Introduction
Wheat (Triticum aestivum) is the most important and considered cereal crop for major part of global population. In Pakistan, wheat is most important crop of agricultural economy. It is grown each year on 8.3 million hectares that is 36% of total area cropped in Pakistan. It accounts for 40% of total value added of major crops. It is essential part of diet for population as it contributes 60% of daily diet of common masses in Pakistan. Average per capita consumption is around 125kg and possess a central position in agricultural policies of government. If area under wheat crop remains same then wheat requirement would be about about 34.25 million tonnes in 2030. It means additional 10 million tonnes wheat have to be produced during next 20 years. It would require to improve national average yield from 2.8 to 3.8 t/ha (2030). There is 60% yield gap in wheat that is required to be tapered. There are several agronomic, physiological, political and managerial factors responsible for low yield in Pakistan. Among them ill management is more conspicuous of all. Since management skills vary from area to area, productivity also vary from region to region. In addition there is yield gap between progressive and common farmers which may attribute to several ignorance factors.
Conventional plant breeding has been practicing successfully since 1960’s for production of improved wheat varieties but has limited potential to meet such a great challenge with limited gene pool. Genetic engineering techniques are gaining popularity and desired gene isolated from any genetic background can be inserted into wheat genome imparting improved characteristics. Different genetic engineering approaches have been employed to increase agronomic properties of different crops. In this new era of research development, transcription factors are gaining much interest towards improvement of