Quantitative trait loci for leaf chlorophyll fluorescence traits in wheat
文献类型: 外文期刊
第一作者: Zhang, Zheng-Bin
作者: Zhang, Zheng-Bin;Xu, Ping;Jia, Ji-Zeng;Zhou, Rong-Hua
作者机构:
关键词: QTLs;Leaf Chlorophyll Fluorescence Trait;Wheat
期刊名称:AUSTRALIAN JOURNAL OF CROP SCIENCE ( 影响因子:1.632; 五年影响因子:1.686 )
ISSN: 1835-2693
年卷期: 2010 年 4 卷 8 期
页码:
收录情况: SCI
摘要: Chlorophyll fluorescence is closely related to photosystem II (PS II), and chlorophyll fluorescence analysis has become one of the most powerful and widely used techniques that are available to plant physiologists and ecophysiologists. In this article we report the genetic study of leaf chlorophyll fluorescence traits in wheat. 114 wheat recombinant inbred lines (RILs) derived from W-7984xOpata85 were used as samples and QTLs of chlorophyll relative content (C), minimum fluorescence yield of PS II (F-o), maximum fluorescence yield of PS II (F-m), variable chlorophyll fluorescence yield (F-v), maximum quantum yield of PS II (F-v /F-m), and time of achieving maximum fluorescence yield (T-m) were obtained and analyzed. Five QTLs associated with C are detected on 4B, 4D, 6D and 7A, and the relative additive contribution of locus C6D and C7A is 15.60% and 11.04%, respectively; two pairs of interaction loci affecting C are found. Three QTLs are identified for F-o on 1A, 1B and 1D. One QTL for F-v is mapped on 7D, and it is found that five pairs of interaction QTLs influencing F-v. One loci significantly influencing F-m is on chromosome 5A, which acts as a major effect gene and can explain 20.69% of total phenotypic variation for F-m, and closely links with the RFLP marker Xcdo749. There are six QTLs controlling T-m mapped on 2D, 3D, 4A, 4D, 5D and 7D; one pair of interaction QTLs influencing T-m exists. Three pairs of interaction QTLs influence F-v/F-m, showing a general epistatic contribution of 94.62%. The identified QTL markers for chlorophyll fluorescence traits will be useful for understanding the genetics background and marker-assisted selection in wheat photosynthetic traits improving.
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