中国水稻科学

中国水稻科学

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水稻剑叶气孔性状QTL分析

李睿1;赵姝丽1;毛艇2; 徐正进1,*;陈温福1   

  1. 1沈阳农业大学 水稻研究所/农业部作物生理生态遗传育种重点开放实验室/辽宁省北方粳稻遗传育种重点实验室, 辽宁 沈阳 110161; 2辽宁省盐碱地利用研究所, 辽宁 盘锦 124200; *通讯联系人, E-mail: xuzhengjin@126.com
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2010-11-10 发布日期:2010-11-10

QTL Analysis on Stomatal Trait of Flag Leaf in Rice

LI Rui1; ZHAO Shu-li1; MAO Ting2; XU Zheng-jin1,* ; CHEN Wen-fu1   

  1. 1Rice Institute, Shenyang Agricultural University/Key Laboratory of Crop Physiology, Ecology, Genetics and Breeding, Ministry of Agriculture/Key Laboratory of Northern Japonica Rice Breeding of Liaoning, Shenyang 110161, China； 2Liaoning Provincial SalineAlkali Land Utilization and Research Institute, Panjin 124200, China; *Corresponding author, E-mail: xuzhengjin@126.com
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-11-10 Published:2010-11-10

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摘要：

为剖析水稻叶片气孔性状的遗传机理，以典型籼稻七山占和典型粳稻秋光构建的F10重组自交系群体为材料，用该群体包括122个SSR标记的遗传连锁图谱对水稻齐穗期剑叶气孔性状进行了QTL分析。共检测到9个控制气孔相关性状的QTL。包括4个控制气孔密度的QTL（qSD1、qSD4、qSD7和qSD8），分别位于第1、4、7和8染色体上，贡献率分别为72%、81%、91%和59%；2个控制气孔长度的QTL（qSL4和qSL6），位于第4和6染色体上，贡献率分别为66%和105%；3个控制气孔宽度的QTL（qSW5、 qSW7和qSW10），位于第5、7和10染色体上，贡献率分别为124%、97%和56%。与其他研究结果相比较发现，除qSD1外，其余8个QTL过去均未曾报道过，其中位于第4染色体上控制气孔密度的qSD4与前人检测到的控制光合速率的QTL重叠。

关键词: 水稻, 数量性状基因座, 气孔密度, 气孔长度, 气孔宽度

Abstract: To understand the genetic mechanism of stoma related traits, an F10 population derived from a cross between a tropical japonica rice (Akihikari) and an indica rice(Qishanzhan) was used to analyze QTLs controlling the stoma related traits. Nine QTLs for stoma related traits were detected. Four putative QTLs(qSD1, qSD4, qSD7, qSD8) controlling stomatal density were located on chromosomes 1, 4, 7 and 8, with the explained variance of 7.2%, 8.1%, 9.1% and 5.9%, respectively. Two QTLs(qSL4, qSL6) for stomatal length were detected on chromosomes 4 and 6, with the explained variance of 6.6% and 10.5%, respectively. Three QTLs(qSW5, qSW7, qSW10) for stomatal width were detected on chromosomes 5, 7 and 10, with the explained variance of 12.4%, 9.7% and 5.6%, respectively. All the eight QTLs except qSD1 were not previously reported. qSD4 on chromosome 4 controlling stomatal density was overlapped with the QTL of photosynthetic rate which was detected before.

Key words: rice, quantitative trait locus, stomatal density, stomatal length, stomatal width, genetics