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

New cytoplasmic male sterile (CMS) lines with diversified CMS sources and better outcrossing traits in rice

M S. Ramesha | M I. Ahmed | B C. Viraktamath | C. H M. Vijayakumar | S Singh

Discipline: Agriculture



About 95% of the commercial hybrids in China and elsewhere are based on a wild abortive (WA) cytosterility system. This excessive reliance on a single source of sterility may give hybrids genetic vulnerability to a sudden outbreak of diseases and insect pests. Another drawback of the WA system is poor panicle exsertion and undesirable flowering behavior, which lead to low seed yield in seed production plots.