| 1993年全国小麦秆锈菌种群动态分析 |
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| 引用本文： | 姚平,曹远银,刘维志,吴友三.1993年全国小麦秆锈菌种群动态分析[J].植物保护学报,1995,22(4):303-308. |
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| 作者姓名： | 姚平 曹远银 刘维志 吴友三 |
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| 作者单位： | 沈阳农业大学植物免疫室，沈阳农业大学植物免疫室，沈阳农业大学植物免疫室，沈阳农业大学植物免疫室 沈阳 110161，沈阳 110161，沈阳 110161，沈阳 110161 |
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| 基金项目： | 国家“八五”攻关项目,全国小麦病虫害综合防治技术研究(85-10-01) |
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| 摘 要： | １９９３年我国小麦秆锈病发生较轻，从８个省１８个区县中的４７个品种上采集到的９５个标样中分离到菌株３３６个，鉴定出２１Ｃ３ＣＫＲ、２１Ｃ３ＣＫＨ、２１Ｃ３ＣＴＲ、２１Ｃ３ＣＴＨ、２１Ｃ３ＣＦＲ、２１Ｃ３ＣＦＨ、３４Ｃ１ＭＫＲ、３４Ｃ１ＭＫＨ和３４Ｃ２ＭＫＲ等９个致病类型；２１Ｃ３ＣＫＲ的出现频率为６５．２％，居于首位，２１Ｃ３ＣＤＨ为１４．５％，２１Ｃ３ＣＴＲ为１０．７％，２１Ｃ３ＣＦＲ为４．２％
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| 关 键 词： | 小麦 秆锈菌 致病类型 抗性基因 毒力频率 |
RACE DYNAMIC OF PUCCINIA GRAMINIS F. SP. TRITICI IN CHINA IN 1993 |
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| Yao Ping,Cao Yuanyin,Liu Weizhi and Wu Yousan.RACE DYNAMIC OF PUCCINIA GRAMINIS F. SP. TRITICI IN CHINA IN 1993[J].Acta Phytophylacica Sinica,1995,22(4):303-308. |
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| Authors: | Yao Ping Cao Yuanyin Liu Weizhi and Wu Yousan |
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| Institution: | Laboratory of Plant Immunology, Shenyang Agricultural University, Shenyang,Laboratory of Plant Immunology, Shenyang Agricultural University, Shenyang,Laboratory of Plant Immunology, Shenyang Agricultural University, Shenyang and Laboratory of Plant Immunology, Shenyang Agricultural University, Shenyang |
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| Abstract: | The incidence of wheat stem rust was not severe in China in 1993 except partial regions, such as in Yuanmou County of Yunnan Province and in part of Sichuan Province where moderate epidemics occured. All of the 336 isolates for tests were obtained from 95 uredial samples collected from 47 different wheat cultivars distributed in 18 counties of 8 provinces. These isolates were identified and categorized into 9 patho-types, ie. 21C3CKR, 21C3CKH, 21C3CTR, 21C3CTH, 21C3CFR, 21C3CFH, 34C1MKR, 34C1MKH and 34C2MKR. The 21C3CKR was dominant race with a frequency of 62. 5%. Sequentially following it were 21C3CKH (45. 5%),21C3CTR (10. 7%),21C3CFR (4. 2%) ,21C3CTH(1. 2%). The frequency of rest four pathotypes was no more than 0. 9%. The isolates virulent to Sr11 were firstly detected in China. The virulence frequencies of all 336 isolates on 41 Single Sr gene lines was tested. Results showed that the virulence frequencies on Sr5,10,11,15,31,33,35,37 and 38 were below 19. 8%,on Sr11 was 14. 6%,and on Sr24,32,GT and Sr Wld-1 were between 40% -58. 2%. No virulent isolate was found on Sr9e, 21 and 30 while the frequencies of virulence to 25 single Sr gene lines was above 67%. |
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| Keywords: | wheat stem rust pathotypes resistance genes virulence frequencies |
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