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  • Author or Editor: G. R. Leather x
  • Journal of the American Society for Horticultural Science x
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Abstract

To explain the synergistic interaction on abscission between 7-oxabicyclo(2,2,l)heptane-2,3-dicarboxylic acid (endothall) and (2-chloroethyl)phosphonic acid (ethephon), absorption and translocation of foliarly-applied 14C-ethephon alone or together with endothall were determined with (Phaseolus vulgaris L. cv. Red Kidney) plants using liquid scintillation, autoradiography, and gas chromatography. More l4C-ethephon remained in the treated leaf when applied in combination with endothall than when applied alone. These results suggest that the synergistic interaction between endothall and. ethephon can be attributed to transport inhibition thereby increasing the availability of ethylene for the abscission process.

Open Access