Breeding and Application of a New Thermosensitive Conventional Special Rice Variety Qiaohong No.3
Qiaohong No.3 is a traditional red valley variety developed through multigenerational breeding using the hybrid offspring of Guanghui 122 and GUI 1025 as the paternal parent and the hybrid offspring of Hongli silk seedling and Zhong-zhonghui 629 as the maternal parent.This variety exhibits a straight plant shape and demonstrates good yield stability.Com-pared with Tianmu 19,Qiaohong No.3 achieved a yield increase of 13.0%in 2019,a yield increase point ratio of 100%.Fur-thermore,in 2020,Qiaohong No.3 also exhibited an 8.5%increase in yield,strong tilling ability,and a high seed setting rate,which could still reach 75%under high-temperature and humid climates in Hainan.Qiaohong No.3 was approved by Hainan Province in February 2021.This paper introduces the breeding process and characteristics of this variety and briefly summa-rizes its high-yield cultivation techniques.