ISHS Acta Horticulturae 810: IX International Vaccinium Symposium
STUDY ON THE INFLUENCE OF THREE PRODUCTION METHODS ON BLUEBERRY PHOTOSYNTHESIS |
| Authors: | Yadong Li, Chen Wei, Zhang Zhidong, Liuhaiguang, Wulin |
| Keywords: | blueberry, 'bluecrop', culturing pattern, photosynthetic characteristic |
| Abstract:
The influence of three production methods (open-field, glasshouse, plastic house) on photosynthetic parameters of Vaccinium corymbosum ‘Bluecrop’ were compared, including net photosynthetic rate (Pn), stomatal conductance (Gs), and intercellular CO2 concentration (Ci). For all production methods the diurnal curve for ‘Bluecrop’ Pn had two peaks and a midday depression of Pn. The minimum Gs under the three production methods occurred at 14:00 and the time of maximum Gs varied with production method. The maximum Gs for plants grown in an open-field occurred at 08:00 and 18:00 and the maximum Gs for plants grown in the glasshouse and plastic house occurred at 10:00 and 16:00. The Ci in plants in all production methods decreased between 06:00 and 10:00, remained low between 10:00 and 16:00, and increased after 16:00. The decline in Pn between 10:00 and 14:00 contributed to stomatal-limitation, while there was no stomatal limitation to Pn at any other time during the day. | |
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