【摘要】 土壤盐渍化严重制约水稻生产发展,提高耐盐性已成为水稻育种的重要目标之一。挖掘水稻耐盐新基因,解析其分子作用机制可以为水稻耐盐性遗传改良奠定基础。本文从定位群体、耐盐性鉴定时期和鉴定方法、耐盐性评价指标、鉴定到的耐盐QTL、耐盐QTL的精细定位和图位克隆等方面,总结了近年来水稻耐盐QTL定位研究中所取得的进展;介绍了水稻耐盐/盐敏感突变体筛选和基因克隆以及耐盐性关联分析的研究近况;并对水稻耐盐性分子标记辅助选择改良的现状作了概述。更多还原

【Abstract】 Soil salinization severely restricts the development of rice production, and improving salt tolerance in rice has become one of the most important objectives in rice breeding programs. Isolation of novel genes involved in salt tolerance and clarifying its molecular mechanism can lay a foundation for the genetic improvement of salt tolerance in rice. In this paper, we summarized the the progress on mapping of quantitative trait loci(QTL) for rice salt tolerance in the following aspects: mapping populations, growth stages for evaluation of salt tolerance and evaluation methods, evaluation parameters of salt tolerance, QTLs involved in salt tolerance, fine mapping and map-based cloning of QTLs for salt tolerance. We also introduced recent progress on genetic screening and gene cloning of salt-tolerant and salt-sensitive mutants, as well as association mapping of salt tolerance in rice. Additionally, we reviewed the recent advances in variety improvement for salt tolerance by molecular marker-assisted selection in rice.更多还原