One method used for crop production which ensures high yield is plant breeding. It is the science involved in improving the varieties of crops by breeding plants. The plants with desired traits are picked up from different areas, places and then hybridisation or cross-breeding of these varieties is done to obtain a plant/crop of desired characteristics. The high yield variety crop shows characteristics such as high yield, early maturation, less water requirement for irrigation, better quality of seeds less requirement of fertilisers, adaptations to the environmental conditions.