The most commonly consumed grain, wheat, is a Rabi crop which usually requires 15 to 20 degrees of temperature for a good harvest. All other crops combined are less than wheat alone in worldwide trade and also wheat takes up the most sown area. It is the major ingredient in a variety of foods and dishes and is a precise source of carbohydrates. Wheat is an adaptable crop, it can tolerate intensive cold weather as well as bright sunshine and even grow in temperate as well as tropical regions. The production of wheat underwent a gradual upliftment with the Green Revolution and is still increasing in its area and export every year.