芝麻上花生条纹病毒的发生规律

ＥＬＩＳＡ和生长法检测结果表明，芝麻种不种传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、豆蚜和大事蚜能传播芝麻上ＰＳｔＶ，传毒率分别为３７％、１９．３％和１３．８％，而经为０。黄花叶病害流行程度肥芝麻生育期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７月上旬平均气温、降雨量及雨日在。芝麻苗期至蕾期为感病生育期，进入开花后期，芝麻对ＰＳｔＶ 表

EPIDEMIOLOGY OF PEANUT STRIPE VIRUS (PStV) ON SESAME

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.