Journal article
Characterization and molecular mapping of stripe rust resistance gene Yr61 in winter wheat cultivar Pindong 34
Theoretical and applied genetics, Vol.127(11), pp.2349-2358
11/2014
Handle:
https://hdl.handle.net/2376/113626
PMID: 25163935
Abstract
We report a new stripe rust resistance gene on chromosome 7AS in wheat and molecular markers useful for transferring it to other wheat genotypes. Several new races of the stripe rust pathogen have established throughout the wheat growing regions of China in recent years. These new races are virulent to most of the designated seedling resistance genes limiting the resistance sources. It is necessary to identify new genes for diversification and for pyramiding different resistance genes in order to achieve more durable resistance. We report here the identification of a new resistance gene, designated as Yr61, in Chinese wheat cultivar Pindong 34. A mapping population of 208 F2 plants and 128 derived F2:3 lines in a cross between Mingxian 169 and Pindong 34 was evaluated for seedling stripe rust response. A genetic map consisting of eight resistance gene analog polymorphism (RGAP), two sequence-tagged site (STS) and four simple sequence repeat (SSR) markers was constructed. Yr61 was located on the short arm of chromosome 7A and flanked by RGAP markers Xwgp5467 and Xwgp5765 about 1.9 and 3.9 cM in distance, which were successfully converted into STS markers STS5467 and STS5765b, respectively. The flanking STS markers could be used for marker-assisted selection of Yr61 in breeding programs.
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Details
- Title
- Characterization and molecular mapping of stripe rust resistance gene Yr61 in winter wheat cultivar Pindong 34
- Creators
- X L Zhou - State Key Laboratory of Crop Stress Biology in Arid Areas and College of Life Sciences, Northwest A&F University, Yangling, 712100, Shaanxi, ChinaD J HanX M ChenH L GouS J GuoL RongQ L WangL L HuangZ S Kang
- Publication Details
- Theoretical and applied genetics, Vol.127(11), pp.2349-2358
- Academic Unit
- Plant Pathology, Department of
- Publisher
- Germany
- Identifiers
- 99900547674001842
- Language
- English
- Resource Type
- Journal article