中国水稻科学

中国水稻科学

• 研究简报 • 上一篇    下一篇

水稻旱育秧苗立枯病致病镰刀菌分离、鉴定及致病性测定

高同春1,2; 叶钟音1; 王 梅2; 马严明2   

  1. 1南京农业大学 植物保护学院, 江苏 南京 210095； 2 安徽省农业科学院 植物保护研究所，安徽 合肥 230031
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2001-10-10 发布日期:2001-10-10

Identification and Pathogenicity Test of Pathogenic Fusarium of Rice Blight

GAO Tong-chun 1; 2; YE Zhong-yin 1; WANG Mei 2; MA Yan-ming 2   

  1. (1 College of Plant Protection; Nanjing Agricultural University; Nanjing 210095; China; 2Institute of Plant Protection; Anhui Academy of Agricultural Sciences; Hefei 230031, China)
  • Received:1900-01-01 Revised:1900-01-01 Online:2001-10-10 Published:2001-10-10

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摘要： 对345份采自安徽凤阳、蒙城、定远等地的水稻立枯病病样进行了分离，获得了58个致病的镰刀菌单孢株系，经鉴定为6个种，其中以串珠镰刀菌比例最大，占60.35%，砖红镰刀菌、尖孢镰刀菌、茄类镰刀菌、半裸镰刀菌、多隔镰刀菌所占比例分别为10.35%、13.79%、5.17%、6.90%和3.45%。致病力测定结果表明串珠镰刀菌的致病力最强；病菌在根中部和根基部的侵染发病率高于根尖和茎基部。不同培养液培养镰刀菌的滤液可以引起相同或更严重的症状。

关键词: 水稻, 立枯病, 镰刀菌, 致病力

Abstract: Fifty eight single spore isolations, from 354 samples of rice seedling blight in dry raised nursery, have been identified as six species of Fusarium according to their asexual stages. Isolations of F. moniliforme were majority,with the rate of 60.35%; the isolations of F. solani, F.oxysporum, F. semitectum, F.lateritium and F. decemcellulare were 5 17%, 13 79%, 6.90%, 10.35% and 3.45%, respectively.The result of inoculation showed that F.moniliforme had the highest pathogenicity. The percentage infected by pathogenic Fusarium from middle and base of root was higher than that from tip of root and base of stem. 6-8 day seedling of rice was the most sensitive to pathogenic Fusarium. The rice seedlings treated with filtrations of different liquids inoculating Fusarium could produce the same or more serious symptoms of blight.

Key words: rice, blight, Fusarium, pathogenicity