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Tanoak (Lithocarpus densiflorus) Leaf Surface Characteristics and Absorption of Triclopyr

Published online by Cambridge University Press:  12 June 2017

M. G. King  and
S. R. Radosevich
M. G. King
Affiliation:
Dep. Bot., Univ. of California, Davis, CA 95616
S. R. Radosevich
Affiliation:
Dep. Bot., Univ. of California, Davis, CA 95616
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Abstract

Absorption of triclopyr {[(3,5,6-trichloro-2-pyridinyl)oxy] acetic acid} by tanoak [Lithocarpus densiflorus (Hook. & Am.) Rehd.] leaves was investigated. Greater amounts of 14C-triclopyr were absorbed by immature leaves than mature leaves and by abaxial than adaxial surfaces. Both surfaces of immature and mature tanoak leaves were characterized. Stomata were present only on the abaxial surface and were more numerous on immature leaves than mature leaves. Immature leaves had less epicuticular wax and thinner, more permeable cuticular membranes than mature leaves. Stellate trichome densities were greater on abaxial surfaces than adaxial surfaces and on immature than mature leaves. Absorption of 14C-triclopyr was influenced by each of the leaf surface features studied.

Keywords

Epicuticular waxstomatatrichomediffusive resistance
Type
Research Article
Information
Weed Science , Volume 27 , Issue 6 , November 1979 , pp. 599 - 604
Copyright
Copyright © 1979 by the Weed Science Society of America 

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