| Postulation of Seedling Resistance Genes in 20 Wheat Cultivars to Yellow Rust （ Puccinia striiformis f. sp. triticl） |
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| 作者姓名： | FENG Jing ZHANG Zhen-yu LIN Rui-ming XU Shi-chang |
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| 作者单位： | State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection （IPP）, Chinese Academy of Agricultural Sciences （CAAS）, Beijing 100193, P.R.China |
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| 基金项目： | This study was supported by the project from the National Basic Research Program of China 2006CB100200)，China Postdoctoral Science Foundation，the National Natural Science Foundation of China，the National Key Technology R&D Program of China(2006BAD08A05 |
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| 摘 要： | The gene postulation, cluster analysis and pedigree analysis of 20 wheat cultivars to 28 physiological races of yellow rust （Puccinia striiformis） were conducted under greenhouse conditions, The spectrum of their resistance were compared each other. None of the 20 cultivars were resistant to all the test pathogens. The cultivars containing resistance genes Yr5 and Yr24 were not find and genes Yr8, Yrl9 and Yr27 could not be postulated from cultivars tested due to the susceptibility to all isolates used. A total of 6 probale seedling yellow rust resistance genes or gene combinations （Yrl, Yr2, Yr2 ＋ YrHVII, Yr3 ＋ unknown, Yr3 ＋ Yr4, YrAlba） were postulated in the wheat cultivars （Atou, Flanders, Maris Huntsman, Bouquet, Holdfast, Elite Lepeuple, and Vilmorin 27）. The gene combination Yr2＋YrHVII with the highest frequency （35%） was present in 7 cultivars. The Yr genes present in some wheat cultivars could not be postulated because of non-matching virulence combinations with any of known genes. Cluster result showed that Yr2 and Yr3 are the most important genes in the cultivars. The 13 cultivars are believed to have the pedigree of Noe, which was selected from South Russian wheat. These results will be useful for wheat breeding and provide information about genetic control of wheat yellow rust.
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| 关 键 词： | 小麦条锈病 小麦品种 抗性基因 苗期 条锈菌 抗条锈病基因 基因推导 温室条件 |
| 收稿时间： | 12 January 2009 |
Postulation of Seedling Resistance Genes in 20 Wheat Cultivars to Yellow Rust(Puccinia striiformis f.sp.triticl) |
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| FENG Jing,ZHANG,Zhen-yu LIN,Rui-ming XU,Shi-chang.Postulation of Seedling Resistance Genes in 20 Wheat Cultivars to Yellow Rust(Puccinia striiformis f.sp.triticl)[J].Agricultural Sciences in China,2009,8(12):1429-1439. |
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| Authors: | FENG Jing ZHANG Zhen-yu LIN Rui-ming XU Shi-chang |
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| Institution: | 1. College of Life Science, Shanxi University, Taiyuan 030006, Shanxi, China;2. The Shanxi Province Key Laboratory of Crop Genetics and Gene Improvement, Institute of Crop Science, Shanxi Academy of Agricultural Sciences, Taiyuan 030031, Shanxi, China;3. Department of Plant and Soil Sciences, Oklahoma State University, Stillwater, OK 74078, USA;4. The Applied Plant Genomics Laboratory of Crop Genomics and Bioinformatics Centre, Nanjing Agricultural University, Nanjing 210095, Jiangsu, China;5. Institute of Wheat Research, Shanxi Academy of Agricultural Sciences, Linfen 041000, Shanxi, China |
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| Abstract: | The gene postulation, cluster analysis and pedigree analysis of 20 wheat cultivars to 28 physiological races of yellow rust (Puccinia striiformis) were conducted under greenhouse conditions. The spectrum of their resistance were compared each other. None of the 20 cultivars were resistant to all the test pathogens. The cultivars containing resistance genes Yr5 and Yr24 were not find and genes Yr8, Yr19 and Yr27 could not be postulated from cultivars tested due to the susceptibility to all isolates used. A total of 6 probale seedling yellow rust resistance genes or gene combinations (Yr1, Yr2, Yr2 + YrHVII, Yr3 + unknown, Yr3 + Yr4, YrAlba) were postulated in the wheat cultivars (Atou, Flanders, Maris Huntsman, Bouquet, Holdfast, Elite Lepeuple, and Vilmorin 27). The gene combination Yr2+YrHVII with the highest frequency (35%) was present in 7 cultivars. The Yr genes present in some wheat cultivars could not be postulated because of non-matching virulence combinations with any of known genes. Cluster result showed that Yr2 and Yr3 are the most important genes in the cultivars. The 13 cultivars are believed to have the pedigree of Noe, which was selected from South Russian wheat. These results will be useful for wheat breeding and provide information about genetic control of wheat yellow rust. |
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| Keywords: | wheat Puccinia striiformis gene postulation cluster analysis |
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