2012•Zhiwu yichuan ziyuan xuebaoRequires access

Genetic Analysis of Ear-related Traits in Maize by Using Joint Analysis of Multiple Generations

XU De-lin

Abstract

Traits related to maize ear are very important yield component traits.In this paper,inheritance of 6 ear-related traits was analyzed by the joint segregation analysis of a mixed genetic model of major gene plus polygene in six generations(P1,P2,F1,B1,B2,and F2) derived from cross 095×L26.The result showed that,kernel row of ear,ear weight and grain weight were fitted by one additive major gene plus additive-dominance polygenes model(D-2);Ear diameter and 1000-kernel weight were fitted by two additive-dominance-epistasis major gene(B-1) model;Bald tip length was fitted by two additive major gene plus additive-dominance polygenes mode(E-3).Genetic analysis of ear-related traits with major gene plus polygene mixed inheritance model in maize will help to elucidate the genetic mechanism of ear characters.

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Key concepts: Polygene, Biology, Major gene, Epistasis, Genetic model, Genetic analysis, Dominance (genetics), Quantitative trait locus