Abstract
The effect of indole-3-acetic acid and phenylacetic acid upon the thickening growth of epicotyl, growth of lateral buds, and attraction of benzyl-[8-14C]-adenine from roots was studied in 5 d-old etiolated pea seedlings. The morphoregulative ability of phenylacetic acid in apical dominance was similar to that of indole-3-acetic acid, however, it is necessary to use much higher concentrations of phenylacetic acid than of indole-3-acetic acid. Phenylacetic acid applied exogenously to stumps of decapitated plants was able to attract benzyl-[8-14C]-adenin from roots similarly as indole-3-acetic acid. However, in contrast to indole-3-acetic acid it does not prevent the flow of benzyl-[8-14C]-adenine into lateral buds and even promotes it.
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