AbstractWork is described showing that ethylene does not move about the plant in physiologically significant amounts due to resistance in the longitudinal direction and loss by emanation from the surface of the plant. Nevertheless, changes in ethylene concentration in one part of the plant may influence concentrations in other parts. It is shown that the partition coefficients for ethylene between air and various plant organs are relatively high and may change in the course of development. These results are discussed in relation to compartmentation of ethylene within the plant and the possible implications of such compartmentation for the control of plant growth and development.
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