Genetic engineering of cotton with a novel cry2AX1 gene to impart insect resistance against Helicoverpa armigera

Embryogenic calli of cotton (Coker310) were cocultivated with the Agrobacterium tumefaciens strain LBA4404 harbouring the codon-optimised, chimeric cry2AX1 gene consisting of sequences from cry2Aa and cry2Ac genes isolated from Indian strains of Bacillus thuringiensis.Forty-eight putative transgenic plants were regenerated, and PCR analysis of thes

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