Annals of Plant Protection Sciences

A trial was conducted to evaluate different germplasms of litchi on the basis of biochemical parameters and also to screen them against leaf roller (Platypepla aprobola) and fruit borer (Conopomorpha cramerella) infestation in three locations of West Bengal. A total of 13 superior seedling germplasms of Jalpaiguri, 7 commercially grown cultivars of Nadia and 5 superior clones of ‘Bombai’ variety of Murshidabad district were vetted under this trial. Biochemical analysis of fruits was carried out to realize qualitative traits. Incidence of fruit borer and leaf roller were also studied to find out tolerant one. The study revealed that among commercial cultivar, ‘Muzaffarpur’ had utmost frequency of damaged fruits by the borer (51.2%) although its reducing sugar content was found extremity (11.80%) with minimal acidity (0.45%) in Nadia. Prevalence of fruit borer was uttermost (55.0%) in SG-JAL-2 seedling in Jalpaiguri district while exhibiting least acidity (0.40%). It may be inferred that TSS had a direct correlation with resistance to fruit borer whereas acidity was negatively correlated. Extent of leaf roller was found to be comparatively less in ‘Beniagram’ clone whereas highest percentage of rolled leaves was observed in ‘Raghunathpur’ clone(50%) of ‘Bombai’ in Murshidabad. In this case N content of leaf might have positive correlation with leaf roller infestation.