Abstract
The growth of plant is influenced by temperature. In this study, we aimed to clarify the effect of night temperature on biomass production. Plants were grown under three different night-temperatures(17°C, 22°C and 27°C) for 63 days. The day temperature was 27°C. The biomass of plants grown at high night-temperature was the greatest. Net photosynthesis at the level of the whole plant was the highest in the high night-temperature treatment. RGR in the high night-temperature treatment was also the highest during d21-42. In plants grown at high night-temperature on d42, the biomass and N allocation into leaf blades at the level of the whole plant tended to increase. Thus, the greater biomass at high night-temperature was caused by higher RGR during the early stage of the growth as well as by greater biomass and N allocation into leaf blades.
