Assessment of status of seed dormancy in traditional rice varieties

Abstract

A study was conducted to assess the status of seed dormancy and its duration in 16 traditional rice varieties by evaluating the germination and viability per cent at five days interval from harvest to the attainment of maximum standards. The results showed that the freshly harvested seeds in 14 traditional rice varieties showed dormancy and it reduced naturally over a period of time during storage. The varieties viz., Chinnar, Kandasaali and Sorna have expressed strong dormancy of more than 30 days in comparison to other varieties. Whereas, the varieties viz., Poovan samba and Varigarudan samba have recorded with no dormancy in seeds.