基于染色体单片段代换系的水稻糙米率QTL的定位
QTL Mapping of Brown Rice Rate Using Chromosome Single Segment Substituted Lines in Rice
水稻糙米率是衡量稻米碾磨品质的指标之一。本研究以广陆矮4号为受体，日本晴为供体的119个染色体单片段代换系为材料，通过单因素方差分析和Dunnett's多重比较，分析单片段代换系与受体亲本之间糙米率的差异，对代换片段上的糙米率QTL进行鉴定。以P≤0.001为阈值共检测到2个糙米率QTL，利用代换作图法将其分别定位在第6染色体和第9染色体上，2个QTL均表现为增效作用，增效基因来自于粳稻亲本日本晴，其加性效应值分别为1.49%和1.32%，加性效应百分率分别为1.89%和1.68%。该研究对进一步发掘和利用新的水稻糙米率QTL具有重要意义，同时对提高水稻糙米率、增加稻米的实际产量具有十分重要的经济价值。
Brown rice rate is one of the indexes for rice milling quality measurement. In this study, the inheritance of brown rice rate was characterized using a set of chromosome single segment substitution lines (CSSSLs) derived from Nipponbare and Guangluai 4. One-way ANOVA and Dunnett's test were employed to compare the difference between CSSSLs and the recurrent parent Guangluai 4. We detected 2 QTL (P≤0.001) for brown rice rate which were primarily mapped on chromosome 6 and 9 by substitution mapping. Both of the allele from donor parent Nipponbare had positive effects. The additive effects of 2 QTL were 1.49% and 1.32% respectively, with additive effect percentages 1.89% and 1.68%. These results provide useful information for exploring and using new brown rice rate related QTL, and also have important economic value for increasing brown rice rate and actual production of rice.
仲维功、高云、朱松松、朱金燕、王军、梁国华、裔传灯、周勇
农作物遗传学农艺学
水稻糙米率数量性状位点染色体单片段代换系代换作图
RiceBrown rice rateQuantitative trait lociChromosome single segment substitution linesSubstitution mapping
仲维功,高云,朱松松,朱金燕,王军,梁国华,裔传灯,周勇.基于染色体单片段代换系的水稻糙米率QTL的定位[EB/OL].(2013-07-15)[2025-08-18].http://www.paper.edu.cn/releasepaper/content/201307-212.点此复制
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