title: New light on the cholodny-went theory.
abstract: The existence of different auxin sensitivities in epidermal and subepidermal tissues (KV Thimann, CL Schneider 1938 Plant Physiol 25: 627-641) suggests a refinement to the Cholodny-Went theory which overcomes some of the difficulties associated with it. A model is presented to account for the inverse tropic responses of shoots and roots through differences in the respective locations of the auxin-sensitive tissues.
authors: The Macaulay Institute for Soil Research, Craigiebuckler, Aberdeen, AB9 2QJ, Scotland.
authors: I R
authors: IR
authors: Macdonald
authors: J W
authors: JW
authors: Hart