Community Research and Development Information Service - CORDIS

FP5

PLANTS Report Summary

Project ID: IST-2001-38900
Funded under: FP5-IST
Country: Ireland

Determination of plant's suitability to light conditions using ETR threshold levels

This is a method to determine whether a plant would be best suited to shade or light conditions.

Generally speaking domestic plants are bought from garden centres and nurseries and the buyer is dependent on the producer informing them as to what conditions would suit the plant. Very often the plant is not grown in these optimum conditions due to space and production pressure constraints.

Hence shade and light plants bought commercially can give Electron Transport Rate (ETR) readings that are not distinguishable as they have adapted to less than favourable conditions.

For this method, when plants are bought they need to be conditioned to either shade or light conditions. Using chlorophyll fluorescence an ETR curve is acquired. This is then analysed to determine the inflection point of the curve (inflection Photosynthetically Active Radiation (PAR)).

If the inflection PAR is greater than 200 PAR then the plant optimum conditions would be in a sunlight area. If the inflection PAR is less than 200 then the plant is best suited to a shaded area.

Interior and exterior landscapers could use this method to determine the best positioning of plants.

Related information

Reported by

Plant Science, UCC
Butler Building, Distillery Fields, North Mall
Cork
Ireland
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