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- Title
The Influence of Red Light on the Growth of Pea Seedlings. An Attempt to Localize the Perception.
- Authors
Björn, Lars Olof; Virgin, Hemming I.
- Abstract
Dark-grown pea seedlings have been irradiated for short periods (10 min. a day) beginning with the fourth day after planting. The light used had its maximum energy around 660 mμ. The effect of the irradiation on unscreened plants consists of a decrease in the lengths of the epicotyl (first internode), previously reported on many occasions, an increase in the length of the internodes higher up, and also of an increase in the development of the leaves. By screening different parts of the seedling during irradiation, the effect of the red light varies depending on which parts are exposed to light. There seem lo be no distinctly definable areas of radiation perception. The nodes, however, are more light-sensitive than the internodes. The distribution of the areas giving the strongest response to red irradiation seem to agree with the sites for the formation of the green and yellow pigments of the plant.
- Subjects
PEAS; IRRADIATION; PLANTS; LEAVES; RADIATION; COLORED light; RED
- Publication
Physiologia Plantarum, 1958, Vol 11, Issue 2, p363
- ISSN
0031-9317
- Publication type
Article
- DOI
10.1111/j.1399-3054.1958.tb08471.x