摘要
通过大豆疫霉根腐病发生的田间调查、从病株和土壤中分离大豆疫霉菌 ,对大豆疫霉菌在我国的分布进行了研究 ,结果表明 ,除东北地区外 ,我国黄淮流域和长江流域也存在大豆疫霉菌。应用 13个鉴别寄主 ,对来自不同地区的 83个大豆疫霉菌分离物进行毒力鉴定 ,证明我国大豆疫霉菌存在丰富的毒力多样性。与植株分离物相比 ,土壤分离物的毒力多样性程度更高。对不同地区来源分离物的毒力组成比较表明 ,长江流域分离物的毒力多样性最丰富 ,其次是黄淮流域 ,而东北地区分离物的毒力组成相对简单。
By investigating on occurrence of Phytophthora root rot (PRR) in fields and isolating P. sojae from di-seased plants and soils, the distribution of P. sojae in China was surveyed. In addition to northeast region, P. sojae existed in Huanghe-Huaihe basin and Yangtse basin too. Eighty three isolates of P. sojae isolated from different areas were identified on virulence using 13 differential soybean cultivars, abundant virulence diversity was found in P. sojae. The greater diversity in virulence of P. sojae was in isolates from soil than from plants. And the greatest virulence diversity of P. sojae was found in Yangtse basin.
出处
《中国农业科学》
CAS
CSCD
北大核心
2003年第7期793-799,共7页
Scientia Agricultura Sinica
基金
国家自然科学基金资助项目 (39970 497)
国家"十五"科技攻关计划资助项目 (2 0 0 1BA5 0 9B0 6 0 8)
