An Assembly for the Continuous Recording of Co2 Exchange and Transpiration of Whole Plants

Summary. Photosynthesis, respiration and transpiration of whole platns are continuously recorded with the assembly described. An infra‐red gas analyser is used for photosynthesis and respiration measurements, while for transpiration data psychrometers are employed, Air and leaf temperatures as well as light intensity are recorded. The assimilation chamber is constructed in such a way that whole platns of various plant species can be investigated under constant conditions of CO2 content of the air and air humidity. Some experiments with simazine and monuron are described. Un appareil pour enregistrer continuellement l'échange de CO2 et la transpiration des plantes entiéres