1Department of Genetics and Plant Breeding, Annamalai University, Chidambaram, Annamalai Nagar - 608 002, Tamil Nadu, India
Department of Entomology, Annamalai University, Chidambaram, Annamalai Nagar - 608 002, Tamil Nadu, India
*Corresponding author's E-mail: aarthisakthi95@gmail.com
Online published on 4 January, 2023.
Resistance potential of 280 cowpea genotypes against aphid, Aphis craccivora Koch was evaluated during rabi, 2020 and kharif, 2021. Weekly observations on aphid population and mean infestation index were recorded. Based on the standard scale, in rabi season, 251 genotypes were rated resistant while 15 genotypes were moderately resistant, 10 were susceptible and 4 were highly susceptible. In kharif season, 212 genotypes were resistant and 32 were moderately resistant while 20 were susceptible and 16 were highly susceptible.
Aphis craccivora, Cowpea (Vigna unguiculata), Field screening, Germplasm, Resistance
