クロロフィル蛍光計測法によるシバ (Zoysia matrella Marr.) 群落の光合成速度の定量評価

概要

論文の詳細を見る
Chlorophyll fluorescence measurement technique is widely used as a powerful tool in obtaining dynamic information on photosynthetic activities in non-destructive and non-invasive way. And, it has been reported that electron transport rate (ETR), one of the most popular chlorophyll fluorescence parameters, can be used as a relative index of photosynthetic rate in C4 plant leaves because of their photorespiration is negligible. In this study, we applied for the first time ETR to assess photosynthetic rate of turf grass (Zoysia matrella Marr.) canopy. As a result, we observed a direct correlation between relative ETR (rETR: rETR=PPF×ΦPSII) defined in this study and gross photosynthetic rate under the artificial light condition in our lab. Furthermore, based on the lab data, we tried to diagnose the effects of water-stress on turf grass canopy under the sun and then successfully detected a significant decrease in gross photosynthetic rate of turf grass canopy by measuring its rETR.
生態工学会の論文
2007-04-30