不同供水条件下水稻叶绿素含量的QTL分析

发布时间:2008-09-18 阅读点击:155

摘 要:在水分胁迫和非水分胁迫条件下分别种植水稻亲本和重组自交系(RIL)群体,在苗期生长阶段和开花后采用漆标定位方法分别考察叶片的叶绿素含量变化,进行不同水分环境下叶绿素含量和胁迫敏感指数的遗传分析.在两种不同水分供应条件下,在不同生育期共定位到13个控制叶绿素含量的具有加性效应的QTL,其中干旱环境中检测到6个,贡献率为4.74%~19.86%;水田环境中检测到7个,贡献率为4.92%~14.02%;未检测到两种环境下共同表达的QTL.检测到7个影响胁迫敏感指数的QTL,其中在苗期和开花期第1次测定时分别检测到的影响胁迫敏感指数的QTL(qkhChl-2a和qkhChl-6)贡献率高达25.29%和38.70%,增效等位基因均来自母本珍汕97B.
关键词:水稻;重组自交系;数量性状座位;叶绿素含量;干旱
分类号:S511;Q945.78  文献标识码:A

文章编号:1008-9209(2007)04-0400-07

QTL analysis of chlorophyll contents in rice under different water supply

SHEN Bo  ZHUANG Jie-yun  FAN Ye-yang  JIANG Jing  ZHENG Kang-le 

基金项目:农业部超级稻资助项目(2006-6);浙江省重点资助项目(2003G10028);中国博士后科学基金资助项目(2003034232).
作者简介:沈波(1965-),男,博士,教授,从事水稻生理遗传研究.E-mail:bshen65@hzcnc.com.
作者简介:通讯作者:郑康乐,男,研究员,从事水稻遗传研究.E-mail:zhengkangle@china.com.
作者单位:沈波(中国水稻研究所,国家水稻改良中心,水稻生物学国家重点实验室,浙江,杭州,310006;杭州师范大学,生命与环境科学学院,浙江,杭州,310036) 
     庄杰云(中国水稻研究所,国家水稻改良中心,水稻生物学国家重点实验室,浙江,杭州,310006) 
     樊叶杨(中国水稻研究所,国家水稻改良中心,水稻生物学国家重点实验室,浙江,杭州,310006) 
     蒋靓(杭州师范大学,生命与环境科学学院,浙江,杭州,310036) 
     郑康乐(中国水稻研究所,国家水稻改良中心,水稻生物学国家重点实验室,浙江,杭州,310006) 

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