QTL Analysis on  Stomatal Trait  of Flag Leaf  in Rice

doi:10.3969/j.issn.1001-7216.2010.06.017

Abstract

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

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

LI Rui,ZHAO Shu-li,MAO Ting,XU Zheng-jin ,CHEN Wen-fu. QTL Analysis on Stomatal Trait of Flag Leaf in Rice [J]. Chinese Journal of Rice Science, DOI: 10.3969/j.issn.1001-7216.2010.06.017 .

李睿,赵姝丽,毛艇, 徐正进,陈温福. 水稻剑叶气孔性状QTL分析[J]. 中国水稻科学, DOI: 10.3969/j.issn.1001-7216.2010.06.017 .

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QTL Analysis on Stomatal Trait of Flag Leaf in Rice

水稻剑叶气孔性状QTL分析

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