The Effect of Ultraviolet Light on Photosynthesis

Effect of Light Intensity and UV Radiation on Morpho-physiological Charactrestics and Biomass of Rose-Scented Geranium (Pelargonium graveolens L'Heritier)

Rose-scented geranium (Pelargonium graveolens Lchr('39')Heritier) is an important ornamental plant that is cultivated worldwide due to its valuable medicinal properties. The present research was conducted to evaluate the effect of light intensity and UV radiation on the morphological and physiological characteristics of rose-scented geranium in 2020. The experiment was performed as split plots ...

The effect of incoherent ultraviolet light on the renal capsule tissue using dynamic mechanical analysis and FTIR spectroscopy

Light Production by Green Plants

1. Green plants have been found to emit light of approximately the same color as their fluorescent light for several minutes following illumination. This light is about 10(-3) the intensity of the fluorescent light, about one-tenth second after illumination below saturation or 10(-6) of the intensity of the absorbed light. 2. The decay curve follows bimolecular kinetics at 6.5 degrees C. and re...

Some Effects of 2537 Å on Green Algae and Chloroplast Preparations

1. The kinetics of the inactivation of photosynthesis by 2537 A in Chlorella pyrenoidosa and Scenedesmus D(1) indicate that, while the destruction process is largely a first order effect, higher order effects also occur, which become evident at low exposures. In agreement with previous observations, endogenous respiration is insensitive to exposures which inactivate photosynthesis. 2. In Scened...

Effect of solar ultraviolet-B radiation during springtime ozone depletion on photosynthesis and biomass production of Antarctic vascular plants.

We assessed the influence of springtime solar UV-B radiation that was naturally enhanced during several days due to ozone depletion on biomass production and photosynthesis of vascular plants along the Antarctic Peninsula. Naturally growing plants of Colobanthus quitensis (Kunth) Bartl. and Deschampsia antarctica Desv. were potted and grown under filters that absorbed or transmitted most solar ...