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.