How did Yuan Longping invent hybrid rice?

1986, Yuan Longping put forward the hybrid rice breeding strategy, which divided the hybrid rice breeding method into three strategic development stages: three-line method, two-line method and one-line method, that is, the breeding program developed from complex to simple and efficient.

Judging from the utilization level of heterosis, it can be divided into three strategic development stages: the utilization of heterosis among varieties, the utilization of heterosis among subspecies and the utilization of distant heterosis, that is, the utilization of heterosis is developing in an increasingly strong direction.

According to this idea, every time hybrid rice enters a new stage, it is a new breakthrough, which will promote rice production in by going up one flight of stairs. This strategic concept points out the direction for China to explore new hybrid rice after the successful research and development of three-line hybrid rice.

1On July 6th, 987, Yuan Longping students Li Bihu and Deng Huafeng discovered a photosensitive sterile rice in the three-line indica rice breeding materials of Anjiang Agricultural School. After two years and three generations of propagation and observation in different places, the agronomic characters of this material are neat and consistent, the sterile plant rate and sterility reach 100%, and the fertility transformation is obvious and synchronous.

This new achievement has opened up a new situation for the transition of hybrid rice from "three-line method" to "two-line method" In the same year, he put forward the "development strategy of hybrid rice", that is, using heterosis among plants on the basis of three-line method; Utilization of heterosis between indica and japonica subspecies based on two-line method: utilization of distant heterosis based on one-line method.

From 65438 to 0987, the national "863" plan took the research of two-line hybrid rice as a special topic, and Yuan Longping established a two-line hybrid rice research cooperation group to carry out nationwide collaborative research. After 9 years' hard research, the 1995 two-line hybrid rice was successful, which increased the yield by 5% ~ 10% compared with the three-line hybrid rice at the same maturity stage, and the rice quality was generally good. In recent years, the planting area is about 6000 mu.

Extended data

Yuan Longping 1997 put forward the technical route of "super-high-yield hybrid rice breeding", which attracted great attention internationally. Under his leadership, in 2000, 2004 and 20 1 1, the first, second and third phases of super rice yield of 700 kg, 800 kg and 900 kg per mu were achieved.

The fourth goal of yield per mu 1000 kg also achieved a historic breakthrough in June 20 14, which laid the foundation for further large-scale and substantial improvement of rice yield per unit area. 1995 was elected as an academician of China Academy of Engineering. Known as the father of hybrid rice.

Baidu Encyclopedia-Yuan Longping

Baidu encyclopedia-hybrid rice