Identification of a pleiotropic QTL cluster for Fusarium head blight resistance, spikelet compactness, grain number per spike and thousand-grain weight in common wheat
文献类型： 外文期刊
作者： Hu, Wenjing 1 ; Gao, Derong 1 ; Liao, Sen 1 ; Cheng, Shunhe 1 ; Jia, Jizeng 3 ; Xu, Weigang 4 ;
作者机构： 1.Lixiahe Inst Agr Sci, Minist Agr & Rural Affairs, Key Lab Wheat Biol & Genet Improvement Low & Middl, Yangzhou 225007, Jiangsu, Peoples R China
2.Henan Agr Univ, Collaborat Innovat Ctr Henan Grain Crops, Zhengzhou 450002, Henan, Peoples R China
3.Chinese Acad Agr Sci, Inst Crop Sci, Beijing 100081, Peoples R China
4.Henan Acad Agr Sci, Inst Crop Mol Breeding, Natl Engn Lab Wheat,Minist Educ,Henan Key Lab Whea, Key Lab Wheat Biol & Genet Breeding Cent Huanghuai, Zhengzhou 450002, Henan, Peoples R China
关键词： Fusarium graminearum; KASP marker; QTL cluster; Triticum aestivum
期刊名称：CROP JOURNAL （ 影响因子：6.6； 五年影响因子：6.5 ）
ISSN： 2095-5421
年卷期： 2023 年 11 卷 2 期
页码：
收录情况： SCI
摘要： Simultaneously improving Fusarium head blight (FHB) resistance and grain yield is challenging in wheat breeding. The correlations between spikelet compactness (SC), grain number per spike (GNS), thousand-grain weight (TGW) and FHB resistance remains unclear in common wheat. Identification of major quantitative trait loci (QTL) conferring FHB resistance and yield components, and development of breeder-friendly markers for the QTL are prerequisites for marker-assisted selection (MAS). Here, a recombinant inbred line (RIL) population derived from a cross between a resistant cultivar Yangmai 12 (YM12) and a susceptible cultivar Yanzhan 1 (YZ1) was used to map QTL for FHB resistance and yield components. A total of 22 QTL were identified; among these, six are likely to be new for corresponding traits. A QTL cluster (Qclu.yas-2D) for FHB type II resistance, SC, GNS, and TGW was detected on chromo-some 2D. Breeder-friendly kompetitive allele-specific PCR (KASP) markers flanking the interval of Qclu. yas-2D were developed and validated in a diverse panel of 166 wheat cultivars and advanced lines. The YM12 alleles of Qclu.yas-2D significantly increased FHB resistance, SC, and GNS but decreased TGW in the validation population. The KASP markers developed for Qclu.yas-2D have great potential for breeding high-yielding wheat cultivars with enhanced FHB resistance.(c) 2022 Crop Science Society of China and Institute of Crop Science, CAAS. Production and hosting by Elsevier B.V. on behalf of KeAi Communications Co., Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
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