Prevalence of Cucumber Mosaic Virus and its impact on growth and yield of different chili cultivar

抄録

With a view to determine prevalence and impact of Cucumber mosaic virus (CMV) on chilli (Capsicum annum L.) eleven varieties consisting one Bangladesh Agricultural Research Institute (BARI) released variety BARI Marich-1, and ten local varieties like Chittagong, Comilla-1, Jamalpur, Gazipur, Chandpur, Pusa jawla, Comilla-2, Kustia, Bogra and Balujhuri were tested. The results of the symptomatological study, host range test and Double Antibody Sandwich Enzyme-Linked Immune - Sorbent Assay (DAS-ELISA) revealed that the identified virus was Cucumber mosaic virus (CMV). The incidence of CMV was recorded as 3.00 to 21.21% depending on the varieties. The highest prevalence (21.21%) of CMV was recorded in Kustia and lowest (3.00%) was in variety Comilla-2. Significant (P=0.05) reduction of growth and yield contributing characters of different chilli varieties were observed due to CMV infection. The highest plant height (39.21%) and canopy diameter/spreading (36.84%) reduction were recorded in variety Chandpur and Balujhuri respectively and lowest plant height (15.67%) and canopy diameter (8.88%) reduction were recorded in variety Comilla-2. The number of fruit/plant reduction was varies from 49.63 to 89.29% where highest in variety Balujhuri and lowest in Comilla. Fruit length and fruit weight reduction were found from 14.03 to 44.14% and 10.56 to 36.96%, respectively.