Plant characters of brinjal genotypes in relation to incidence of jassid Amrasca biguttula biguttula (Ishida)

Abstract

Brinjal, Solanum melongena L. (Solanaceae) is attacked by jassid Amrasca biguttula biguttula (Ishida). At the University of Agriculture, Faisalabad the relationship of characters in brinjal genotypes to jassid incidence was evaluated under field conditions. Oval round, Purple Long, Green Long, Round Black and Purple cultivars were sown during June 2018 in nursery. Randomized Complete Block Design (RCBD) was followed with three replications. The plant characters were correlated with the jassid incidence and their effect was evaluated with simple and multiple linear regression. The results reveal that the hair density on the lamina showed the maximum effect, while height of plants and number of primary branches showed the least effect. The hair density and hair length on leaf lamina, midrib and vein are the most important characters. The moisture content and thickness of upper, middle and lower leaves showed positive but non-significant correlations.