ICAR-Directorate of Onion and Garlic Research, Rajgurunagar, Pune410505, Maharashtra, India
*Email: karuppaiahv2008@gmail.com (corresponding author)
Online Published on 6 February, 2023.
Nine genotypes of garlic were evaluated for their reaction to Thrips tabaci Lindeman under natural infestation and for host plant traits. Amongst genotypes, UHF G12-2 exhibited resistant reaction; G-282 and PGS-204 were found to be moderately resistant and G-384, G-189, Bhima purple, PGVK-07 and G-304 were susceptible. The relationship between infestation and among leaf angle (r = -0.897**) and total phenol content (r= -0.836**) showed a significant negative correlation. Leaf damage revealed a weak negative correlation with leaf angle (r= -0.483) and total phenol content (r= -0.303). The plant height and number of leaves revealed a significant negative correlation with thrips damage (r= -0.796*) and non-significant negative one with thrips density. Total chlorophyll content showed a non-significant negative correlation with thrips density (r= -0.278) and damage (r= -0.597). Thus, the garlic cultivar UHF G 12-2 could be a promising genotype with resistance/tolerance, having higher phenol content, total chlorophyll and bulb yield.
Thrips tabaci, Allium sativum, Varietal resistance, Biochemical resistance, Biophysical traits, Antixenosis, Antibiosis, Tolerance, Susceptible, Phenol, Chlorophyll, Bulb yield
