您好，欢迎访问江西省农业科学院 机构知识库！

Searching for Germplasm Resistant to Sheath Blight from the USDA Rice Core Collection

文献类型： 外文期刊

作者： Jia, Limeng 2 ; Yan, Wengui 1 ; Agrama, Hesham A. 3 ; Yeater, Kathleen 4 ; Li, Xiaobai 1 ; Hu, Biaolin 1 ; Moldenhauer 1 ;

作者机构： 1.USDA ARS, Dale Bumpers Natl Rice Res Ctr, Stuttgart, AR 72160 USA

2.Zhejiang Univ, State Key Lab Rice Biol, IAEA Collaborating Ctr, Hangzhou 310003, Zhejiang, Peoples R China

3.Univ Arkansas, Rice Res & Extens Ctr, Stuttgart, AR USA

4.USDA ARS, So Plains Area, College Stn, TX USA

5.Jiangxi Acad Agr Sci, Rice Res Inst, Nanchang, Peoples R China

关键词： germplasm resistant;USDA rice core collection

期刊名称：CROP SCIENCE （ 影响因子：2.319； 五年影响因子：2.631 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： Sheath blight, caused by the fungal pathogen Rhizoctonia solani, is one of the most important and widely distributed diseases capable of infesting numerous crops including rice (Oryza sativa L.). Resistant germplasm with wide variation is essential for controlling this disease via breeding efforts, and genetic background helps design breeding strategies. We used the micro-chamber method to evaluate the USDA rice core collection, including 1794 accessions from 114 countries, for sheath blight resistance. Seventy-two molecular markers were used for genotyping. Compared with 'Jasmine 85', which has been recognized as one of the most resistant germplasm accessions, 52 accessions were significantly more resistant at the 5% level of probability, and of these 17 were more resistant at the 1% level of probability. The resistant accessions originated from 26 countries in nine geographic regions and are diversified for 13 phenotypic characteristics. The resistant accessions all belonged to the cultivated species O. sativa. Genetic analysis using 72 molecular markers revealed that 45 resistant accessions (87%) were indica type, which were further classified in two groups. Three accessions were identified as aus, two as aromatic, and one each as temperate japonica and tropical japonica. Breeders could use these findings to choose sheath blight resistant accessions for cultivar improvement.

  • 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：江西省农业科学院

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