Identification of the most prevalent and spatially disperse virus on chilli at Northern and Eastern part of Bangladesh

Abstract

The study was undertaken with a view to determining the reduction of growth and yield contributing characters due to inculpative effect of viruses in chilli (Capsicum annum L.). The results of symptomatological study among nine locations from two districts namely Sylhet and Rangpur in Bangladesh revealed that the incriminating disease incidence was 11.74% to 55.90% depending on the location. The highest prevalence (55.90%) was in Biswanath and the lowest (11.74%) was in Mithapukur. The highest plant height reduction was in Rangpur Sadar (18.27%), lowest at Kanaighat (14.14%). The highest fruit number reduction was in Mithapukur (72.49%), The highest fruit weight reduction was in Biswanath (40.64%). The lowest Fruit number and fruit weight reduction were respectively 21.18% and 22.41% at Pirgong. In order to formulate management practices for the control of virus diseases of chilli, reliable tests are required for its detection. DAC-ELISA was found as the suitable tests for the detection of viruses. In this experiment three antisera i.e. Cucumber mosaic virus (CMV), Potato virus Y (PVY), Chilli veinal mottle virus (ChVMV) were used to detect the virus separately. However, only CMV antisera gave the positive result against the virus. The results suggested that CMV as causal organism of that diseases.