Postulation of seedling leaf rust resistance genes in 84 Chinese winter wheat cultivars

doi:10.1016/S2095-3119(14)61002-9

CORC > 中国农业科学院 > 植物保护研究所

	Postulation of seedling leaf rust resistance genes in 84 Chinese winter wheat cultivars
	Ren Xiaoli; Liu Taiguo; Liu Bo; Gao Li; Chen Wanquan
刊名	Journal of Integrative Agriculture
	2015
卷号	14 期号:10 页码:1992-2001
关键词	gene postulation molecular marker Puccinia triticina wheat leaf rust
ISSN号	2095-3119
DOI	10.1016/S2095-3119(14)61002-9
英文摘要	Wheat leaf rust (caused by Puccinia triticina) is one of the most important fungal diseases in China. There are tens of winter wheat cultivars which are approved to be released by the government at a national level and more than 100 wheat cultivars at the provincial level. But there is no information about leaf rust (Lr) genes in these cultivars, which makes it difficult for farmers and breeders to select which cultivars they should plant in their fields and use in their breeding programs. The objective of this paper was to identify the leaf rust resistant genes at seedling stage present in the 84 commercial wheat cultivars from China that have been released in the past few years. A set of 20 near isogenic lines with Thatcher background and 6 lines with known Lr genes were used to test the virulence of 12 races of P. triticina (Pt). By comparing the infection types (ITs) produced on the 84 cultivars by the 12 Pt races with the ITs on the differential sets, the Lr genes were postulated. In addition, 8 molecular markers of Lr genes such as Lr9, Lr10, Lr19, Lr20, Lr21, Lr24, Lr26 and Lr29, which are closely linked to or co-segregated with the Lr gene, were used for further validation of the genes in the 84 Chinese winter wheat cultivars. Twelve Lr genes, including Lr1, Lr3, (Lr3bg), (Lr3ka), Lr11, Lr13, Lr14a, Lr16, Lr26, Lr27, Lr30 and Lr31 were postulated to be present either singly or in combinations in these Chinese wheat cultivars. Lr3 and Lr26 were detected most often in the tested cultivars, with frequencies of 51.2 and 38.1%, respectively. No wheat Lr genes were detected in 16 cultivars, and 4 cultivars may carry unknown Lr genes other than those used in this study. Lr9, Lr20, Lr21, Lr24, Lr25 and Lr29 were not present in any of the 84 tested accessions.
学科主题	农作物
语种	中文
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/11071]
专题	植物保护研究所
作者单位	Institute of Plant Protection, Chinese Academy of Agricultural Sciences, State Key Laboratory for Biology of Plant Diseases and Insect Pests, Beijing, 100193
推荐引用方式 GB/T 7714	Ren Xiaoli,Liu Taiguo,Liu Bo,et al. Postulation of seedling leaf rust resistance genes in 84 Chinese winter wheat cultivars[J]. Journal of Integrative Agriculture,2015,14(10):1992-2001.
APA	Ren Xiaoli,Liu Taiguo,Liu Bo,Gao Li,&Chen Wanquan.(2015).Postulation of seedling leaf rust resistance genes in 84 Chinese winter wheat cultivars.Journal of Integrative Agriculture,14(10),1992-2001.
MLA	Ren Xiaoli,et al."Postulation of seedling leaf rust resistance genes in 84 Chinese winter wheat cultivars".Journal of Integrative Agriculture 14.10(2015):1992-2001.