Detection of UV induced plant stress by CO2/H2O gas analysis and online ethylene measurement

Photosynthesis and transpiration as well as ethylene emissions in the root zone were measured on Solenostemon scutellarioides hybrids (syn. Coleus blumei Benth). It should be figured out whether these parameters are suitable to detect UV induced plant stress. The experimental plants were treated wit...

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Bibliographic Details
Published inActa horticulturae no. 938; pp. 363 - 368
Main Authors Domurath, N, Brohm, D, Schroder, F.G
Format Journal Article
LanguageEnglish
Published International Society for Horticultural Science 01.01.2012
Subjects
ethylene
ethylene production
lamps
photosynthesis
plant stress
rhizosphere
Solenostemon scutellarioides
transpiration
ultraviolet radiation
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Summary:Photosynthesis and transpiration as well as ethylene emissions in the root zone were measured on Solenostemon scutellarioides hybrids (syn. Coleus blumei Benth). It should be figured out whether these parameters are suitable to detect UV induced plant stress. The experimental plants were treated with artificial light from HPS lamps with additional UV-A and UV-B light. It was not possible to make clear statements about the stress status of the plants on the basis of the photosynthesis and transpiration measurements. The ethylene values of unstressed plants were in a clear daily rhythm in accordance with other studies. It was not possible to reproduce the switching cycles of the UV lamps in the ethylene values. Watering, both with nutrient solution and deionised water, caused changes in the C2H4-budget. The HPS + UV-A variant responded with the strongest amplitude to nutrient solution. In the subsequent period mean values remained at 120% of the original ethylene levels for several hours.
Bibliography:http://www.actahort.org/
ISSN:0567-7572
DOI:10.17660/ActaHortic.2012.938.47