Identification of restorers and maintainers for development of rice hybrids

Fifty three (53) rice genotypes were crossed with two CMS lines viz., IR58025A and IR68888A during kharif 2011. These F1 populations were evaluated for their restorability/maintainability during summer 2012. From these 53 test crosses, fifteen restorers and only one maintainer were identified for use in hybrid rice breeding programs. Most of the genotypes were found partial restorer and partial maintainer. The SSR marker RM6100 has been used to confirm the presence of fertility restorer gene Rf4 in the germplasm lines.