| Abstract: | Seeds of a non-dormant rice variety, Satika, were studied underdifferent natural and controlled humid conditions of storageat room temperature. Just after harvest the germination andpercentages of grain moisture were 9.2 and 30.0 respectively.Under humid conditions of storage (94 per cent) there was onlypartial break of dormancy after 42 d (32.8 per cent ger mination)with high grain moisture (23.8 per cent); in all other treatmentswhere the grain moisture varied from 4.4 to 16.4 per cent thegermination percentages were over 96 per cent after 42 d. This delaying effect of high moisture contents on the breakingof dormancy became very pronounced at about 26 per cent. Itis suggested that high moisture content may inhibit dormancy-breakingreactions possibly by interrupting air-diffusion inside theseeds. |
