Transgenic
Plants - Conventionally, the genetic variation necessary for crop improvement is generated through hybridization, mutagenesis and polyploidy. More recently, somatic hybridization and somaclonal variation have been used for this purpose.
However, the most potent biotechnological approach for creating the desired is the transfer of specifically constructed gene assemblies through various transformation techniques; this constitutes genetic engineering.
The plants obtained through genetic engineering contain a gene or genes usually from an unrelated organism; such genes are called transgenes, and the plants containing transgenes are known as transgenic plants.