Abstract
The jassid (Amrasca biguttula biguttula (Ishida) is an emerging serious pest of brinjal crop in Pakistan. The present study was carried out for evaluating relative plant resistance/susceptibility of different cultivars of brinjal against the jassid during summer 2009 at PARS, Faisalabad, Pakistan. Fourteen cultivars of brinjal viz. Pusa Purple Round (PPR), Rubi, Vrib-01, Vrib-02-F1, Dilnasheen, Vrib-0401, Vrib-04, Bemissal, Vrib-9901, Nirala, Qaisar, JK_Kajal, Cluster King and Purple QL were tested for their susceptibility against jassid. All the tested cultivars showed significant differences (P≤0.05) for the tested parameters viz. pest preference, host plant susceptibility indices (HPSI) as well as yield/plot. The peak infestation time of the pest after sowing of crop was 1st week of June after which it gradually declined. The cultivars Nirala, Bemissal and Vrib-04 appeared as comparatively susceptible showing high population of jassid/leaf while Vrib-9901, Vrib-0401, and Vrib02-F1 appeared as intermediate and Rubi, Vrib-01 and Cluster King were observed comparatively as resistant ones with least number of jassid/leaf. The cultivar Bemissal proved the most susceptible varietyamong the tested ones showing maximum level of HPSI (18%) and minimum fruit yield (44.66 kg/plot) while Rubi proved the most resistant cultivar with minimum HPSI (7%) and a maximum fruit yield (81.0 kg/plot).

Muhammad Ali, Muhammad Ashfaq, Naureen Rana, Muhammad Saleem Haider, Muhammad Ashfaq, Muhammad Amjad. (2014) The Susceptibility Study Of Some Aubergine (Solanum Melongena L.) Cultivars Against Jassid (Amrasca Biguttula Biguttula (Ishida)., , Volume-51, Issue-3.
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