Resolving a QTL complex for height, heading, and grain yield on chromosome 3A in bread wheat.
Resolving a QTL complex for height, heading, and grain yield on chromosome 3A in bread wheat.
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DOI：
10.1093/jxb/erab058
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发表时间：
2021-04-02
影响因子：
6.9
通讯作者：
Griffiths S
中科院分区：
文献类型：
--
作者：
Martinez AF;Lister C;Freeman S;Ma J;Berry S;Wingen L;Griffiths S
小麦的株高（Ht）、抽穗期（Hd）和籽粒产量（戈伊）之间存在相关关系。独立操纵每一个是重要的适应和性能。在Avalon×Cadenza群体中，所有三个QTL都位于3A染色体上，其中Cadenza增加了Ht，Hd和戈伊。我们问，如果这些是连锁或多效性的影响，使用重组系，并表明，Ht和Hd的影响是独立的。中国春天相当于新定义的Ht区间包含一个基因簇，参与细胞壁生长，并显示高水平的差异转录表达。与参考基因组相比，Hd基因座更大且重排，但FT 2（开花基因座T2）特别令人感兴趣。Hd效应不受光周期和春化作用的影响，但表现出季节性的基因型×环境互作。在重复的田间实验中，对戈伊进行表型分析。戈伊与晚Hd的华彩纹等位基因最相关，支持使用相同品系的生理研究，提出该位点的“晚”等位基因增加穗育性和粒数（GN）。这项工作将株高与抽穗和产量分离，并表明小麦中极少数有效的戈伊QTL之一可能是由物候变异介导的。只有3个有效的小麦产量QTL。在这里，他们中的一个被基因解剖。这表明产量效应的生理基础可能是物候。
Crop height (Ht), heading date (Hd), and grain yield (GY) are inter-related in wheat. Independent manipulation of each is important for adaptation and performance. Validated quantitative trait loci (QTLs) for all three co-locate on chromosome 3A in the Avalon×Cadenza population, with increased Ht, Hd, and GY contributed by Cadenza. We asked if these are linked or pleiotropic effects using recombinant lines, and showed that Ht and Hd effects are independent. The Chinese Spring equivalent to the newly defined Ht interval contained a gene cluster involved in cell wall growth and displaying high levels of differential transcript expression. The Hd locus is larger and rearranged compared with the reference genome, but FT2 (Flowering Locus T2) is of particular interest. The Hd effect acted independently of photoperiod and vernalization, but did exhibit seasonal genotype×environment interaction. Recombinants were phenotyped for GY in replicated field experiments. GY was most associated with Cadenza alleles for later Hd, supporting physiological studies using the same lines proposing that ‘late’ alleles at this locus increase spike fertility and grain number (GN). The work has uncoupled height from heading and yield, and shown that one of very few validated GY QTLs in wheat is probably mediated by phenological variation. There are only three validated wheat yield QTLs. Here, one of them was genetically dissected. This showed that the physiological basis of the yield effect is likely to be phenological.
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DOI：
10.1007/s11032-014-0034-2
发表时间：
2014
期刊：
Molecular breeding : new strategies in plant improvement
影响因子：
--
作者：
Kiss T;Balla K;Veisz O;Láng L;Bedő Z;Griffiths S;Isaac P;Karsai I
通讯作者：
Karsai I
影响因子：
5.4
作者：
Wingen, Luzie U.;Orford, Simon;Goram, Richard;Leverington-Waite, Michelle;Bilham, Lorelei;Patsiou, Theofania S.;Ambrose, Mike;Dicks, Jo;Griffiths, Simon
通讯作者：
Griffiths, Simon
影响因子：
2
作者：
Miralles, DJ;Slafer, GA
通讯作者：
Slafer, GA
DOI：
10.1093/bioinformatics/btv069
发表时间：
2015-06-15
期刊：
Bioinformatics (Oxford, England)
影响因子：
--
作者：
Ramirez-Gonzalez RH;Uauy C;Caccamo M
通讯作者：
Caccamo M
影响因子：
5.3
作者：
Farré A;Sayers L;Leverington-Waite M;Goram R;Orford S;Wingen L;Mumford C;Griffiths S
通讯作者：
Griffiths S