Barnase-barstar system is an indelible technique to produce hybrid seeds in self-pollinated crops. The scientists have deployed this technology to produce Genetically Modified(GM) mustard variety DMH (Dhara Mustard Hybrid)-11.

The barnase gene codes for a protein that impairs pollen production and renders the plant into which it is incorporated male-sterile.

This plant is then crossed with a fertile parental line containing the barstar gene that blocks the action of the barnase gene.

The resultant F1 progeny is both high-yielding and also capable of producing seed/ grain.

Source: GEAC gives its nod for commercial cultivation of GM mustard yet again