Singh, Y.V.Karmakar, Pradip2020-01-312020-01-312007-06http://krishikosh.egranth.ac.in/handle/1/5810142218The present investigation was conducted during autumn winter season of 2005-06 and 2006-07 at Vegetable Research Centre of Gobind Ballabh Pant University of Agriculture and Technology, Pantnagar, U.S Nagar, Uttarakhand. The experiment was designed to study the crossability relationship among the two commercial cultivars Pant Rituraj, Pant Samrat and wild relatives viz. Solanum gilo, S. aethiopicum and S. khasianum; morphology of the parents and their hybrids and to screen these genotypes against shoot and fruit borer, jassid, phomopsis blight and bacterial wilt. The experiment was laid out in randomized block design with three replication. The findings of the present investigation revealed that cultivated species Solanum melongena was cross-compatible with S. gilo and S. aethiopicum despite the parthenocarpic fruit set in the cross with S. gilo. Morphological variation was observed in the F1 hybrids from their respective parents, while the cross S. melongena cv. Pant Rituraj x S. aethiopicum showed morphology of S. aetiopicum. Among the parents S. khasianum was recorded as resistant to shoot and fruit borer, jassid, phomopsis blight and bacterial wilt; S. gilo showed resistant to shoot and fruit borer, jassid and phomopsis blight while S. aethiopicum was found as promising resistance source against bacterial wilt. Among the F1 hybrids, crosses involving S. gilo as one of the parent showed high level of resistance against shoot and fruit borer, jassid, phomopsis blight but the crosses of S. aethiopicum were ratted as resistant to bacterial wilt. Successful gene transfer from these wild relatives is possible through back cross except from S. khasianum which needs the support of Biotecnological tools.ennullThesis