Transmition of Watermelon Mosaic Virus-2-XJ by Myzus Persicae

The research of regularity for transmission of watermelon mosaic virus-2-XJ by Myzus persicae was carried out.30s was long enough for Myzus persicae to acquire WMV-2-XJ from infected plants,acquisition rate increased with longer acquisition time,as the acquisition time was more than 70s,acquisition rate attained to 100%.The transmission time threshold for the aphid was 0.25h and the transmission rate increased with the time over the time threshold,as the feeding time on Cucurbita pepo of viruliferous aphid was over 2h,the transmission rate was up to 100%.The virus could be transmitted even by one Myzus persicae,and the transmission rate increased with the number of vectors per plant, as the number of aphid per plant was more than 15,transmission rate was up to 100%.These results indicate that Myzus persicae can transmit watermelon mosaic virus-2-XJ with high efficiency.