Overcoming Hybrid Rice Challenges

In October 1973, at the National Rice Research Conference held in Suzhou, Yuan Longping officially announced that the "three lines" of Chinese indica hybrid rice had been successfully supported.

This achievement is the result of years of intensive research by scientific researchers represented by Yuan Longping. In July 1960, Yuan Longping, then a teacher at the Qianyang Agricultural School in Hunan Province, found a natural hybrid rice in the experimental field, and germinated the idea of ​​studying hybrid rice and increasing grain yield. In 1966, Yuan Longping published his first important paper, "Male Infertility in Rice," which led to a solid first step in the study of hybrid rice.

In the autumn of 1970, according to Yuan Longping's idea of ​​"crossing wild rice with cultivated rice", his student Li Bihu found a male sterile plant in Hainan. The three male sterile seeds that were transferred were named "wild defeat", which opened a breakthrough for "three lines" matching.

In 1972, hybrid rice was listed as a national key scientific research project. It was chaired by the Chinese Academy of Agricultural and Forestry Sciences and the Hunan Academy of Agricultural Sciences, and organized nationwide efforts to tackle the problem. In 1973, on the basis of breaking through the "sterile line" and "maintaining line", Zhang Xiancheng et al. Found a group of "recovery" with strong advantages, developed anthers, large amount of pollen, and a recovery of more than 90% among Southeast Asian varieties. system". The "Three Series" has finally been successfully matched!

In 1974, Hunan began to trial hybrid rice. In 1976, the area of ​​demonstration and promotion nationwide expanded to more than 2.08 million mu, all of which increased production by more than 20%. In 1976, the country's total grain output reached 286.31 million tons, an increase of 47.2% over 1965. From 1976 to 1987, China's hybrid rice production has increased by more than 100 million tons, and the increased rice production each year can support more than 60 million people.

The promotion of the hybrid rice planting area has made a huge contribution to the increase of grain production in China. China can proudly announce that less than 10% of the world's arable land has solved the food problem of 22% of the world's population.

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