Varietal difference in changing aspect of daily sink filling during the grain filling period in the rice plants
1986
Choi, H.C. (Rural Development Administration, Suwon (Korea R.). Crop Experiment Station)
The experiment was conducted to know the varietal difference in changing aspect of daily filling sink during the grain filling period of rice using three cultivars; 'Suwon 295' (japonica), 'Suwon 264' and 'IR 1317-70-1' (semi-dwarf indica) cultivated in the field and green house of the Crop Experiment Station in 1983. There was no significant varietal difference in flowering habit and duration of flowering period in each panicle. Semi-dwarf indica cultivars showed shorter days to physiological maturity of rice kernel than the japonica one. The former also displayed earlier decrease in water content of rice grain during ripening than the latter. Japonica variety revealed larger difference in ripening advancement between vigorous florets and inferior one than semidwarf indica varieties
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