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PJB-1974-14
A DIALLEL ANALYSIS OF YIELD ITS COMPONENTS IN GRAIN SORGHUM, SORGHUM VULGARE PERS. I. MANIFESTATIONS OF HYBRID VIGOUR.
Abstract
A complete 6 – 6 diallel cross was studied during 1967 and 1968 to measure heterosis for seven agronomics characters viz. yield number of seats per head , number of heads per plot , plant height, days to 50% bloom and threshing percentage. Heterosis was found to be highly significant for all the seven characters, although the effect for grain yield was highly pronounced. Heterosis was striking in cases of crosses involving distinctly related parents. The increase in grain production due to heterosis came largely from more number of seeds per head, whereas 1000-seed weight and number of heads per plot showed little effect on yield.
