Indian Journal of Genetics and Plant Breeding (The)
Year : 1981, Volume : 41, Issue : 1
First page : ( 167) Last page : ( 169)
Print ISSN : 0019-5200. Online ISSN : 0975-6906.

Stem borer resistance in sorghum

Kulkarni Narendra, Murty K. N.

Andhra Pradesh Agricultural University, Rajendranagar, Hyderabad, 500 030, India

Summary

The nature of gene action for stem borer resistance was studied in F₂ and F₃ of a six variety diallel cross. Significant general and specific combining ability variances in F₂ and F₃, indicated that both additive and nonadditive components influence stem borer resistance. However, the higher magnitude of GCA in F₃ indicated that stem borer resistance is predominantly governed by additive and additive × additive components of genetic variance. ‘IS 4664’, ‘CSV-3’ and ‘SR-18’ were good combiners. The GCA effects indicated that atleast one parent should be a good combiner in breeding for stem borer resistance.

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