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THE INFLUENCE OF LIGHT INTENSITY ON MORPHOLOGY AND GROWTH RATE OF BEAN SEEDLINGS
Author(s) -
Van Dobben W. H.,
Van Ast A.,
Corré W. J.
Publication year - 1981
Publication title -
acta botanica neerlandica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.871
H-Index - 87
eISSN - 1438-8677
pISSN - 0044-5983
DOI - 10.1111/j.1438-8677.1981.tb00385.x
Subject(s) - seedling , relative growth rate , light intensity , botany , intensity (physics) , growth rate , dry weight , biology , plant growth , horticulture , range (aeronautics) , optics , materials science , mathematics , physics , geometry , composite material
SUMMARY Experiments with bean seedlings were made to explain the fact that plants grown at low light intensities which show a delay in plant weight reach the same relative growth rates (RGR) as controls at high light level. The experiments confirmed the conclusion of E vans & H ughes (1961) that the constancy of RGR along a rather broad light intensity range can be explained by morphogenetic effects resulting in large differences in leaf area ratio (LAR). The delay in plant weight at lower light levels appears to arise in the early seedling stage when the morphogenetic adaptations are not yet accomplished.