Integration and inheritance stability of foreign Bt toxin gene in the bivalent insect - resistant transgenic cotton plants

摘要

Genetic and expressional stability of Bt toxin gene is crucial for the breeding of insect - resistant transgenic cotton varieties and their commercialization. Genomic Southern blot analysis of R_3, R_4 and R_5 generations of biva - Lent transgenic insect - resistant cotton plants was done in Order to determine the integration, the copy number and the Inheritance stability of Bt toxin gene in the transgenic cotton Plants.