2026-03-11T18:43:33Z https://u-ryukyu.repo.nii.ac.jp/oai

oai:u-ryukyu.repo.nii.ac.jp:02015526 2025-03-11T11:27:21Z 1642838163960:1642838308020:1642838308479:1642838329921 1642838403551:1642838412624

ソテツの光合成特性 Photosynthetic characteristics in Cycas revolute Thunb. 川満, 芳信 上原, 直子 泉, 裕巳 Kawamitsu, Yoshinobu Uehara, Naoko Izumi, Hiromi open access 沖縄農業研究会 In this paper, we measured the effect of photon flux density, leaf temperature, and CO_2 concentration on the photosynthetic rate, stomatal conductance, and transpiration rate in the leaf of cycad (Cycas revolute Thunb.), and optimum environmental conditions and air cleaning effect as a indoor appreciation plant were examined. The maximum value of photosynthetic rate at high photon flux density was 4.2 μmol m^<-2>s^<-1>, and there was the optimum temperature of photosynthetic rate at 28-30℃, and it has comparatively been stabilized between 23 to 31℃. The photosynthetic rate was increased rectilinear, even if the CO_2 concentration was increased to near 800ppm, and it tended to saturate afterwards. The A/Ci Curve was rectilinear in the range of measured CO_2 concentration. It was suggested that the leaf of Cycad is efficiently fixed CO_2, when the CO_2 concentration in the room is high. Since the leaf respired the oxygen simultaneously, it works for the air cleaning of the room. 論文 沖縄農業研究会 Okinawa Agriculture Research Society 2000-06 jpn journal article VoR http://hdl.handle.net/20.500.12000/0002015526 https://u-ryukyu.repo.nii.ac.jp/records/2015526 1344-1477 AN00083297 沖縄農業 34 2 18 22 https://u-ryukyu.repo.nii.ac.jp/record/2015526/files/577.pdf