Breeding of Super High-yield Japonica Hybrid Rice "Qiuyou Jinfeng"
Qiuyou Jinfeng, a new super-high-yield japonica hybrid rice variety bred independently by scientists in Shanghai, has reached 801.9 kg per mu after three years of demonstration planting, and has passed expert acceptance a few days ago.
On December 31, 2006, the reporter learned in the Agricultural Science Research Institute of Minhang District, Shanghai that the cultivation of the excellent variety of "Qiuyou Jinfeng" was based on the genetic differences between indica rice and japonica rice parents, using excellent late japonica male sterile lines as female parents. Excellent indica rice and excellent japonica rice restorer lines were selected as male parents, and a new combination was prepared by two-line and three-line method through "indica-japonica bridging" technology.
"Qiuyou Jinfeng" not only has large and strong ears, sturdy stems and plump rice grains, but also showed strong lodging resistance, disease resistance and insect resistance in the demonstration planting in the past three years, especially withstood the test of "rice planthopper". Its taste is fragrant and soft, and the rice quality meets the first-class standard of high-quality rice issued by the Ministry of Agriculture.
Experts from Shanghai Science and Technology Commission believe that hybrid japonica rice has a lot of room for development in the middle and lower reaches of the Yangtze River, and hybrid japonica combinations are very popular in Shanghai and its surrounding areas because of their high yield and excellent rice quality. Qiuyou Jinfeng has produced more than 19000 kilograms of seeds in 2006 and can plant about 10, 000 mu in 2007. Demonstration zones will be established in 10 districts and counties in Shanghai to speed up the promotion and development of new combinations.
- Prev
Changyou No.1 (Japonica Hybrid Rice)
"Changyou 1" is a new "three-line" high-quality hybrid japonica variety bred by the Institute of Agricultural Sciences of Changshu City, Jiangsu Province in 1998. It was approved by Jiangsu Province in January 2002 and National examination and approval in November 2003 (National examination and approval of Rice 2003068). At the same time, the male sterile line Wuyunjing 7 A has applied for new variety protection, numbered CN20010203.6. Because the variety has the advantages of good quality, high yield, strong resistance, wide adaptability and high yield of seed production, it has been late in Jiangsu, Zhejiang, Shanghai, Anhui, Hubei and other provinces.
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Breeding and Application of Tianfengyou 269, a New Indica Hybrid Rice combination with High yield, good quality and Multi-resistance
The main results are as follows: (1) Tianfeng A, which was bred by Tianfeng you 269 (formerly Yanyou 269), which was bred by Jiangsu Coastal Institute of Agricultural Sciences and Guangdong Academy of Agricultural Sciences, and Yanhui 269, a self-breeding restorer line of our institute, was bred in 2002, a new indica hybrid rice combination with high yield, good quality and multi-resistance. Its self-breeding restorer line Yanhui 269, in the summer of 1995, Yanhui 559 was used as female parent and Yanhui 469 (intermediate material of our institute) as male parent. 26 hybrids were obtained and brought to Sanya in Hainan in the winter of the same year.
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