hybrid rice
1964, Yuan Longping started the research on hybrid rice and found a peculiar "natural male sterile plant". Then the seeds of the first generation of male sterile materials are produced.
The first breakthrough was in 1970.
1970165438+1On October 23rd, under the guidance of Yuan Longping Thought, Li Bihu and Feng Keshan found a "wild defeat" in Nanhong Farm, Hainan, which opened a breakthrough for three-line matching.
1973 The first score was 10. 10, Yuan Longping published the paper "Progress in Breeding Three Lines by Wild Abortion", which officially announced that the "Three Lines" of indica hybrid rice in China had been completed. In 75, it was promoted nationwide.
1987 Second Breakthrough1987 July 16, under the guidance of Yuan Longping Thought, Li Bihu's assistant Deng Huafeng discovered a strange photosensitive genic male sterile rice.
1988 (1) the second achievement after two years and three generations of off-site self-crossing, a photosensitive genic male sterile line was bred in Yuan Longping, which was named "annong S- 1 photosensitive male sterile line" after provincial identification. Won the provincial 1988 10 scientific and technological achievement award.
1995 the second achievement (2) Yuan Longping has successfully developed two-line hybrid rice.
1997 broke through the technical route of super hybrid rice breeding proposed by Yuan Longping for the third time.
The third achievement (1) In 2000, Yuan Longping achieved the first stage goal of super rice breeding in China set by the Ministry of Agriculture.
The third achievement in 2004 (2) Yuan Longping has achieved the second stage goal of super rice breeding in China set by the Ministry of Agriculture, with an yield of 850 kg per mu.
Hybrid millet
1969, Cui Wensheng, as the host, started the topic of using heterosis of millet and began to study hybrid millet.
The first breakthrough of 1970 was Cui Wensheng's foot survey of more than 60 surrounding villages. In Chicheng Carving Goose Commune, 32 "Chongtian" were obtained from varieties such as red seedlings, white skin and garlic. It was identified as a male sterile spike.
Cui Wensheng, the first achievement in 1973, bred the first Kaohsiung two-line sterile line "Garlic Line 28" and its two-line hybrid "Garlic Line 28× Zhang Nong 10". Won the provincial prize in' 78. (198365438+1October 24th reporter Li Decun and Yang Yuru, Zhangjiakou Daily, 3rd edition, Footprints of an Explorer)
The second breakthrough was in 1987. Cui Wensheng and others found sterile panicles for the first time from their own hybrid combination F5 bred in 1980. This is the beginning of "millet light (temperature) sensitivity method". (Photosensitive Male Sterility of Hybrid Millet Offspring from Different Regions, No.5 of China Agriculture Bulletin by Cui Wensheng, 1989, 10, reported by Hebei Daily reporter He).
1989 (1) The photosensitive male sterile source "292" of millet hosted by Cui Wensheng passed the expert appraisal in Shijiazhuang Millet Research Institute before the National Day on September 27th. 1988. Moderator: Cui Wensheng, executor: Kong Yuzhen, Zhao Zhihai and Du Gui. The photosensitive male sterile source "292" of millet is listed as one of the top ten achievements in Hebei Province. (1989 65438+1October 29th Guangming Daily headline reporter Lin Yutang's "Cui Wensheng and others select photosensitive male sterile materials of millet")
1995 the second achievement (2) The photo-sensitive male sterile line "821"19 of millet bred by Cui Wensheng at home and abroad for the first time passed the provincial appraisal, with Cui Wensheng as the host, Zhao Zhihai as the secondary host and Du Gui and Kong Yuzhen as the executors. (On February 1995 and February 14, Zhangjiakou Daily (No.580) published an article by Ji Guan and Jiang Yun, "Baisha Academy of Agricultural Sciences has achieved fruitful scientific research-the photo (temperature) sensitive male sterile line of millet has reached the international leading level")
1997-200 1 the third breakthrough. Zhao Zhihai, the second-generation host, presided over the relay, and Cui Wensheng has been guiding the research of millet photosensitive theory. 1992 began to declare, 1997 "Study on fertility transformation mechanism of photo (temperature) sensitive genic male sterility in millet" passed the provincial appraisal. In 200 1 year, the project of "creating photosensitive (temperature-sensitive) sterility technology and law of millet" passed the appraisal.
In 2000, the third achievement (1) bred the world's first photo-temperature sensitive two-line millet hybrid "Zhangzagu 1" through two generations of relay research for nearly 40 years, and passed the provincial appraisal; The highest yield per mu exceeds 600 kg.
The third achievement in 2007 (2) "Zhangzagu No.5" has been studied by two generations for nearly 40 years, and the highest yield per mu is 865,438+00 kg. 20 10 year reached 843 kg.