水稻4种农艺性状QTL的初步定位分析  

Preliminary Analysis of 4 QTLs for Agronomic Traits in Rice

作　　者：刘欣[1] 王君[2] 曾伟[2] 王永亮[2] 陈保善[2] 李文兰[1,2] 罗继景[2] 

机构地区：[1]桂林理工大学化学与生物工程学院,桂林541006 [2]广西大学生命科学与技术学院,亚热带生物资源保护与利用国家重点实验室,南宁530004

出　　处：《基因组学与应用生物学》2014年第3期604-609,共6页Genomics and Applied Biology

基　　金：广西自然科学基金回国基金项目(2013GXNSFCA019007);广西大学科研基金资助项目(XBZ120774)共同资助

摘　　要：本研究以粳稻品种"藤坂5号"与籼稻品种"江西丝苗"为亲本杂交构建的F2分离群体(137个单株)作为作图群体,对控制水稻株高、剑叶宽、剑叶长和剑叶长宽比4种农艺性状的QTL进行定位分析。分别在第1、3、4和7染色体上检测到7个QTLs,其中qPH-3、qFLLW-4和qFLW-3在其所控制的相应性状(株高,剑叶宽和剑叶长宽比)所定位到的QTL中的贡献率是最大的,是主效QTL。然而,在本研究中并未检测到控制剑叶长的QTL。这些分析结果为进一步的分析和精细定位奠定基础,为育种和种质创新提供理论依据。A F2mapping population derived from the cross between Fujisaka 5 and Jiangxisimiao, which includes 137 individuals, was used as mapping population to preliminary map QTLs underlying agronomic associated traits that include plant height, flag leaf length, flag leaf width, and flag leaf length/width ratio in this study. A total of 7 QTLs for these phenotypes were identified on chromosomes 1, 3, 4, and 7, respectively.Two QTLs were detected responsible for both plant height and flag leaf width and qPH-3 and qFLW-3 were found to be the major effect QTLs. For flag leaf length/width ratio, three QTLs were detected, and qFLW-3was found to be a major QTL. However, QTL underlying flag leaf length wasn＇t identified in this study.These findings lay a solid base for the further fine mapping of these important QTLs in the future.

关 键 词：水稻 农艺性状 QTL(数量性状基因座) 定位分析 

分 类 号：S511[农业科学—作物学]