Abstract
Synopsis Since several environmental factors affect the functioning of the photosynthetic system, the status of the photosynthetic apparatus is a good indicator of the plant in terms of stress and stress adaptation. The measurement of chlorophyll fluorescence with a portable fluorimeter has been shown to be a useful non-destructive method for the investigation of the structure and function of the photosynthetic apparatus. A quantitative analysis of fluorescence emission, called the JIP-test, has also been introduced by which the behaviour of the photosynthetic system in response to environmental changes can be monitored. A pilot trial was conducted to determine the effect of light, water and nutrient stress on the fluorescence emission of Eucalyptus grandis seedlings. Flourescencc measurements were made on potted plants with a Hansatech Plant Efficiency Analyser, everyone to two days from stress initiation until trial termination. The results indicate that water and light stress in E. grandis seedlings ca...
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