2001•Unpublished venueRequires access

A Preliminary Study on Genetic Effect of Maize Yield Component Traits Based on Major Gene and Polygene Mixed Inheritance

Dao P. Xiang

Abstract

Genetic effects of maize yield component traits were studied by using four populations P 1,P 2,F 1 and F 2∶3 based on major gene and polygene mixed model.The results showed that ear length,ear diameter,ear weight and grain yield/plant were controlled by polygenes.Some major genes controlling kernel number,kernel weight,row number and bare tip length were found.Epistatic interaction between two major genes controlling row number was also detected.It was supposed that characters controlled by major gene and polygene model having lower heritabilities was due to dominant effect.Breeding strategies for yield component traits were discussed.

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Key concepts: Polygene, Major gene, Biology, Epistasis, Heritability, Inheritance (genetic algorithm), Yield (engineering), Component (thermodynamics)