Molecular mapping of stripe rust resistance gene YrH921 in a wheat introgression line H921‐11‐1,Journal of Phytopathology

当前位置： X-MOL 学术 › J. Phytopathol. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Molecular mapping of stripe rust resistance gene YrH921 in a wheat introgression line H921‐11‐1
Journal of Phytopathology ( IF 1.5 ) Pub Date : 2020-08-14 , DOI: 10.1111/jph.12945
Dong‐fang Ma _{1,

2} , Liling Jiang ₁ , Cai Sun _{2,

3} , Han Li ₂ , Lu Hou ₁ , Qingyun Guo ₁ , Qiurong Li ₁

Affiliation

Several novel stripe rust pathogen races emerging in the wheat‐planting regions of China in recent years were virulent to a majority of the designated wheat seedling resistance genes. Therefore, it is of great significance to continuously select more new and valuable materials for enriching resistant sources diversity, pyramiding different excellent resistance genes and achieving durable resistance. In this study, a resistance gene, temporarily designated as YrH921, was identified from wheat–Psathyrostachys huashanica introgression line H921‐11‐1. Two hybrid populations, 160 F₂ plants and corresponding derived F_2:3 families, of the two parents about Mingxian169 as female and H921‐11‐1 as male, were used to evaluate stripe rust resistance in seedling stage and as a mapping population. At last, a genetic map which comprises of four simple sequence repeat (SSR) markers and six expressed sequence tag (EST) markers was constructed. YrH921 was located on the long arm of chromosome 5A. Two closely linked EST‐STS markers (BF483937 and BF484913) were screened, and the genetic distance linked to YrH921 was 3.0 and 4.3 cM, respectively. There was great value in research and production if the two closest markers were effectively used for marker‐assisted selection of YrH921 in breeding.

更新日期：2020-08-14

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南

全部期刊列表>>