Vulnerability studies of okra genotypes to bhendi yellow vein mosaic virus (BYVMV)

• DOI: 10.5958/0974-0112.2022.00025.1
• Publication Date: 2022-07-12T09:11:32Z
• Authors: P. V. Puneeth; R. K. Yadav; Suman Lata; Amalendu Ghosh; Harshawardhan Cha...; B. S. Tomar; Vishwanath Bidara...; G. Boopalakrishnan; Anjan Das; Avinash Tomer
• Keywords: Vulnerability; Mosaic

India is the leading okra producer globally, but its production suffers due to losses caused by Bhendi yellow vein mosaic virus (BYVMV) disease which transmitted whitefly. Due unstable resistance nature and limited availability of sources for in cultivated types, crop improvement programme has not taken a fast pace. In this study, sixty-four distinct genotypes were screened their BYVMV under natural epiphytotic conditions Delhi. It was found that incidence (DI), coefficient infection (CI), vulnerability index (VI), adult whitefly count (AWC) varied significantly amongst different genotypes. The highest mean DI recorded Pusa Sawani (86.5%) 0% Bhindi-5 (DOV-66), DOV-89 DOV-92. (CI) (70.39%). Maximum VI (83%) wild IC-141040, IC-90560 Bhindi-5, DOV-81 Similarly, AWC maximum (30.4) lowest number DOV-26 (1.2). whiteflies peaked at 80 days after sowing subsequently decreased. most susceptible genotype DOV-92 resistant based on study. can be used transfer other lines or varieties also hybrid development future programmes.