Stripe rust resistance in Aegilops tauschii and its genetic analysis |
| |
| Authors: | Dengcai Liu Lianquan Zhang Zehong Yan Xiujin Lan Youliang Zheng |
| |
| Affiliation: | (1) Northwest Plateau Institute of Biology, Chinese Academy of Science, 810001 Qinghai, China;(2) Triticeae Research Institute, Sichuan Agricultural University, Wenjiang of Chengdu city, 611130 Sichuan, China;(3) Key Laboratory of Crop Genetic Resources and Improvement, Ministry of Education, Sichuan Agricultural University, Yaan, 625014 Sichuan, China |
| |
| Abstract: | Aegilops tauschii Coss., the D-genome progenitor of common wheat (Triticum aestivum L.) includes two subspecies, tauschii and strangulata (Eig) Tzvel. Subspecies tauschii has a wide geographic distribution spreading westwards to Turkey and eastwards to Afghanistan and China, while ssp. strangulata has a narrower distribution occurring only in two disjoined regions, southeastern Caspian Iran and Transcaucasia. A collection of 56 Ae. tauschii accessions was screened at adult stage against a mixture of pathotypes of stripe rust prevalent in the current wheat production in China. The results for three crop seasons indicated that among the 38 ssp. tauschii accessions, 37 were susceptible and only one was resistant, while all the 18 ssp. strangulata accessions were resistant. These results indicated that stripe rust resistance was related to taxonomic origin. Further genetic analysis revealed the resistance of stripe rust in ssp. strangulata accession AS2388 was conferred by a single dominant gene. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
