新疆农业科学2011，Vol.48Issue(12)：2205-2210,6.DOI:65-1097/S.20120109.2042.008
两个粳稻材料芽期和苗期耐盐性的QTL定位
QTLs Mapping for Salt Tolerance at Seed Germination and Seedling Stage in Xinjiang Rice (Oryza sativa L.)
摘要
Abstract
[Objective] In order to provide theoretical and practical basis for salt tolerance germplasm and molecular marker - assisted breeding of rice, we studied quantitative trait loci (Quantitative trait locus, QTL) location for salt tolerance at rice bud and seedling stage. [ Method ] The experiment obtained the 272 F2 population by crossing between salt tolerant strain 02-11 and salt - susceptible variety " Qiutianxiaoding". And salt injury of major agronomic traits during gernation and seedling stage as index, the molecular map was constructed using SSR marker and QTL was identified by inclusive composite interval mapping. [ Result ] A total of 20 QTLs were detected on chromosomes 1, 2, 4, 6, 8, 10 and 11, and the variation range of LOD values was from 2. 57 to 8. 39, the contribution rate range of phenotypic variances was from 2. 97% to 15.59%. 4 QTLs showed dominant effect by genetic analysis, and Ny - 12, NY - 12 and NY - 19 showed significant effects, NY - 17 showed partial dominance. [ Conclusion] The QTLs on rice salt tolerance laid a better foundation for fine positioning and cloning rice salt tolerance gene and rice breeding.关键词
水稻/芽期和苗期耐盐性/QTL分析/SSR标记Key words
rice(Oryza sativa L. ) / salt tolerance during germination and seedling stage/ QTL mapping/ SSR marker分类
农业科技引用本文复制引用
王奉斌,张燕红,文孝荣,袁杰,布哈丽且木·阿布力孜,朱小霞,瞿毅..两个粳稻材料芽期和苗期耐盐性的QTL定位[J].新疆农业科学,2011,48(12):2205-2210,6.基金项目
新疆维吾尔自治区高技术研究发展计划项目(200910101) （200910101）
新疆维吾尔自治区科技成果转化专项基金项目(201154101) （201154101）
