Super Rice finds super "mother"

Super rice varieties, which are known as “aristocrats” of rice varieties, are expensive and restrict the promotion of super rice. Yesterday, the Hunan Hybrid Rice Research Center was informed that: “The excavation and application of Yinhui-type rice sterile cytoplasm”, which has just won the first prize of the National Science and Technology Progress Award, has found a super “mother” of super rice breeding. Successfully reduced the price threshold for super rice seed production. This means that the super hybrid rice sponsored by Academician Yuan Longping will be launched and applied in China this year, and the price barrier for rice seed has been removed. The "Double Stars" of Hybrid Rice In the history of hybrid rice research in China, "wild defeat" and "printed water" are landmark "Gemini constellations." The former opened up a breakthrough in the success of hybrid rice research and the latter produced seed production. In terms of yield, rice quality, hybrid yield, etc., the production level of hybrid rice in China has been increased to a new level, which has created a new era of hybrid rice high-yielding seed production. Last year, among the 19 Japonica type super hybrid rice mainly promoted in China, the Indian-water hybrid rice occupies 9 seats, and continuously produces a record of the world's highest rice yield of 1,231.17 kg per mu. In terms of seed production, it has created and maintained 440 mu per mu. The highest production record for kilograms in China and in the world, at the same time, due to the use of the technology of the “excavation and application of ink-stained rice cytoplasm” project, the cost per kilogram of seed production is only half of that of other super rice varieties. . The main accomplishment of the "civilian" super-rice life story "Excavation and application of Yinshui-type rice sterile cytoplasm" project, Deng Yingde, a researcher at the Hunan Hybrid Rice Research Center, said that all the water-printing hybrid rice has a common "mother". From the rice cultivated in the Indonesian paddy field, Indonesia's Shuitiangu No. 6 cytoplasm, the main task of the hybrid rice researchers is to find a "mother" (CMS) and a "father" (recovery line) to cross and then Thousands of hybrid progeny selected good varieties, which will breed new hybrid rice. In the hybrid rice family, “mother” is hard to find. It requires good flowering habits and relative flowering. It also requires a high stigma exsertion rate and strong stigma vitality, which is beneficial to outcrossing pollination. In 1970, after Yuan Longping and others found sterile cytoplasm in wild rice, and after culturing wild hybrid rice in 1973, most of the breeders looked for such a “mother” from wild rice. Hybrid rice is the first time in the world that it has successfully found a super "mother" from modern cultivated rice. According to Deng Yingde, the Yinshui type hybrid rice is a sterile material used as a differential material to find new sterile cytoplasms in cultivated rice, and the water-imbipatable cytoplasm is discovered through hybridization and genetic recombination. It is a new member of the "cytoplasmic family" of sterile rice in hybrid rice. The study was presided over by Zhang Huilian, a rice breeding expert in China. The Chinese Rice Research Institute and Hunan Hybrid Rice Research Center jointly completed the research. At present, as many as 146 new combinations of Indosinian hybrid rice have been bred in China, and it is one of the most prosperous families in the world's hybrid rice family.

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