Abstract

It has been reported that, in rice plants, the growth rate and metabolism are markedly inhibited at temperatures above the chilling temperature, in the range between about 15-20°C. Nevertheless, there are few reports on the mechanism of the effects of low-temperature stress on growth and the accompanying metabolic changes. Therefore, we have investigated the effects of low temperature on the rate of growth and increases in levels of chlorophyll and proteins, the most basic biochemical parameters of cellular functions, in the developing green leaves of two rice cultivars with different sensitivities to low temperatures, namely, a low-temperature sensitive variety, Indica type IR8, and a low-temperature tolerant variety, Japonica type Somewake

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