Journal ArticleDOI
Comparison of responses of bean, pea and rape plants to UV-B radiation in darkness and in light
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In this article, the effect of UV-B radiation on leaves of bean, pea and rape plants was studied, and the results showed that the effects of UV radiation on the leaves of these plants increased the thickness of leaves, described as SLW.Abstract:
Effect of UV-B radiation on leaves of bean, pea and rape plants was studied. UV-B radiation (11.2 kJ·m−2) induced more distinct reduction of the primary photosynthesis activity when applied in darkness than the same UV-B dose, extended in time, and applied with photosynthetic active radiation (PAR). The pea plants were more susceptible to UV-B in darkness, but in the presence of PAR their tolerance was higher. The CO2 fixation in the bean and rape plants, exposed to UV-B was decreased, but for the pea plants it remained unchanged. The UV-B irradiation caused an increase in the content of ultraviolet-absorbing pigments. Additionally, the bean plants grown at UV-B increased the thickness of leaves, described as SLW.read more
Citations
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Journal ArticleDOI
Field crop responses to ultraviolet-B radiation: a review
TL;DR: An overview of existing literature on the ultraviolet-B (UV-B) radiation effects on field crops is provided and an increase in understanding of basic plant physiology was gained from most of the studies, while studies are needed to quantify the effects of UV-B radiation on crops in order to develop dose response functions that can facilitate development of dynamic simulation models for use in UV- B and other environmental impact assessments.
Journal ArticleDOI
Photosynthesis and yield in cotton ( Gossypium hirsutum L.) Var. Vikram after exclusion of ambient solar UV-B/A
TL;DR: Exclusion of solar UV proved to be beneficial in enhancing the yield of cotton plants and enhancement in the vegetative growth and yield could be related to enhanced rate of photosynthesis in the leaves.
Journal ArticleDOI
Comparison of Chlorophyll Fluorescence Parameters of Cucumis Sativus and Mentha Piperita Leaves Exposed to Short-Term UV-B Irradiation
Book ChapterDOI
Effect of UV-B Radiation on Leguminous Plants
TL;DR: In this paper, the authors have shown that the presence of water vapors in the stratosphere could degrade the ozone layer as suggested by recent reports, which may lead to more penetration of UV-B causing adverse effects on growth, physiology and yield of many agricultural crops.
Comparison of chlorophyll fluorescence parameters of cucumis sativus and mentha piperita leaves exposed to short-term uv-b irradiation
TL;DR: Generally, photosystem II of peppermint leaves appeared more tolerant to the applied UV-B radiation than in cucumber leaves, and Fv/Fo and Rfd were reduced more than other values, indicating inhibition of the oxygen-evolving complex and cooperation between the light and dark photosynthesis reactions as the primary targets ofUV-B.
References
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Book ChapterDOI
Chlorophylls and carotenoids: Pigments of photosynthetic biomembranes
TL;DR: In this article, the spectral characteristics and absorption coefficients of chlorophylls, pheophytins, and carotenoids were analyzed using a two-beam spectrophotometer.
Book ChapterDOI
Chlorophyll fluorescence as a nonintrusive indicator for rapid assessment of in vivo photosynthesis
TL;DR: In the past, ecophysiologically oriented photosynthesis research has been governed by gas exchange measurements, mainly involving sophisticated (and costly) systems for simultaneous detection of CO2 uptake and H2O evaporation.
Journal ArticleDOI
Chlorophyll fluorescence as a tool in plant physiology : II. Interpretation of fluorescence signals.
G. H. Krause,E. Weis +1 more
TL;DR: Revue et interpretation des analyses de la fluorescence chlorophyllienne et interet pour les processus photosynthetiques dans les feuilles intactes ou chez les Algues.
Journal ArticleDOI
Effects of UV-B radiation on photosynthesis and growth of terrestrial plants.
Alan H. Teramura,Joe H. Sullivan +1 more
TL;DR: A better understanding of the mechanisms of tolerance to UV-B radiation and of the interaction betweenUV-B and other environmental factors is needed in order to adequately assess the probable consequences of a change in solar radiation.
Journal ArticleDOI
Ultraviolet radiation and plants: burning questions
TL;DR: The kinds of damage that UV radiation can inflict on plants, the mechanisms plants use to perceive and respond to UV radiation, and the ecological relevance of UV light wavelengths that have been used in the experimental analysis of plant responses toUV radiation are discussed.