Efisiensi penularan virus mosaik bengkuang dengan Aphis craccivora Koch. dan A. gossypii Glover.

Abstract

Yambean mosaic virus is the most important virus infecting yam bean in Indonesia. The virus were transmitted either mechanically or via aphid. This study test the transmission efficiency of the virus via A. craccivora and A. gossypii by using different number of aphid such 1,3,5,7, and 10 for each treatment. To determine the transmission efficiency, incubation period, type of symptom and incidence were used as parameter. Transmission of virus by A. craccivora showed incidence were used as parameter. Transmission of virus by A. craccivora showed incidence range 90 to 100%. Significant differences in incubation time of 1 aphid compared to other treatments and showed severe leaf mosaic, vein-banding and severe leaf malformation such as string.