QTL Analysis for Leaf Number on Main Stem in RILs of Super Hybrid Rice Xieyou 9308

doi:10.3969/j.issn.10017216.2012.03.006

Chinese Journal of Rice Science ›› 2012, Vol. 26 ›› Issue (3): 291-296.DOI: 10.3969/j.issn.10017216.2012.03.006

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QTL Analysis for Leaf Number on Main Stem in RILs of Super Hybrid Rice Xieyou 9308

DAI Gaoxing ^1,2, YANG Zhanlie ^1,3, DENG Guofu ², ZHANG Yingxin ¹, WANG Huimin ¹, ZHAI Rongrong ¹, CAO Liyong ^1,* , CHENG Shihua ^1,*

¹National Center for Rice Improvement, China National Rice Research Institute, Hangzhou 310006, China; ²Rice Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530007, China; ³Rice Research Institute, Guizhou Academy of Agricultural Sciences, Guiyang 550006, China;

Received:2012-03-13 Revised:2012-03-22 Online:2012-05-10 Published:2012-05-10
Contact: CAO Liyong1,*, CHENG Shihua1,*

超级杂交稻协优9308重组自交系主茎叶片数的动态QTL分析

戴高兴^1,2,杨占烈^1,3,邓国富²,张迎信¹,王会民¹,翟荣荣¹,曹立勇^1，* ,程式华^1，*

¹中国水稻研究所国家水稻改良中心, 浙江杭州 310006；² 广西农业科学院水稻研究所, 广西南宁 530007；³ 贵州省农业科学院水稻研究所，贵州贵阳 550006;

通讯作者: 曹立勇1，* ,程式华1，*
基金资助:
农业部作物种质资源保护项目（NB2011213013527）；中央级公益性科研院所专项资金资助项目（2009RG0013）；浙江省重点科技创新团队项目（2010R5002416）。

Abstract

Abstract: QTLs for leaf number were identified with a set of recombinant inbred lines (RILs) derived from the cross of Xieqingzao B/Zhonghui 9308 as materials by the conditional composite interval mapping method. Five unconditional QTLs and two conditional QTLs were detected at different growth stages. The unconditional QTLs, qLN2.1, qLN2.2, qLN2.3 and qLN2.4, explained 11.68%-16.48% of phenotypic variation, tending to cluster on the long arm of chromosome 2. QTL analysis showed that the express period of conditional QTLs, qLN2.2 and qLN2.4, were unanimous to the dates of elongating and heading. Only one unconditional QTL for final leaf number was detected, but there was no effect of conditional QTL at all the tested developmental stages, indicating QTLs for leaf number were mainly expressed in spatial and temporal patterns.

Key words: hybrid rice, leaf number, heading date, quantitative trait locus

摘要： 利用超级杂交稻协优9308（协青早B×中恢9308）衍生的重组自交系群体，采用条件复合区间作图法对主茎叶片数进行了动态QTL分析。在各时期检测到5个非条件QTL和2个条件QTL。非条件QTL qLN2.1、qLN2.2、qLN2.3和qLN2.4在第2染色体上成簇分布，单个非条件QTL可解释的表型变异介于11.68%～16.48%。2个条件QTL qLN2.2和qLN2.4表达时段与拔节盛期和抽穗盛期一致。最终只检测到1个叶片数非条件QTL，没有一个叶片数条件QTL能在测定的所有时期都有效应。表明控制水稻叶片数的QTL表达具有时空性。

关键词: 杂交稻, 叶片数, 抽穗期, 数量性状基因座

CLC Number:

DAI Gaoxing1,2, YANG Zhanlie1,3, DENG Guofu2, ZHANG Yingxin1, WANG Huimin1, ZHAI Rongrong1, CAO Liyong1,*, CHENG Shihua1,*. QTL Analysis for Leaf Number on Main Stem in RILs of Super Hybrid Rice Xieyou 9308[J]. Chinese Journal of Rice Science, 2012, 26(3): 291-296.

戴高兴1,2,杨占烈1,3,邓国富2,张迎信1,王会民1,翟荣荣1,曹立勇1，* ,程式华1，*. 超级杂交稻协优9308重组自交系主茎叶片数的动态QTL分析[J]. 中国水稻科学, 2012, 26(3): 291-296.

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QTL Analysis for Leaf Number on Main Stem in RILs of Super Hybrid Rice Xieyou 9308

超级杂交稻协优9308重组自交系主茎叶片数的动态QTL分析

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