For the capture of Super Hybrid Rice 1000 kilograms per mu, the storm, the father of hybrid rice, China academician of Chinese Academy of Engineering Yuan Longpingxin into the molecular biological technology. In May 9th, the author from the "12th Five Year" national Ministry of science and technology "863" project "the super high yield rice molecular breeding and variety development" start was informed, the research group proposed to use molecular biology technology, fine mapping of a number of important trait genes, new high quality and high yield varieties created a batch of excellent new germplasm and breeding of new material and has great application prospects, and the promotion of planting 40000000 acres.
The project research core collection is a photo thermo sensitive genic male sterile line "Y58S" of the two-line hybrid rice breeding backbone parents, this is super hybrid rice parental family neutron heir most luxuriant, was also the first to break a large area of 900 kilograms per mu yield of "Y two you No. 2" female parent, has been in 15 provinces of China, study of more than 100 units of introduction and cooperation. Among them, approved by the provincial above varieties Y two excellent hybrid rice combinations of 42, C two excellent series hybrid rice combinations of 20 or more, quality reached the country awarded two grade quality rice country trial mix 2. For the "Y58S" sterile line how to effectively Fangshuai anti-aging, the research group will be by means of molecular biology technology, from the gene level are detailed, and can be applied to breeding innovation.
Yuan Longping told the author, good quality and high yield of rice, existing international technology there are two routes: one is the form of improved, two heterosis. China's super hybrid rice from the large area of 700 kilograms per mu yield over 900 kg mark, mainly rely on morphological improvement and heterosis breeding comprehensive use, with perfect plant shape and excellent genetic characteristics of seed. Super hybrid rice breeding technology of our country be way ahead of world, but there is still a shortage of rice breeding. For example: coordination of super high yield and quality improvement, disease resistance needs to be further improved; fusion great progress and conventional breeding techniques of molecular biology is not deep; in addition, the application of molecular technology improved multi starts from a single gene or trait, the lack of systematic improvement from the regulation network of achievement. If the capture of rice by molecular techniques of large area of 1000 kilograms per mu yield of difficulties, it means that by 2030, in the face of the global 5000000000 with rice as the staple food of the population, Chinese hybrid rice technology will have the ability to undertake "make contribution for darn" world food gap.
According to project leader, a researcher at the National Hybrid Rice Engineering Technology Research Center Deng Qiyun introduced, the paper mainly relates to the "Super Hybrid Rice backbone parental genes of agronomic importance /QTL database creation and use", "rice grain filling high molecular mechanism study and explore for quality", "excellent gene mining and utilization of wild rice", "n high efficient utilization of rice variety development", "super high yield and wide adaptability of high quality rice breeding" in five parts, by the Zhejiang Provincial Academy of agricultural science of Virology and Biotechnology Research Institute, Chinese Academy of Sciences, Shanghai Institute of life science, China Agricultural University, Anhui Academy of Agricultural Sciences, rice, Hunan Hybrid Rice Research Center and other units jointly undertake.
