| 主办单位: |
| 中国科学院遗传与发育生物学研究所 |
| 中国遗传学会 |
| 编辑单位: |
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《遗传学报》 编辑部
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| 主 编: 薛勇彪 |
| 主 任: 张颖 |
编委阵容 |
| 审稿专家 |
| 国内刊号： |
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CN 11-5450/R
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| 国际刊号： |
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ISSN 1673-8527
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| 邮发代号： 2-819
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遗传学报 2004.3 Vol 31, No.3 275-280
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| 栽培稻旱胁迫叶片相关性状的遗传解析 |
| Genetic Dissection for Leaf Correlative Trai ts of Rice (Oryza sativa L.) Under Drought Stres |
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| 郭龙彪 1,3 ,钱 前 1,① ,曾大力1,董国军1,滕 胜1,朱立煌2 |
| 1.中国水稻研究所国家水稻生物学重点实验室，杭州 310006； 2.中国科学院遗传与发育生物学研究所，北京 100101 3.浙江大学生命科学院，杭州 310029 |
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| Key Words： 栽培稻；旱胁迫；加倍单倍体(DH)群体；叶片相关性状；数量性状基因(QTL) |
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Abstract
利用籼稻窄叶青8号（ZYQ8）和粳稻京系17（JX17）衍生的 加倍单倍体（DH）群体1 27个株系，2002年在杭州采用田间断水法栽培，在水分胁迫下，对叶片的卷叶、相对含水量 和电导率3个性状进行了评价和QTL分析。结果表明，3个性状在DH群体中均存在双向超亲分 离，接近正态分布，受数量性状基因的控制；检测到影响这些性状的6个QTL，其中卷叶3个 （ qLR-1,qLR-5和qLR-11 ）、相对含水量2个（qRWC-1和qRWC-6 ）和电导率1个( qREC-6))。旱胁迫时，目测卷叶方便易行，适于对大批品种或资源筛选，对抗旱栽培稻品种 的筛选和利用具有一定的指导意义。 |
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Abstract
Water is becoming a restricted factor of agricultur al development owi ng to the global shortage of water resources.Screening and improving drought to lerant rice cultivars would be helpful for increasing and stabilizing yield,ec onomizing water and reducing environmental pollution.In this study,127 rice li nes of DH population derived from an indica variety Zhaiyeqing 8 (ZYQ8) and a japonica variety Jingxi 17 (JX17) were used to locate QTLs for leaf rollin g,relat ive water content and rate of electric conductivity under drought stress.The re sults showed that significant differences between the parents were detected for all measured traits.The tremendous transgressive segregations for these traits were observed in the population.The frequency of all traits in the population w as approximately normally distributed with slight skew.A total of six QTLs for the three traits were detected with molecular linkage map of 234 markers,includ ing three QTLs ( qLR-1,qLR-5 and qLR-11 ) for l eaf rolling,two QTLs ( qRWC-1 and qRWC-6 ) for r elative water content and one QTL ( qREC-6 ) for rate of electric conductivity.Visual measurement for leaf rolling can be used to scr een a large number of rice germplasm resources or varieties,which is of importan ce to screening and utilization of drought tolerant rice varieties. |
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中国科学院遗传与发育生物学研究所
