您好，欢迎访问山东省农业科学院文献资源数据库平台

Identification and Transfer of a New Powdery Mildew Resistance Gene PmCAHM from Landrace Changanhongmai into Common Wheat

文献类型： 外文期刊

作者： Chen, Xueyan 1 ; Wang, Yongfu 2 ; Han, Guohao 2 ; Fan, Jianzhong 2 ; Tan, Qingqing 1 ; Liu, Guoxia 1 ; Zhang, Hong 2 ; Wang, Yajuan 2 ;

作者机构： 1.Shandong Acad Agr Sci, Inst Crop Germplasm Resources, Jinan 250100, Peoples R China

2.Northwest A&F Univ, Coll Agron, State Key Lab Crop Stress Resistance & High Effici, Xianyang 712100, Peoples R China

3.Minist Educ, Engn Res Ctr Wheat Breeding, Xianyang 712100, Peoples R China

关键词： common wheat; powdery mildew; molecular marker; genetic population

期刊名称：AGRONOMY-BASEL （ 影响因子：3.7； 五年影响因子：4.0 ）

ISSN：

年卷期： 2024 年 14 卷 4 期

页码：

收录情况： SCI

摘要： Powdery mildew is a severe wheat disease that causes substantial yield losses in wheat production worldwide. The Chinese wheat landrace Changanhongmai (CAHM) exhibits high resistance to the physiological race E09 of powdery mildew. In this study, we characterized the powdery mildew resistance gene in CAHM, and developed molecular markers for wheat marker-assisted selection. To investigate the genetic characteristics of this resistant gene, we developed F-1 plants, F-2 generation population, and F-2:3 families by crossing CAHM with SY225 (Shaanyou '225' as susceptible male parent). Genetic analysis demonstrated that all F-1 plants were resistant to the disease, while the ratio of resistant to susceptible plants was 3: 1 in both the F-2 population and F-2:3 families, indicating that CAHM is inherited in a manner of a single dominant powdery mildew resistance gene, which was tentatively designated as PmCAHM. By using bulk segregation analysis, we constructed a genetic map encompassing Xgwm273, Xwmc626, Xgwm11, Xgwm18, Xgdm28, Xgpw7812, Xgpw5195, Xwmc694, and PmCAHM. Among these markers, Xgpw7812 and Xgpw5195 are flanking markers that are tightly linked to PmCAHM at a genetic distance of 2.5 cM and 8.4 cM, respectively. Furthermore, nullisomic-tetrasomic analysis revealed that PmCAHM is located on chromosome 1B. These results indicate that PmCAHM differs from the internationally recognized powdery mildew resistance genes in both location and source. In addition, a new germplasm/line NW1748 with stronger powdery mildew resistance and large grains was developed from the cross and backcross populations of Fengyou1718 (FY1718)/CAHM/5/FY 1718. Therefore, PmCAHM can serve as a novel powdery mildew resistance source for breeding of wheat by using NW1748 as the donor in the future.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：山东省农业科学院文献资源数据库平台

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台