Cotton is a main cash crop of Pakistan as it plays a pivotal role in the economy. Cotton plant has been genetically modified to contain the toxic gene of Bacillus thuringiensis known as Transgenic Bt Cotton and it has been found successful in the management of bollworms; however, it also invites other insect pests especially sucking pests due to reduction in pesticide sprays at early stages. So, the present study was planned to measure the comparative resistance of six Bt cotton cultivars against major sucking insect pests (whitefly, jassid and thrips). The results of experiment showed that...