摘要
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,分析染色体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相关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,增效位点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 inherit-ance of brown rice rate was characterized using 119 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 Nip-ponbare 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.
出处
《华北农学报》
CSCD
北大核心
2013年第6期1-5,共5页
Acta Agriculturae Boreali-Sinica
基金
国家重点基础研究发展计划项目(2010CB125904)
江苏省科技支撑计划项目(BE2012309)
国家与江苏省粮食丰产科技工程项目(No.2011BAD16B03/BE2009425)
江苏省农业科技自主创新基金项目(CX(12)1003-2)
江苏省植物功能基因组学重点实验室开放课题(K12003)
关键词
水稻
糙米率
数量性状位点
染色体单片段代换系
代换作图
Rice
Brown rice rate
Quantitative trait loci
Chromosome single segment substitution lines
Substitution mapping
