优质籼型水稻不育系长丰A的选育

Breeding of Good QualityIndica Rice Male Sterile Line Changfeng A

长丰A是福建省农科院水稻研究所用"佳禾系统优质株系Y27/福伊B"育成的保持系与福伊A转育而成的野败籼型三系不育系,于2004年通过福建省科技成果鉴定。该不育系不育性稳定,不育株率100%,花粉败育率达到99.98%,柱头外露率达82.88%,其中双边外露率为18.58%。叶鞘、稃尖、柱头紫色,籽粒细长,米质优,抗稻瘟病。

A wild-abortive three-line indica rice male sterile line Changfeng A, derived from the successive back-cross of Fuyi A and a maintainer line Y27 from the cross of good quality line with Jiahe parents and Fuyi B, was developed by Rice Research Institute of Fujian Academy of Agricultural Sciences and identified in Fujian province in 2004. It has stable sterility, sterile plant rate of 100%, pollen abortive rate of 99.98%, stigma exsertion rate of 82.88% with doubeexsertion of 18.58%. Moreover, it was characterized by good rice quality, slender long-grain, resistant blast, and purple leaf sheath, glume tip and stigma.