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Effect of Light on the Response of Pea Seedling Roots to 2,4‐Dichlorophenoxyacetic Acid
Author(s) -
ELIASSON LENNART,
PALÉN KJELL
Publication year - 1972
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1972.tb03569.x
Subject(s) - seedling , 2,4 dichlorophenoxyacetic acid , shoot , white light , botany , biology , horticulture , lateral root , chemistry , biochemistry , physics , arabidopsis , gene , mutant , optics
White light increases the inhibition of growth in length of pea seedling roots caused by 2,4‐D. This effect is most pronounced in the case of lateral root growth. The effect is obtained also if the shoots above the cotyledons are removed and is probably due to the direct influence of light on the roots. While light also weakly enhances the inhibition of pea root growth caused by 1‐naphthylacetic acid, light does not increase the sensitivity of wheat roots to 2,4‐D or naphthylacetic acid.