中国水稻科学2013，Vol.27Issue(4)：381-388,8.DOI:10.3969/j.issn.1001-7216.2013.04.007
水稻单片段代换系芽期和苗期耐冷性分析及耐冷性QTL鉴定
Characterization of Cold Tolerance and Identification of Cold Tolerance QTLs for Rice Single Segment Substitution Lines at Plumule and Seedling Stages
摘要
Abstract
The cold tolerance at plumule stage (CTP) and seedling stage (CTS) were respectively evaluated at 4℃ and 13℃/7℃ (day/night) using a set of single segment substitution lines (SSSLs) derived from indica recipient (9311) and japonica donor (Nipponbare).The survival seedling rate and the normal leaf rate (NLR) were used as the estimation index for CTP and CTS,respectively.The results showed that the CTP and CTS of Nipponbare were extremely stronger than those of 9311,and the difference of CTP and CTS were extremely significant among SSSLs.The SSSLs (X724,X732 and X733) with strong CTP and CTS mostly kept the agronomic traits of 9311.The General Combing Ability (GCA) of these three SSSLs,such as yield GCA,were much better than that of 9311.A total of 18 quantitative trait loci (QTLs) for CTP,5 QTLs for CTS were identified among 20 introgression segments distributed on 12 chromosomes.Among these QTLs,the CTP QTLs (qCTP9,qCTP11.2 and qCTP12.1),and the CTS QTLs (qCTS1.1 and qCTS1.2) showed more additive effect,and the corresponding SSSLs of those QTLs displayed stronger CTP and CTS,respectively.关键词
水稻/单片段代换系/芽期/苗期/耐冷性/数量性状基因座Key words
rice/ single segment substitution lines/ plumule stage/ seedling stage/ cold tolerance/ QTL分类
生物科学引用本文复制引用
周勇,朱孝波,袁华,郑英,钦鹏,魏应海,王玉平,黄世君,李仕贵..水稻单片段代换系芽期和苗期耐冷性分析及耐冷性QTL鉴定[J].中国水稻科学,2013,27(4):381-388,8.基金项目
国家杰出青年基金资助项目(31025017) （31025017）
国家863计划资助项目(2012AA101101). （2012AA101101）
