Diallel Analysis for some Agronomic Traits in Rice (Oryza sativa L.)
Combining ability, heterosis and gene action
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Plant breeders are always on a hunt for appraising the nature of rice varieties when put in cross combination so that they can have useful plant types in segregating generations following hybridization. This could best be accomplished when one knows the combining ability (both general and specific), heterotic effect, and type of gene action of the parents for different traits. In this study, 10 rice varieties were crossed in a diallel fashion (excluding reciprocals). The data for the parents and 45 crosses were statistically analyzed and good general and specific combiners were sorted out. The...
Plant breeders are always on a hunt for appraising the nature of rice varieties when put in cross combination so that they can have useful plant types in segregating generations following hybridization. This could best be accomplished when one knows the combining ability (both general and specific), heterotic effect, and type of gene action of the parents for different traits. In this study, 10 rice varieties were crossed in a diallel fashion (excluding reciprocals). The data for the parents and 45 crosses were statistically analyzed and good general and specific combiners were sorted out. The analysis of heterosis showed which parents produced heterotic hybrids. The type of gene action for the parents is discussed separately.
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