Biochemical constituents influencing the incidence of leafhoppers on different mango genotypes

Abstract

Study was carried out at farmer’s field, Doddabbigere, Davanagere district during 2016-17. The investigations revealed that the incidence of mango leafhopper was significantly lowest in Totapuri (8.00 mean leafhopper / inflorescence or five sweeps in each direction) followed by Mallika (9.53 leafhopper) and Baneshan (10.69 leafhopper). Whereas, highest number of leafhopper was documented in Alphonso (17.99 leafhopper) followed by Sindhura (14.14 leafhopper), Mulgoa (13.90 leafhopper) and Neelum (13.56 leafhopper).The biochemical studies revealed that significantly lower total reducing sugars, and higher phenols content were noticed in Mallika and Totapuri followed by Baneshan. Whereas, significantly higher in genotypes like Alphonso, Sindhura, Mulgoa and Neelum. Correlation studies revealed that total phenol content was inversely related to the incidence of leafhoppers. Therefore the genotypes Totapuri and Mallika were ranked as tolerant based on the incidence of leafhoppers.