2010•Shenyang Nongye Daxue xuebaoRequires access

Genetic analysis and QTL location of plant height trait in Liaojing371 × Liaojing326 combination.

Wang Dawei, Yu HongLan, Wei Wang, Bolun Wang

Abstract

Plant height(PH) trait of Liaojing371×Liaojing326 was analyzed by the mixed major gene plus poly-genes genetic model of quantitative traits.The results showed that PH trait was controlled by two major genes with additive-dominance-epistasis effects plus polygene with additive-dominance-epistasis effects(E-0 model).The two major genes showed additive effects as 11.7 and 4.3,respectively.The heritability of the two major genes was about 90.0%.SSR markers on F2 and Qgene software were used to analyze QTLs of this combination.Two gene loci qPH-9-1 and qPH-9-2 were positioned on Chromosome 9 with high LOD value 6.4 and 4.1,additive effects of 24.2 and 4.1,heritability of 18.7% and 12.3% respectively.

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Key concepts: Polygene, Quantitative trait locus, Epistasis, Heritability, Biology, Major gene, Genetics, Dominance (genetics)