摘要
【目的】系统剖析小麦株高与穗长及各茎节间长的遗传关系。【方法】利用包含有110个株系的ITMI重组自交系群体,和已构建的高密度遗传连锁图谱对小麦株高、穗长及各茎节间长进行了QTL定位。【结果】两个参试环境共检测到株高相关位点10个,穗长相关位点14个,倒一节间长相关位点19个,倒二节间长相关位点15个,倒三节间长相关位点17个,倒四节间长相关位点14个,倒五节间长相关位点22个,茎节数相关位点14个。所有位点中,2个株高相关位点,4个穗长相关位点,4个倒五节间长相关位点,4个倒四节间长相关位点,2个倒三节间长相关位点,1个倒二节间长相关位点,2个倒一节间长相关位点,2个茎节数相关位点在两个环境中都被检测到。【结论】共挖掘到125个与株高及各茎节间长相关的QTL位点。
【Objective】 To system dissect genetic basic of plant height,spike length,and internode length.【Method】 An ITMI recombinant intercross lines population contain 110 lines were used to perform QTL analysis based on a high density genetic map.【Results】A total of 125 QTLs for objective traits were identified.For these loci,10 of them were identified for plant height,14 were identified for spike length,19 were identified for the first internode length from the top(IL1),15 were identified for the second internode length from the top(IL2),17 were identified for the third internode length from the top(IL3),14 were identified for the fourth internode length from the top(IL4),22 were identified for the fifth internode length from the top(IL5),14 were identified for internode number.In addition,2 plant height related loci,4 spike length related loci,2 IL1 related loci,1 IL2 related locus,2 IL3 related loci,4 IL4 related loci,4 IL5 related loci,and 2 internode number related loci were expressed in both investigated environments.【Conclusion】Taken together,all of the 125 QTLs can help to breed out commercial variety with suitable plant height.
出处
《四川农业大学学报》
CSCD
北大核心
2017年第4期465-475,共11页
Journal of Sichuan Agricultural University
基金
西南科技大学博士基金项目(13ZX7155)
国家自然科学基金项目(31601582)
关键词
小麦
株高
穗长
茎节间长
QTL
wheat
plant height
spike length
internode length
QTL
