摘要
ELISA和生长法检测结果表明,芝麻种子不种传PStV,感染PStV的花生是芝麻黄花叶病毒病的主要初侵染源。桃蚜、豆蚜和大豆蚜能传播芝麻上PStV,传毒率分别为37％、19.3％和13.8％,而棉蚜传毒率为0。黄花叶病害流行程度受芝麻生育期与蚜虫发生量互作作用影响。芝麻黄花叶病害年度间流行程度差异大,发病率与6月下旬至7月上旬平均气温、降雨量及雨日相关。芝麻苗期至蕾期为感病生育期,进入开花后期,芝麻对PStV表现一定抗性。
The results of indirect ELISA and growing-on tests show that peanut stripe virus (PStV) could not transmitted through sesame seed. Peanuts infected by PStV were the main primary source for the occurrence of sesame yellow mosaic disease. Of four species of aphids tested, Myzus persicae, Aphis craccivora and A. glycines transmitted virus with the rate of 37%, 19. 3% and 13. 8%, respectively, while A. gossypii did not transmit the virus. Epidemic level of PStV in sesame was associated with the combination effects of aphid occurrence and sesame growing stage. Disease incidence varied significantly among years, which was affected by average temperature, rainfall and number of rainy days in 20 days from late June to early July. Sesame plants were highly susceptible to PStV in seedling and early flowering stages.
出处
《植物保护学报》
CAS
CSCD
北大核心
1999年第1期55-59,共5页
Journal of Plant Protection
基金
国家自然科学基金
瑞典国际基金
关键词
芝麻
花生条纹病毒
发生规律
sesame, peanut stripe virus (PStV), epidemiology
