Impact of epistasis and QTLxenvironment interaction on the developmental behavior of plant height in rice (Oryza sativa L.)
Impact of epistasis and QTLxenvironment interaction on the developmental behavior of plant height in rice (Oryza sativa L.)
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DOI：
10.1007/s001220100536
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发表时间：
2001-07-01
影响因子：
5.4
通讯作者：
Wu, P
中科院分区：
文献类型：
--
作者：
Cao, G;Zhu, J;Wu, P
以123个来自IR 64/Azucena的双单倍体群体为材料，采用常规和条件QTLs定位方法，研究了水稻株高发育行为的上位性和环境互作效应QTL。结果表明，上位性效应是重要的，大多数上位性效应只能通过条件QTL定位检测到，而大多数非上位性QTL可以通过常规和条件QTL定位检测到。许多修饰性QTL在某些阶段只表现上位性效应，而不表现自身的加性效应。在株高性状中，QTL与环境的互作效应比QTL的主效应多，表明环境对基因表达有很大的影响。没有QTL在整个个体发育过程中起作用。条件QTL定位可能是揭示数量性状基因表达动态的有效方法，尤其是上位性效应。
QTLs with epistatic effects and environmental interaction effects for the developmental behavior of plant height in rice were studied by conventional and conditional methods for quantitative trait loci (QTLs) by mapping with a doubled-haploid population of 123 lines from IR64/Azucena in three environments. The results showed that epistatic effects were important and most epistasis could be detected only by conditional QTL mapping, while most non-epistatic QTLs could be detected by both conventional and conditional methods. Many modificative QTLs showed only epistatic effects without their own additive effects at some stages. QTLxenvironment (QE) interaction effects were detected more often than QTL main effects for plant-height behavior, which might indicate that gene expression could be greatly affected by the environment. No QTLs had effects during the whole of ontogeny. Conditional QTL mapping might be a valid way to reveal dynamic gene expression for the development of quantitative traits, especially for epistatic effects.