BY means of genetic engineering, genes can be introduced into the same plant or animal species for the improvement of their beneficial qualities. This technology has led to the commercial production of genetically engineered [GE] crops on approximately 250 millions acres worldwide. These crops contain desired genes that make them pest resistant and insect resistant, and also in other GM crops, genetic engineers improved their nutrient quality and storage life-time by the insertion of desired genes. In this review, techniques used in genetic modification of plants, their application and negative impacts on the environment will be addressed. Also safety assessment raised regarded GE crops and food, environmental release of GM crops, status of GM crops in India and their economics will be covered in this review.
