大豆茎秆性状多年遗传分析与互作基因定位

Genetic Analysis and Gene Location of Interactions for Soybean Stem Traits

株高和茎秆重是大豆品种高产和理想株型的重要指标,是大豆重要的产量性状。为进一步研究数量性状,开拓新的研究领域,以Charleston和Dongnong594为亲本衍生出的重组自交系群体为试验材料,利用SEA软件下的主基因+多基因混合遗传模型对8个年份下的147株重组自交系群体的株高和茎秆重进行了遗传分析,之后利用Gene interaction软件进行基因互作分析。结果表明:大豆株高在2006年、2007年和2013年均符合2MG-Duplicate、2MG-Inhibiting两种模型,在2009年和2010年都符合模型2MG-Complementary。大豆茎秆重在2006年、2007年、2009年、2010年、2013年均符合2MG-Complementary模型,2006年、2007年均符合2MG-RecessiveI模型,在2010年符合2MG-Additive模型。在符合率70%以上的条件下,2对互作基因影响株高,1对互作基因影响茎秆重。

Plant height and stem weight is an important target of high-yield and idea plant type in soybean. In order to provide the basis for the further study of quantitative traits,open up a plant new research field, a total of 147 recombination inbred lines （RIL） were derived from a cross of Charleston and Dongnong 594 as experimental materials. The plant height and stem weight trait for 147 RILs population in soybean were analyzed by using the mixed major gene plus polygene inheritance model by SEA software. And then,through the analysis of the genotypes, the genetic gene interactions software were got to analyze the gene interactions. The results showed that the plant height in 2006,2007 and 2013 were accord with 2MG-Duplicate and 2MG-Inhibiting model respectively. During 2009 to 2010, the plant height were conform to 2MG-Complementary model. The stem weight in soybean in 2006,2007,2009,2010 and 2013 years were accord with 2MG-Complementary model. Environments of in 2006 and 2007 conformed to 2MG-RecessiveI model. Only one year the stem weight had a consistent to 2MG-Additive model for 2010. Under the condition of coincidence rate was more than 70% ,the plant height were affected by 2 interactions genes each other, 1 interaction gene could affect the stem weight.