Abstract
We will report how plants acclimatize photosynthetic characteristics to long-term irradiation containing blue component. Rice plants were grown with two light quality, red light (460 μmol m-2 s-1) alone and mixture of red (370 μmol m-2 s-1) and blue (90 μmol m-2 s-1) light, for one month.
Rubisco, chlorophyll and total-N contents in the leaf blades were higher in the mixed light-grown plants than in the red light-grown plants. However, linear regression lines of rubisco or chlorophyll content against total-N content tended to be same between the two light treatments. These results suggested that the increase in the photosynthetic capacity of rice plants grown under the mixed light was due to the increase in total-N content of the leaf blades, not due to the specific partitioning of N to key components of photosynthesis.
