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Heterosis and combining ability studies in rice (Oryza sativa L.) using male sterile lines as testers


, : Heterosis and combining ability studies in rice (Oryza sativa L.) using male sterile lines as testers. Mysore Journal of Agricultural Sciences 1987; 20(4): 333

Grain yield per plant and 8 related characters were studied in 1982 in crosses of the cytoplasmically male-sterile lines KMS, KMS4 and KMS5 with 22 inbred lines. There was wide variation in F1 sterility. Heterosis and combining ability estimates indicated the importance of both additive and non-additive gene action in the control of the characters. Only 2 hybrids outyielded the best variety but many hybrids were heterotic for yield components.

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Related references

Koh, J.C., 1987: Studies on the combining ability and heterosis f 1 hybrids using cytoplasmic genetic male sterile lines of rice oryza sativa l. This study was performed to obtain the information on the magnitude of heterosis, estimate combining ability and to evaluate the gene pool for effective fertility-restoration lines. For this study nine lines, for cytoplasmic genetic male sterility...

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