Breeding of Nanfeng 8S,a PTGMS Line with a Marker of Green-revertible Albino Leaves in Seedling Stage in Rice

Nanfeng 8S,developed through radiation of dry seed of Pei′ai 64S with 300 Gy of 60Co γ ray by Wenzhou Academy of Agricultural Sciences,is a new photo-thermo-sensitive genic male sterile(PTGMS) line in rice.It is characteristic of a marker of green-revertible albino leaves in seedling stage.It is found that Nanfeng 8S has polymorphism to Pei′ai 64S on the loci of molecular markers OSR23 and RM414.Compared with Pei′ai 64S,it not only maintains the desirable characteristics of Pei′ai 64S such as good combining ability and moderate blast resistance,but also possesses a marker of green-revertible albino leaves from the 1st to 4th leaf in seedling stage,which is favorable for simply identifying and removing the self-pollinated male sterile plants from hybrid plants early in seedling stage.In 2010,it was technically identified by Zhejiang Provincial Crop Variety Appraisal Committee.