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Field Efficacy of Agricultural Antibiotic 702 against Rice Leaf Blast and Panicle Blast

查看全文 作　　者：Li [1]Xunhang;Tu [1]Xiaorong;Huang [1]Lin;Li [1]Hanguang;Tu [1]Guoquan 高影响力作者 机构地区：[1]College of Biology Science and Engineering, Jiangxi Agricultural University, Nanchang 330045, China高影响力机构 出　　处：《Plant Diseases and Pests》索引2016年第7卷第5期,共5页高影响力期刊 基　　金：Supported by National Natural Science Foundation of China(31360450);Science and Technology Project of Jiangxi Province(20122BAB214027) 摘　　要：The control effects of agricultural antibiotic 702( ag-antibiotic 702) on rice leaf blast and panicle blast were evaluated in field trials. With ag-antibiotic702 and the two-line early hybrid rice 287 as test materials,different concentrations of ag-antibiotic 702 liquids were sprayed at tillering stage and full heading stage of rice. In leaf blast test,the disease indexes of leaf blast at tillering stage were surveyed at 1 d prior to the first spraying and at 15 d post spraying,respectively.The disease indexes( DI) and the rice yield in panicle blast test was investigated at milky stage. Meanwhile,enzyme activities,including peroxidase( POD),catalase( CAT),superoxide dismutase( SOD),phenylalanine ammonia-lyase( PAL),and polyphenol oxidase( PPO),were measured. Kasugamycin( 45 μg/m L)and deionized water were designed as positive and negative controls. When the concentrations of ag-antibiotic 702 were 15,30 and 45 μg/m L,the control effects against leaf blast were 72. 14%,80. 32% and 85. 22%,respectively; the control effects on panicle blast were 74. 08%,84. 87% and 86. 58%,respectively; and the yield increase rates were 17. 28%,21. 40% and 22. 57%,respectively. So,ag-antibiotic 702,as a new agricultural antibiotic fungicide,could effectively control rice blast by inducing defensive enzymes,and increase rice yield. The results will contribute to further development of ag-antibiotic 702 and its application in rice blast control. 关 键 词：水稻稻瘟病 农用抗生素 田间药效试验 穗瘟 超氧化物歧化酶 苯丙氨酸解氨酶 防治效果 水稻产量
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