Chinese scientists have discovered a new mechanism for precocious and high yield of rice

, Beijing, August 27 (Reporter Dong Ruifeng) How can rice be both precocious and high-yielding? A number of scientific research teams in China have found that a gene called Ef-cd can increase rice maturation by 7 to 20 days, without causing yield loss or even varying degrees of yield increase. Excavation and utilization of this gene will strongly promote the need for weight loss and efficiency in the cultivation of green super rice varieties. The results of the study were published online on the 27th in the well-known academic journal
American Academy of Sciences.
the early stage of the development of hybrid rice in China, the phenomenon of "high yield is not precocious, premature is not high yield" is a major problem. Yuan Longping
team and Xie Hua'an
team, etc. have studied and developed a number of new varieties of precocious and high-yielding rice, but their molecular physiological mechanism has not yet been analyzed.
the
Research Group of the Institute of Genetics and Developmental Biology of China and the Deng Xiaojian Research Group of Sichuan Agricultural University, after many years, the Ef-cd gene was cloned. Large-scale histological analysis showed that rice with Ef-cd gene, nitrogen metabolism, curcultin metabolism and phototholytic gene expression significantly increased. Physiological tests have also shown that the Ef-cd gene significantly improves the nitrogen absorption capacity of rice and the efficiency of leaf photoclithing.
above results show that the Ef-cd gene combines precociousness and high yield, increases the nitrogen fertilizer utilization efficiency and photolysal efficiency of rice, and has the remarkable characteristics of efficient use of resources. The research team said that under the new situation of rice production, the excavation and utilization of this gene will strongly promote the weight loss and efficiency of the cultivation of green super rice varieties, and at the same time, it has important application potential to solve the problems of live rice and grain, grain and vegetables, grain and oil for rice, precocious yield of two-season rice and "super-parent late ripe" of hybrid rice among subseeds.