ISHS Acta Horticulturae 547: III International Symposium on Rose Research and Cultivation
MODELING DIURNAL VARIATION OF WHOLE-PLANT PHOTOSYNTHESIS OF GREENHOUSE ROSES |
| Authors: | S.H. Kim, J.H. Lieth |
| Keywords: | Rosa hybrida ‘Kardinal’, crop simulation, gas exchange, whole-plant chamber, extinction coefficient |
| Abstract:
Whole-plant photosynthetic rate of rose (cv. Kardinal) was measured with an open system consisting of a computer-controlled data acquisition system and an infrared gas analyzer (IRGA). The system was used to monitor diurnal patterns of whole-plant gas exchange in response to environmental variables and a model to simulate this was constructed. A model for leaf photosynthesis was calibrated and scaled up to the whole-plant level. The simulated whole-plant photosynthesis compared well with the observed data. The model can be used for identifying the impacts of varying environmental factors on whole-plant or canopy photosynthesis of roses in the greenhouse. | |
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