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。
To understand the genetic mechanism of stoma related traits,an F10population 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 1,4,7and 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 4and 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 5,7and 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 4controlling stomatal density was overlapped with the QTL of photosynthetic rate which was detected before.
出处
《中国水稻科学》
CAS
CSCD
北大核心
2010年第6期659-662,共4页
Chinese Journal of Rice Science
基金
国家自然科学基金资助项目(30971845)
关键词
水稻
数量性状基因座
气孔密度
气孔长度
气孔宽度
遗传学
rice
quantitative trait locus
stomatal density
stomatal length
stomatal width
genetics
