COMBINING ABILITY ANALYSIS IN WHEAT

A 4 x 4 diallel cross of wheat were evaluated for combining ability at Wheat Research Institute, Faisalabad during 2004-05. Data were recorded from F, generation for plant height, number of tillers plant", biomass plant", 1000:: grain weight, harvest index, number of grains spike" and grain yield plant". The additive gene effects were operating in plant height, biomass plant", number of grains spike" and grain yield plant' while number of tillers plant" and 1000-grain weight were controlled by non-additive gene effects. The genotypes of "Uqab 2000" proved to be good general combiner for grain yield, 1000-grain weight, biomass plant", number of tillers plant" and plant height. While V-00055 was found good general combiner for grain yield, biomass plant", plant height and number of grains spike". The cross "SH-02 x Uqab 2000" and its reciprocal and "V-00125 x V-00055" were the best specific combiners for grain yield plant" and yield components.