Effects of soybean major maturity genes under different photoperiods.
Effects of soybean major maturity genes under different photoperiods.
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DOI：
10.3724/sp.j.1006.2008.01160
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发表时间：
2008-01-01
期刊：
影响因子：
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通讯作者：
Han, T. F.
中科院分区：
文献类型：
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作者：
Wang Ying, Wang Ying;Wu CunXiang, Wu CunXiang;Han, T. F.
大豆成熟度及其相关性状对大豆的产量、品质和适应性具有重要影响。到目前为止，已经鉴定出几个控制大豆开花和成熟时间的主要基因。了解不同光周期下成熟基因的效应，有助于大豆品种发育中生育期性状的定性设计。本研究利用来自Clark和Harosoy的39个近等基因系（NILs），分析了E1/ E1、E2/ E2、E3/ E3、E4/ E4、E5/ E5和E7/ E7 6个主要成熟基因对大豆发育周期的影响。在大多数基因型中，显性等位基因倾向于延迟开花和成熟时间。基因作用依赖于遗传背景，显性等位基因可以增强其他成熟基因的作用，说明主基因之间存在相互作用。长日（LD）条件下的主要基因效应与短日（SD）条件下不同。LD促进了显性等位基因的作用，延迟了开花和成熟，SD则相反。此外，大豆各发育阶段的光周期效应也各不相同。E1和E4分别对花前和花后的光周期敏感，而E3对花前和花后的光周期都敏感。
Maturity and its related traits are important for the yield, quality and adaptability of soyabean. Up to now, several major genes have been identified to control the flowering and maturity time in soyabean. The understanding of the maturity gene effect under different photoperiods will facilitate the qualitative design of growth period traits in soyabean variety development. In this study, 39 near-isogenic lines (NILs) derived from Clark and Harosoy were used to analyse the effects of 6 major maturity gene pairs including E1/e1, E2/e2, E3/e3, E4/e4, E5/e5, and E7/e7 on developmental periods of soyabean. The dominant alleles tended to delay the flowering and maturity time in most of the genotypes studied. Gene effect was dependent on the genetic background, and the dominant allele could strengthen the effect of other maturity genes, indicating that there were interactions between major genes. The major gene effects under long-day (LD) condition differed from those under short-day (SD). LD promoted the roles of dominant alleles and delayed the flowering and maturity while SD had the opposite effects. Additionally, the photoperiod effects were also varied in the developmental stages of soyabean. E1 and E4 were sensitive to photoperiod before and after flowering respectively, whereas E3 was sensitive to photoperiod during both of the two stages.