HomeInternational Rice Research Notesvol. 23 no. 2 (1998)

Genetic, histological, and histochemical evidence for reversion to partial fertility in WA CMS line IR54752A

S L. Kumari | M. Mahadevappa

Discipline: Agriculture, Genetics



The widely used wild abortive (WA) cytoplasmic male sterile (CMS) line IR54752A for the hybrid rice program at IRRI and in India was reported to be unstable for male sterility characters and therefore restricted to use in seed production. We investigated the causes for the breakdown in sterility. All evidence gathered suggested the presence of multiple nuclear genes (minor) for fertility in the CMS line.