When was hybrid rice invented?

Internationally, American agronomist Jones first put forward the theory that rice has heterosis in 1926. The first successful realization was completed by American Henry Beach in 1963 in Indonesia. Henry Beach is also known as the father of hybrid rice in academic circles, and won the World Food Prize in 1996. Japanese scholars discovered wild sterile lines in 19 17. 1958 went to Tohoku University in Japan and bred a sterile line "Tengban No.5". It was found that wild rice with red awn in China could cause male sterility of Tengban No.5, and distant hybridization was proposed to improve rice yield. 1966 Japan Ryukyu university Xincheng Changyou crossed with Taichung 65 with Qinsulabao as the female parent ~ bred BT-type sterile cytoplasm Taichung 65A~ ~ and selected the homogeneous restorer line of BT-type sterile line from some fertile plants of the offspring of this hybrid combination through self-stability ~ in 1968 to realize japonica type. Japonica rice is short, with narrow leaves, dark color and short grains, and is matched with three hybrid lines. 1972, the hybrid rice research team of Jiangxi Academy of Agricultural Sciences, headed by Yan Longan, bred indica wild abortion sterile lines Zhenshan 97A and Erjiuai 4A for the first time. 1982-2003, the extension area of hybrid rice bred by "Zhenshan 97" sterile line reached18.744 million mu, accounting for 47.59% of the total area of hybrid rice in China. 1973 bred Shanyou No.2, the first hybrid rice in China, which achieved three-line matching and was widely popularized.