| 2000～2003年陕西省小麦条锈菌群体结构动态分析 |
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| 引用本文： | 李强,王保通,李高保,井金学,王芳,赵辉.2000～2003年陕西省小麦条锈菌群体结构动态分析[J].西北农林科技大学学报(社会科学版),2004,32(Z1):65-69. |
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| 作者姓名： | 李强 王保通 李高保 井金学 王芳 赵辉 |
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| 作者单位： | 1. 西北农林科技大学,植物保护学院,陕西,杨凌,712100
2. 眉县农技推广中心,陕西,眉县,722300 |
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| 基金项目： | 国家科技攻关项目"小麦病虫害综合防治技术研究"(2001BA509B03);陕西省科技攻关项目"小麦条锈病综合防治技术研究"(2003K02-G10-01) |
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| 摘 要： | 对2000~2003年陕西省小麦条锈菌群体结构动态研究结果表明,2000年条中31号居各小种及类型首位,出现频率为22.36%,出现频率随后呈逐年下降趋势。2001~2003年条中32号出现频率均居第一位,出现频率分别为46.78%,66.23%,46.34%,分布范围广,致病性强,是造成陕西省小麦条锈病发生流行的主要优势小种;其次为水源11 14,水源11-4.分别居第二、三位。条中18,19,22,23,25,26,27,28号小种出现频率均较低,而且有逐年下降趋势。毒力频率分析表明,Yr9,Yr3b+4b,Yrsu等抗性基因已经失效。新育成小麦品种(系)对条中31号,32号,水源11 14,太白4的感病品种百分率分别为62.6％,60.9%,56.3%和35.9%。
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| 关 键 词： | 小麦 条锈菌 群体结构动态 陕西省 |
| 文章编号： | 1671-9387(2004)S0-0065-05 |
| 修稿时间： | 2004年5月28日 |
Analysis of pathotypical structure of wheat stripe rust in Shaanxi Province during 2000-2003 |
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| LI Qiang,WANG Bao-tong,LI Gao-bao,JING Jin-xue,WANG Fang,ZHAO Hui.Analysis of pathotypical structure of wheat stripe rust in Shaanxi Province during 2000-2003[J].Journal of Northwest Sci-Tech Univ of Agr and,2004,32(Z1):65-69. |
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| Authors: | LI Qiang WANG Bao-tong LI Gao-bao JING Jin-xue WANG Fang ZHAO Hui |
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| Institution: | (College of Plant Protection, Northwesten A & F University,Yangling,Shuanxi 712100,china; Mer Counly Agriculture Technology Center,Meixian Coumty,Shaanxi 722300, China) |
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| Abstract: | Studies on pathotypical structure of stripe rust in Shaanxi province during 2000-2003 showed that,CY 31 was the first dominant race and the frequency was 46. 34% in 2000. During 2001-2003,CY 32 had become the first dominant race and the frequency was 46. 78%,66. 23%,46. 34% respectively,which was the most prevalent race in recent years. Su 11-14 and Su 11-4 pathotypes were the second and third dominant races. CY 18,CY 19,CY 22,CY 23,CY 25,CY 26,CY 27,CY 28 had low frequencies and had a declining tendency. The resistant genes of Yr9, Yr3b+4b, Yrsu had lost their efficacy.The per cents of wheat cultivars susceptible to CY 31,CY 32,Su 11-14 and Taibai 4 was 62. 6%,60. 9%,56. 3% and 35. 9% respectively. |
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| Keywords: | wheat Puccinia strriformrs West pathotypical structure Shaanxi province |
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