摘要： 大豆高维生素E含量专用品种的选育是现代大豆品质育种的重要方向,为给大豆高维生素E含量专用品种选育提供遗传学依据,通过对大豆重组自交系群体2008-2009年的维生素E含量进行相关的遗传分析,以Essex×ZDD2315衍生的208个重组自交家系群体BIEX为材料,用主基因＋多基因混合遗传模型,分析大豆α-、γ-、δ-生育酚含量以及VE总含量的遗传机制.结果表明,α-生育酚含量、γ-生育酚含量以及VE总含量均属于2对主基因+多基因遗传模型,主基因遗传 率分别为59.62%,75.99%,77.05%,多基因遗传率分别为35.90%,13.96%,15.05%;δ-生育酚含量属于1对主基因+多基因遗传模型,主基因遗传率为50.39%,多基因遗传率为38.11%.维生素E及其组分含量遗传涉及主基因和多基因,主基因遗传率在50%以上,多基因遗传率在10%以上,建议育种中要兼顾主基因和微效多基因的利用.

关键词: 大豆, 维生素E含量, 主基因+多基因混合遗传模型, 分离分析

Abstract: Breeding for high vitamin E contents in soybeans is highly concerned recently.The objective of the present study was aimed at revealing the genetic system of vitamin E contents with a recombinant inbred line for the traits improvement in 2008 and 2009 years.Genetic mechanism of vitamin E composition contents in soybean was performed under major gene plus polygene mixed inheritance model in the RIL population of BIEX consisting of 208 families derived from the cross Essex×ZDD2315.The results showed that α-tocopherol,γ-tocopherol and total tocopherol contents of the cross were controlled by two major genes plus polygenes,with the major gene heritability of 59.62%,75.99% and 77.05%,respectively,and polygene heritability of 35.90%,13.96% and 15.05%,respectively.δ-tocopherol content of the cross was controlled by one major gene plus polygenes,with the major gene heritability of 50.39%,and the polygene heritability of 38.11%.The inheritance of vitamin E composition contents in soybean involved with both major genes and polygenes while the major genes with their heritability of more than 50% and the polygene heritability of more than 10%.From described above,it was inferred that breeders for vitamin E contents should pay attention to both main genes and polygenes.

Key words: Soybean, Vitamin E contents, Major genes plus poly-gene modle, Segregation analysis

中图分类号: 

• S565.03