and recover homozygous lines where all subsequent progenies could show resistance to the herbicide application.
The result of insect bioassays demonstrated the resistance of the developed transgenic lines to one of the target insect pests. To-tal larval mortality and negligible feeding damage was observed on the transgenic plants compared to 15% larval mortality and heavy feeding damage on the control plants. Similar results have been re-ported on transgenic crops expressing different cry proteins. Trans-genic sorghum plants expressing a syntheticcry1Acgene showed 40% larval mortality of spotted stem borer. Total mortality of tobacco budworm and tobacco hornworm larvae and negligible insect damage has been observed on trans-genic tobacco expressing cry1Ac protein Similarly, up to 100% larval mortality of yellow stem borerwas reported on transgenic rice expressing cry1Ac protein