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Distribution of Auxin in Horizontal Woody Stems in Relation to Gravimorphism

Abstract

THE response of an inclined branch of an angiosperm tree to gravitational stimulation is manifested in several ways. Usually the young apical region exhibits a negative geotropic curvature, resulting from increased growth on the lower side, while the older woody parts show outgrowth of lateral shoots and greater cambial activity on the upper side1,2.

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LEACH, R., WAREING, P. Distribution of Auxin in Horizontal Woody Stems in Relation to Gravimorphism. Nature 214, 1025–1027 (1967). https://doi.org/10.1038/2141025a0

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