摘要
利用来自籼稻品种H359和Acc8558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150mmol/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。
Based on a recombinant inbred population consisting of 131 lines derived from a cross between two indica rice varieties, H359 and Ace 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 NaCI 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, qSClb 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 saltstress-related QTLs/genes reported previously.
出处
《中国水稻科学》
CAS
CSCD
北大核心
2007年第6期585-590,共6页
Chinese Journal of Rice Science
基金
福建农林大学青年教师基金资助项目(03A05
04B02)
福建省科技计划资助项目(2006F5020)
关键词
水稻
钠离子含量
数量性状座位
盐胁迫
耐盐性
rice
sodium ion content
quantitative trait loci
salt stress
salt tolerance
