文献类型： 外文期刊
作者： Zhao, Chunhua 1 ; Zhang, Na 2 ; Wu, Yongzhen 1 ; Sun, Han 1 ; Liu, Cheng 3 ; Fan, Xiaoli 4 ; Yan, Xuemei 5 ; Xu, Hongxing 6 ;
作者机构： 1.Ludong Univ, Coll Agr, Yantai 264025, Shandong, Peoples R China
2.Chinese Acad Sci, Inst Genet & Dev Biol, Cte Agr Resources Res, Shijiazhuang 050022, Hebei, Peoples R China
3.Shandong Acad Agr Sci, Crop Res Inst, Jinan 250100, Shandong, Peoples R China
4.Chinese Acad Sci, Chengdu Inst Biol, Chengdu 610041, Sichuan, Peoples R China
5.Anqiu Municipal Burean Agr, Anqiu 262100, Peoples R China
6.Henan Univ, Dept Biol, Inst Plant Stress Biol, State Key Lab Cotton Biol, Kaifeng 475001, Peoples R China
关键词： Quantitative trait locus; Recombinant inbred line; Spike-layer uniformity; Wheat; Yield
期刊名称：BMC GENETICS （ 影响因子：2.797； 五年影响因子：3.263 ）
ISSN： 1471-2156
年卷期： 2019 年 20 卷
页码：
收录情况： SCI
摘要： BackgroundCommon wheat (Triticum aestivum L.) is one of the most important food crops worldwide. Wheat spike-layer uniformity related traits (SLURTs) were complex traits that directly affect yield potential and appearance. In this study, quantitative trait locus (QTL) for five SLURTs among inter-tillers were first documented using a recombinant inbred line (RIL) mapping population derived from a cross between Kenong9204 and Jing411 (represented by KJ-RILs). Genetic relationships between SLURTs and yield were characterized in detail.ResultsThe trait phenotypic performances for the 188 KJ-RILs and their parents were evaluated in eight different environments. The genetic data included in a high-density genetic map derived from the Affymetrix 660K SNP Array and the corresponding genotypes in each lines. Of 99 putative additive QTL 11 were stable across environments and 57 showed significant additive-by-environment interaction effects. These QTL individually explained 1.05-39.62% of the phenotypic variance, with log of odds (LOD) values ranging from 2.00 to 34.01. Genetic relationships between SLURTs and yield indicated that plants with slight uneven spike spatial distribution should be an ideotype for super high-yield in wheat.ConclusionsThe present study will provide assistance in understanding the genetic relationships between SLURTs and yield potential. The 11 stable QTL for SLURTs identified herein may facilitate breeding new wheat varieties with scientifically reasonable spike-layer distribution by marker assisted selection.
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