Identification of Stem Rust Resistance Genes in Triticum Wheat Cultivars and Evaluation of Their Resistance to Puccinia graminis f. sp. tritici
文献类型： 外文期刊
作者： Gao, Fu 1 ; Wu, Xianxin 1 ; Sun, Huiyan 1 ; Wang, Ziye 1 ; Chen, Si 3 ; Zou, Longmei 1 ; Yang, Jinjing 1 ; Wei, Yifan 1 ; Ni, Xinyu 1 ; Sun, Qian 1 ; Li, Tianya 1 ;
作者机构： 1.Shenyang Agr Univ, Coll Plant Protect, Shenyang 110866, Peoples R China
2.Liaoning Acad Agr Sci, Inst Agr Qual Stand & Testing Technol, Shenyang 110161, Peoples R China
3.Heilongjiang Acad Agr Sci, Inst Ind Crops, Harbin 150086, Peoples R China
关键词： wheat stem rust; Puccinia graminis f. sp. tritici; gene postulation; Sr gene
期刊名称：AGRICULTURE-BASEL （ 影响因子：3.6； 五年影响因子：3.6 ）
ISSN：
年卷期： 2024 年 14 卷 2 期
页码：
收录情况： SCI
摘要： Wheat stem rust, caused by the fungus Puccinia graminis f. sp. tritici (Pgt), poses a substantial threat to global wheat production. Utilizing stem rust resistance (Sr) genes represents an economically viable, effective, and environmentally friendly approach to disease control. In this study, gene postulation, molecular testing, and pedigree analysis were used to identify the presence of Sr genes in 45 wheat cultivars. In addition, the resistance of these cultivars was evaluated against two predominant Pgt races, 34MRGQM and 21C3CTHTM, at the adult-plant stage during 2021-2022. The results identify seven Sr genes (Sr31, Sr38, Sr30, SrTmp, Sr22, Sr19, and Sr5) within 35 wheat cultivars. Among these, 23 cultivars contained Sr31, whereas Sr5 and SrTmp were present in four cultivars each. Han 5316, Shimai 15, Shiyou 20, and Kenong 1006 exhibited the presence of Sr19, Sr22, Sr30, and Sr38, respectively. Molecular studies confirmed the absence of Sr25 and Sr26 in any of the wheat cultivars. During field evaluation, 37 (82.2%) and 39 (86.7%) wheat cultivars demonstrated resistance to races 34MRGQM and 21C3CTHTM, respectively. Moreover, 33 wheat cultivars (73.3%) exhibited resistance to all the tested races. These study findings will significantly contribute to future research in wheat pre-breeding and abiotic stress tolerance.
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