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盐胁迫下水稻苗期Na+含量的QTL定位
引用本文:汪斌,兰涛,吴为人.盐胁迫下水稻苗期Na+含量的QTL定位[J].中国水稻科学,2007,21(6):585-590.
作者姓名:汪斌  兰涛  吴为人
作者单位:1.福建农林大学 生命科学学院, 福建 福州 350002; 2福建农林大学 作物科学学院, 福建 福州 350002;3.福建省水稻分子标记辅助育种重点实验室, 福建 福州 350002;
基金项目:福建农林大学校科研和教改项目;福建省科技攻关项目
摘    要:利用来自籼稻品种H359和Acc 8558的一个重组自交系群体(131个株系)及相应的遗传图谱(包含147个RFLP和79个SSR标记),以150 mmol/L的NaCl处理后的幼苗地上部Na+含量为指标,采用复合区间定位方法,对水稻耐盐性QTL进行了定位。共检测到13个QTL,分别位于第1、2、5、6、7和12染色体上,对表型变异的总贡献率达到60.88%,其中,qSC1b的效应最大,可解释约45%的表型变异。通过比较表明,许多前人报道的与水稻盐胁迫有关的QTL/基因与本研究检测到的QTL的位置相同或相近。

关 键 词:水稻  钠离子含量  数量性状座位  盐胁迫  耐盐性  
文章编号:1001-7216(2007)06-01585-06
收稿时间:2007-04-25
修稿时间:2007-06-14

Mapping of QTLs for Na+ Content in Rice Seedlings under Salt Stress
WANG Bin,LAN Tao,WU Wei-ren.Mapping of QTLs for Na+ Content in Rice Seedlings under Salt Stress[J].Chinese Journal of Rice Science,2007,21(6):585-590.
Authors:WANG Bin  LAN Tao  WU Wei-ren
Institution:1 College of Life Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China; 2College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China;3 Fujian Provincial Key Laboratory of Rice Molecular Marker-Assisted Breeding,Fuzhou 350002, China
Abstract:Based on a recombinant inbred population consisting of 131 lines derived from a cross between two indica rice varieties,H359 and Acc 8558,and a corresponding genetic map comprising 147 RFLP and 79 SSR markers,QTL mapping was performed for salt tolerance in rice indicated by Na content in shoots of seedlings after treatment with 150 mmol/L NaCl by using the method of composite interval mapping.A total of 13 QTLs were detected on chromosomes 1,2,5,6,7 and 12,which could explain 60.88% of total phenotypic variance.Among the QTLs,qSC1b had the largest additive effect,explaining about 45% of the phenotypic variance.The QTLs identified in this study shared the same or similar regions with many salt-stress-related QTLs/genes reported previously.
Keywords:rice  sodium ion content  quantitative trait loci  salt stress  salt tolerance
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