Morphological characters of tomato in relation to resistance against tomato fruit borer, Helicoverpa armigera (Hubner)

Abstract

The study on relation of morphological characters to fruit infestation of H. armigera was\rconducted in College Farm, N.M.C.A, Navsari Agricultural University, Navsari, Gujarat during\rtwo consecutive years 2012-13 and 2013-14. The result showed that the correlation of plant\rheight (r= 0.7775), branches plant-1 (r= 0.7874), and fruits plant-1 (r= 0.7388) with infestation\rof H. armigera were significantly positive, while the effect of fruit pericarp thickness (r= -\r0.9576) exhibited significantly negative association with the damage of tomato fruit borer.\rHowever the stem diameter, fruit diameter, locules fruit-1 and calyx fruit-1 showed positive but\rnon-significant association with fruit infestation recorded 0.4855, 0.3048, 0.3413 and 0.3943\rcorrelation values, respectively.