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Identification and characterization of QTL for spike morphological traits, plant height and heading date derived from the D genome of natural and resynthetic allohexaploid wheat

文献类型： 外文期刊

作者： Xu, Huanwen 1 ; Zhang, Runqi 1 ; Wang, Mingming 1 ; Li, Linghong 1 ; Yan, Lei 3 ; Wang, Zhen 1 ; Zhu, Jun 1 ; Chen, Xiyon 1 ;

作者机构： 1.China Agr Univ, Beijing Key Lab Crop Genet Improvement, State Key Lab Agrobiotechnol, Key Lab Crop Heterosis & Utilizat MOE, Beijing 100193, Peoples R China

2.Natl Plant Gene Res Ctr, Beijing 100193, Peoples R China

3.Chinese Acad Agr Sci CAAS, Inst Crop Sci ICS, Beijing 100081, Peoples R China

4.Hebei Acad Agr & Forestry Sci, Inst Cereal & Oil Crops, Hebei Crop Genet Breeding Lab, Shijiazhuang 050035, Hebei, Peoples R China

期刊名称：THEORETICAL AND APPLIED GENETICS （ 影响因子：5.699； 五年影响因子：5.565 ）

ISSN： 0040-5752

年卷期：

页码：

收录情况： SCI

摘要： Key message QHd.cau-7D.1 for heading date was delimited into the physical interval of approximately 17.38 Mb harboring three CONSTANS-like zinc finger genes. Spike morphological traits, plant height and heading date play important roles in yield improvement of wheat. To reveal the genetic factors that controlling spike morphological traits, plant height and heading date on the D genome, we conducted analysis of quantitative traits locus (QTL) using 198 F-7:8 recombinant inbred lines (RILs) derived from a cross between the common wheat TAA10 and resynthesized allohexaploid wheat XX329 with similar AABB genomes. A total of 23 environmentally stable QTL on the D sub-genome for spike length (SL), fertile spikelet number per spike (FSN), sterile spikelet number per spike (SSN), total spikelet number per spike (TSN), spike compactness (SC), plant height (PHT) and heading date (HD) were detected, among which eight appeared to be novel QTL. Furthermore, QHd.cau-7D.1 and QPht.cau-7D.2 shared identical confidence interval and were delimited into the physical interval of approximately 17.38 Mb with 145 annotated genes, including three CONSTANS-like zinc finger genes (TraesCS7D02G209000, TraesCS7D02G213000 and TraesCS7D02G220300). This study will help elucidate the molecular mechanism of the seven traits (SL, FSN, SSN, TSN, SC, PHT and HD) and provide a potentially valuable resource for genetic improvement.

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