S-Space College of Agriculture and Life Sciences (농업생명과학대학) Dept. of Plant Science (식물생산과학부) Theses (Ph.D. / Sc.D._식물생산과학부)
DEVELOPMENT OF PHOTOSYNTHESIS AND GROWTH MODELS OF SWEET BASIL AND ICE PLANT IN PLANT FACTORIES : 식물공장재배 바질과 아이스플랜트의 광합성 및 생육 모델
- 농업생명과학대학 식물생산과학부
- Issue Date
- 서울대학교 대학원
- 학위논문 (박사)-- 서울대학교 대학원 : 농업생명과학대학 식물생산과학부, 2016. 2. 손정익.
- The objective of this study was to develop photosynthesis and growth mod-els of sweet basil and ice plant under plant factory environments. For photo-synthesis, biochemical models coupled with stomatal conductance and tran-spiration were considered. Saturation and compensation points of both plants for light and CO2 were determined by regression analyses of light and CO2 response curves, respectively. In the photosynthesis of sweet basil, non-rectangular hyperbola was the most suitable for The saturation and compensation points for light and CO2 were determined as 545.3, 26.5, 728.8 and 85.05 μmol·m-2·s-1, respectively, by the modified non-rectangular hyperbola model. The maximum carboxylation rate, potential rate of electron transport, and rate of triose phosphate utilization calculated by Sharkeys regression were 102.6, 117.7, and 7.41 μmol·m-2·s-1, respectively. The results showed that the coupled biochemical model was effective for predicting the photosynthesis of sweet basil leaves comparing to other descriptive models. For ice plant under plant factory environments, the saturation and compensation points for light and CO2 were 569.5, 56.02, 632.9, and 117.2 μmol·m-2·s-1, respectively. The maximum carboxylation rate, potential rate of electron transport, and rate of triose phosphate utilization were calculated as 222.3, 234.9, and 13.0 μmol·mol-1, respectively. The parameters of minimum stomatal conductance of water vapor at the light compensation point and empirical coefficient in the BWB model could be solved as 0.0487 and 0.0012, respectively. Finally, the growth models for temperature and CO2 concentration were developed by using an expo-linear model. Adequate air temperature and CO2 concentration for sweet basil and ice plant were 25oC and 800 μmol·mol-1, respectively. From this study, the coupled biochemical model was more effective for explaining the photosynthesis of sweet basil and ice plant during the juvenile stage under plant factory conditions.