A Primary Study on Characteristics and Hybrid Seed Production Techniques of Quanfeng A

Quanfeng A,a new CMS line in rice,has the characteristics of steady male sterility,good flowering habits,high outcrossing rate,resistance to rice blast,high combining ability and fine grain quality.According to the growing characteristics of male parents,the high-yield seed production technology should include arranging reasonably the seeding interval,choosing appropriate heading and flowering period,constructing high-yield population structure and spraying GA3 with proper dosages in appropriate time.