Preliminary screening of okra genotypes for leafhopper resistance Amrasca biguttula biguttula (Ishida) (Homoptera: Cicadellidae)

Abstract

The study was conducted for preliminary screening of 23 okra genotypes for relative susceptibility/resistance against leafhopper, Amrasca biguttula biguttula (Ishida) during 2018. The genotypes were raised in Completely Randomized Design layout and each genotype was replicated thrice. From this screening result, each genotype was categorized under moderately resistant, susceptible and highly susceptible grades. No genotype showed complete immune to leafhopper incidence. Leafhopper population was maximum in genotypes AE 26, Pusa Sawani, AE 64 and AE 15 with leafhopper population of 16.83, 16.42, 15.17 and 14.00/plant. The damage grade index was maximum in AE 26 (3.50) and Pusa sawani (3.35). Hence, it is evident from the present result that, AE 26 and Pusa Sawani was highly susceptible while, AE 65 and AE 23 are moderately resistance which can be used for further studies.