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- W2373192270 abstract "Combining ability and heterosis was studied in 7 × 7 diallel cross in quality protein maize for kernel yield plant , number of kernels ear , 1000-kernel weight, lysine and tryptophan. Variance due to GCA and SCA 1 1 were highly significant, indicating both additive and non-additive types of gene action are important for controlling the traits. Predominance of non-additive gene action was observed for all the quantitative and qualitative traits. Standard heterosis ranged from -14.26 to 6.35% for kernel yield and other two yield components from -26.77 to 7.21% and -16.71 to 1.53% for kernel number and weight, respectively. Fot quality traits, heterosis varied from -7.34 to 15.60% and -8.77 to 14.47% for lysine and tryptophan content. Average heterosis for yield and other two components were negative value, but it showed positive values for both the quality traits. In general kernel yield decreased when quality of the crosses increases and vice versa.. Parent P was the best combiner for kernel yield coupled with both the yield component kernel number and weight. For 1 quality traits, P was the best combiner showing significant positive gca effect both for lysine and tryptophan. 5 The parent P was also a good combiner for kernel yield and quality trait lysine. Additive × additive, additive 2 × dominance and dominance × dominance gene interactions were involved in deriving good specific crosses for different traits. The cross combinations P × P and P × P simultaneously possessed significant desirable 2 4 3 5 sca effects and high heterosis both for kernel yield, yield components and quality traits might be used for obtaining high yielding quality hybrids." @default.
- W2373192270 created "2016-06-24" @default.
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- W2373192270 date "2011-01-01" @default.
- W2373192270 modified "2023-09-27" @default.
- W2373192270 title "Heterosis and Combining Ability of CIMMYT's Tropical × Subtropical Quality Protein Maize Germplasm" @default.
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