Jiufeng A is a new WA-type early cropping indica CMS line in rice, which is developed by crossing Jin 23A to a selected F4 plant of 688 B/Fuyi B through successive selection arid backcrossing.

• 摘要以金23A为母本，688B/福伊B的F4代单株为父本测交，经多代择优回交，育成早熟籼型三系不育系九丰A。