Yuan Longping's team handed over the transcripts of the third generation of hybrid rice

Science and Technology Daily Changsha, October 22 (Reporter Yu Huiyou correspondent Wei Ke Xinye) "I am satisfied with this result. We have experimental fields in Xiangbei, Xiang zhong and Xiangnan. Strive to pass the Hunan Province next year, and then to the national promotion, do a larger area of demonstration and planting. "22, Changsha, Hunan hybrid rice research center a happy. The new combination
the third generation hybrid rice technology of the Yuan Longping team of the Chinese Academy of Engineering was tested on the spot and produced a "report card" by the expert group. Yuan Longping was also happy to make the above assessment. According to the results, the third generation of hybrid rice in Hengnan County base of the measured harvest, the average yield of 1046.3 kg per mu.
Yuan Longping team super hybrid rice technology has experienced three generations so far. The first generation is the "three-system method" with cytogenetic male infertility as a genetic tool. The second generation is the "two-system method" with light temperature-sensitive male infertility as a genetic tool, which is also the mainstream breeding method of super hybrid rice. However, both are flawed: the three-line infertility system is limited in its distribution, and there is a risk of breeding and breeding in the two-line infertility system.
third generation technology, it effectively solves the defects of the breeding method of the first two generations and "inherits" its advantages. The so-called third generation hybrid rice, that is, the use of ordinary recessive nuclear male infertility system as the mother, to conventional varieties, line as the father-based preparation of a new hybrid rice. Yuan Longping believes that this is an ideal way to take advantage of the advantages of rice hybrids in the future.
It is learned that Hunan Hybrid Rice Research Center has now established a mature third-generation hybrid rice breeding technology system, selected a number of third-generation hybrid rice infertility system, and through the use of the advantages between the subseeds, to cultivate a series of strong combination. This year, the team in Changsha, Hengnan, Xiangtan, Taoyuan, Heshan and other places to carry out the third generation of hybrid late rice test demonstration.
This time, hunan Agricultural Society organized China Agriculture
, Fujian Province Agriculture
, China Rice Research Institute and other units of experts, the team in Hengnan County, Hunan Province, Yunhui Town, Xiangtan City Yuhu District and Changsha City Furong District demonstration of the third generation hybrid late rice series combination test on-site observation and production. Experts believe that these third-generation hybrid late rice combination advantages, is expected to bring about a major breakthrough in production, the world's rice cultivation has become a new "welfare."