Breeding and Application of High-quality and High-yield Simiao Type Male Sterile Line Guang 8A

Abstract

Guang 8A is a wild abortion Simiao type male sterile line of indica rice with high quality and high yield, which was developed by crossing the female parent Zengcheng Simiao-8 (a high-quality indica rice possessing relationship with Guangdong wild rice) with the maintainer line 1325B, and then backcrossing with 325A after test-crossing. It was selected by the Rice Research Institute of Guangdong Academy of Agricultural Sciences, with the characteristics of good quality, strong combining ability, disease resistance and excellent comprehensive agronomic characters. Since it passed the technical identification of Guangdong Province in 2010, 44 new rice varieties have been approved or authorized by the state and provincial governments in China, including Guangdong, Guangxi, Fujian, Yunnan and Sichuan Province (Region). All of these varieties showed the characteristics of high quality, high and stable yield and strong adaptability, fully demonstrating the role of Guang 8A as the "Core Rice of Guangdong". In addition, it was selected as test material and widely applied in the basic theory researches of cultivation and physiology. Among them, Guang 8 you 165, Guang 8 you Jinzhan and Guang 8 you 2168 showed high coordination of abundance, resistance and quality in provincial regional tests and have been selected as the leading agricultural varieties in Guangdong Province for four consecutive years. From 2017 to date, the accumulative promotion area in Guangdong has reached more than 0.26 million hm2, which has extremely important production value in South China and the middle and lower reaches of the Yangtze River.

Keywords

• rice
• simiao type male sterile line
• high quality and yield
• guang 8a
• breeding