallel Analysis For Combining Ability in Wheat

Fifteen genotypes were crossed in a partial diallel fashion. Combining ability analysis.for seven characters in two environments showed that mean squares due to general combining ability (gca) and specific combining ability (sea) were significant, the former being larger in magnitude than the latter in both environments. However, gca/sca σ²g/σ²s the ratio was higher for days to heading, plant height, number of grains/ear and 1000-grain weight. The parents HD 2009 and WH 147 far total biomass, number of grains/ear and grain yield; Raj 821 and Sonalika for early flowering, shorter height and 1000-grain weight; hd 2122 for days to heading and plant height; P 1200 for days to heading and 1000-griin weight: and Kharchia-65 for tiller number and total biomass were good general combiners.