With the improvement of production, rice is not only as an important grain cropin China, but also as an economic crop and forage crop. So it has great value ofdevelopment and utilization, and become more and more important to our life. Inrecent years, although the yield and quality of rice are improved, it is still affectedwith a lot of disadvantages. New varieties cultivation is the only way for thedevelopment of agricultural science and technology in our country. The technique ofmolecular biology and plan...