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Epicuticular Wax on Goldenweed (Isocoma spp.) Leaves: Variation with Species and Season

Published online by Cambridge University Press:  12 June 2017

H. S. Mayeux Jr. ,
W. R. Jordan ,
R. E. Meyer  and
S. M. Meola
H. S. Mayeux Jr.
Affiliation:
Agric. Res., Sci. Ed. Admin., U.S. Dep. Agric., Temple, TX 76501
W. R. Jordan
Affiliation:
Texas Agric. Exp. Stn., Temple
R. E. Meyer
Affiliation:
Agric. Res., Sci. Ed. Admin., U.S. Dep. Agric., College Station, TX 77843
S. M. Meola
Affiliation:
Agric. Res., Sci. Ed. Admin., U.S. Dep. Agric., College Station, TX 77843
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Abstract

Large quantities of viscous, non-crystalline epicuticular waxes were observed on leaves of three goldenweed (Isocoma) species. Based on weights of residues from single 15-s chloroform extractions, wax on leaves of field-grown plants of the least herbicide-susceptible species, common goldenweed [I. coronopifolia (Gray) Greene], increased from 71 mg/dm2 in March to 286 mg/dm2 in October, which was two to four times greater than the amount present on other goldenweed species. Similar quantities were produced by leaves of glasshouse-grown plants, but maximum wax production occurred during summer months. The epicuticular wax of fully expanded leaves decreased with age. The amounts of epicuticular wax on individual plants growing within a field population varied by a factor of four.

Keywords

Isocoma coronopifoliaI. DrummondiiI. Wrightii
Type
Research Article
Information
Weed Science , Volume 29 , Issue 4 , July 1981 , pp. 389 - 393
Copyright
Copyright © 1981 by the Weed Science Society of America 

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References

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