| 蜡质芽孢杆菌R2防治水稻纹枯病研究 |
| |
| 引用本文： | 李华荣,肖建国.蜡质芽孢杆菌R2防治水稻纹枯病研究[J].植物病理学报,1993,23(2):101-104. |
| |
| 作者姓名： | 李华荣 肖建国 |
| |
| 作者单位： | 西南农业大学植保系 |
| |
| 摘 要： | 选用我们从稻株上分离筛选的能促进水稻生长发育的蜡质芽孢杆菌(Bacillus cereus)R2号菌株,分别在室内和田间测定其对稻纹枯病菌(Rhizoctonia solani AG-1)的拮抗性和防病效果。在PDBA平板上,R2对病菌菌丝生长的抑菌带可达10.9mm宽。在WA平板上可抑制病菌菌核萌发,R2菌量为4×106、2×107、2×109cfu/ml时,病菌菌核萌发菌丝指数分别较对照降低28.2%、39.7%、56.4%。用菌量为2×109cfu/ml的R2菌液处理人工接种病菌的离体稻叶,对纹枯病病斑扩展的控制效果为55.5%,随R2菌量降低,其控制效果相应递减。用菌量为4×107cfu/ml的R2菌液喷施田间人工接种病菌的稻株,对纹枯病的防效可达43.8%。
|
| 关 键 词： | 水稻 纹枯病 蜡质芽孢杆菌 防治 |
BIOLOGICAL CONTROL OF RICE SHEATH BLIGHT BY BACILLUS CEREUS R2 |
| |
| Li Huarong,Xiao Jianguo,Yan Siqi.BIOLOGICAL CONTROL OF RICE SHEATH BLIGHT BY BACILLUS CEREUS R2[J].Acta Phytopathologica Sinica,1993,23(2):101-104. |
| |
| Authors: | Li Huarong Xiao Jianguo Yan Siqi |
| |
| Institution: | Department of Plant Protection, Southwest Agricultural University |
| |
| Abstract: | The evaluation of antagonistic effect of Bacillus cereus R2 on Rhizocionia solani AG-1 has been made in our laboratory and in the field R2 was isolated from rice plants and demonstrated to have the ability of promoting growth and increasing Yield of rice. R2 intensely inhibits growth of mycelia of the pathogen on PDBA with an inhibitory zone of 10.9mm in width;it also suppresses germination of the sclerotia. A 43.8% relative control efficiency was obtained when 4×107 cfu/ml R2suspension was sprayed on plants previously inoculated with mycelia blocks of the pathogen, in comparision with the Rhizoctonia-inoculated but R2 unsprayed check. |
| |
| Keywords: | |
| 本文献已被 维普 等数据库收录！ |
| 点击此处可从《植物病理学报》浏览原始摘要信息 |
| 点击此处可从《植物病理学报》下载免费的PDF全文 |
|
