Abstract:
Factorial mating design was used to generate twenty-five hybrids from five male sterile (A- lines) and five male fertile (R-lines) parents. Ten parents and twenty five hybrids were evaluated in a Randomised Complete Block Design replicated 3 times. Analysis of variance showed significant differences between crosses (male x female interaction) for plant height, 1000 seed weight and grain yield. High heterotic value of 692.03% for grain yield was recorded. Hybrids that exhibited high heterotic value for grain yield, likewise has high heterotic value for yield components; panicle length, panicle weight, 1000 seed weight and number of seed per panicle. Narrow sense heritability was low for seedling vigour, days to 50% bloom plant height, panicle weight, number of seed/panicle and grain yield. Moderate heritability was obtained for panicle length and 1000 seed weight, thus preponderance of non-additive gene action for all traits studied. The best all round hybrids identified from this study are MA10xNR 71143, MA10xNR71146, MA10xNR71167 and 2219AxNR71167.
F.A. Showemimo , J.N. Buah , A.A. Addo-Quaye and E. Asare-Bediako , 2006. Nature of Inheritance and Genetic Components of Some Agronomic Traits in Sorghum. International Journal of Agricultural Research, 1: 503-508.
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