Screening of cowpea (Vigna unguiculata) varieties against Callosobruchus chinensis under storage condition
Abstract
Investigations were carriedout at Departmentof Entomology, B. A. College Agriculture, Anand Agricultural University, Anand, Gujarat, India during 2011-12ontencowpeavarieties viz., ‘Anand-1’, ‘Anand-3’, ‘Anand-4’, ‘Anand-5’, ‘RCV-7’, ‘RC-19’, ‘RC-101’, ‘Divya-405’, ‘Local Nirmali’ and ‘Pusa Phalguni’ to see their reactions against Callosobruchus chinensis instorage condition. Among them‘Pusa Phalguni’ had the lowest number of adult emergence (3.62) followed by ‘Divya-405’ (4.25) and ‘RCV-7’ (5.95). On the basis of per cent weight loss due to infestation of C. chinensis, ‘RCV-7’ was found superior with lowest (1.73%) per cent weight loss after six months of cowpea storage followed by ‘Divya-405’ (1.76%) and ‘Pusa Phalguni’ (1.82%). Significantly lower germination loss was recorded in ‘Pusa Phalguni’ (14.03%), ‘Anand-1’ (14.61%)and‘Divya-405’ (14.66%). Basedonthe above three parameters varieties ‘Anand-1’, ‘Anand-5’, ‘RCV-7’, ‘RC-101’, ‘Divya-405’ and ‘Pusa Phalguni’ found highly resistant against Callosobruchus chinensis under storage.
Keywords
Screening, Cowpea, Callosobruchus, Storage