Study of Combining Ability in Diallel Crosses of Maize (Zea Mays L.) for Grain Yield and Quality Traits
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- GCA, Grain, Protein, SCA, Significant
- Gosai, M. A.; Kuchhadiya, G. V.; Brahmbhatt, B. N.; Bhalala, K. N.
- The twenty one maize hybrids generated from 7 x 7 half-diallel cross were evaluated with their parents and two standard hybrid checks viz., HQPM 1 and Ganga safed 2. The analysis of variance for combining ability revealed importance of both additive and non-additive genetic variance with prime importance of non-additive genetic variance for inheritance of all the characters except 100 kernel weight and grain yield. The estimates of gca effect revealed that parents PFSR R2-4, GYL 12, GYL 7 and LM 6 were observed to be good general combiners for grain yield. Moreover for protein and starch content, parents GYL 7 and GYL 12 observed to be good general combiners. Among all the crosses, GYL 12 x PFSR 15016-1, GYL 12 x PFSR S3-4 and PFSR S3-5 x GYL 7 were identified as outstanding for grain yield. The cross GYL 12 x PFSR 15016-1 considered the best cross as that recorded significant and desired sca effect for the traits ear length, ear girth, number of grains per row, 100 kernel weight and starch content in the seed. While, the cross PFSR 15016-1 x GYL 7 exerted highest significant sca in the desirable direction for protein content. Hence, this cross could be used in future breeding programme.
Full text: IJRAS_535_FINAL.pdf