水稻抽穗期基因定位及其环境互作研究

QTL Mapping and Gene × Environment Interaction Analysis of Days to Heading in Rice(Oryza sativa L.)

利用由小穗小粒型品种‘密阳46’和大穗大粒型品种FJCD建立的一个包含130个家系F10的重组自交系群体,构建SSR分子标记图谱,测定武夷山和莆田环境下水稻群体的抽穗期,并进行了QTL的定位及环境互作研究。结果表明,在武夷山环境下仅检测到一个与抽穗期相关的加性QTL,位于6号染色体上,解释了25.63%;1个位点存在显著的加性×环境互作效应,而GE互作效应对表型变异贡献几乎为0,表明控制水稻抽穗期基因的表达有显著的环境特异性。

Mapping of quantitative trait loci（QTL） and gene × environment interaction were used to research days to heading from a RIL（recombinant inbred lines） including 130 lines deriving from Milyang 46 and FJCD by SSR molecular marker technonique This research work carried in Wuyishan and Putian.In Wuyishan,only one additive QTL associated with days of heading were detected,located on chromosome 6,explained 25.63%;one QTL showed significant additive × environment interaction effect,while the contribution of GE interaction effect to phenotypic variation is almost to zero.This illustrates QTLs with days to heading have environmental specificity.