*Department of Agricultural Entomology, Email: ngpathy@rediffmail.com (corresponding author) Tamil Nadu Agricultural University, Coimbatore, 641003
**Centre for Plant Molecular Biology & Biotechnology, Tamil Nadu Agricultural University, Coimbatore, 641003
***Department of Crop Physiology, Tamil Nadu Agricultural University, Coimbatore, 641003
Online published on 24 October, 2019.
Varietal resistance is one of the key IPM strategies to avoid indiscriminate use of sinsecticides. This study evaluates 23 okra genotypes against leafhopper Amrasca biguttula biguttula (Ishida). The experiment was conducted in two locations in Randomized Block Design during 2018 and 2019. The results revealed that the most infested or preferred genotypes were AE 10, Pusa Sawani and AE 15 with pooled damage grade index being 3.23, 3.15 and 3.18, respectively. The least mean numbers of leafhopper and damage grade index were observed with the genotypes AE 65 and AE 23, with differences among the genotypes evaluated being statistically significant.
Okra, genotypes, leafhopper, screening, resistance, grade index, AE 65, AE 23, preference, infestation
