author(s)
Muhammad Musa Khan, Muhammad Yahya Khan, Rana Muhammad Kaleem Ullah, Muhammad Yasir, Annum Khalid and Muhammad Ahsan Khan

abstract
Results showed that maximum whitefly incidence was observed in Black Round and the minimum population was recorded on Black Beauty. Correlation analysis described that the hair length on midrib region, leaf lamina thickness and percentage of manganese contents showed negative and hair density on midrib region, nitrogen contents and protein contents have a positive correlation with whitefly population. When the morphological characters were regressed together, hair density on midrib was a most important parameter with 72.1% impact. The combination of all morphological parameters has no significant impact on the whitefly population. Among all the biochemical parameters nitrogen showed maximum 71.1% impact while all parameters together showed 8.4% impact. Principle component analysis showed that the thickness of the leaf lamina played an important role in the reduction of whitefly when all significantly correlated parameters were calculated together. From the results, it can be concluded that the morphological and biochemical characters of brinjal imparted resistance against whitefly which can be used as an important tool in integrated pest management model.