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Lipid Deposition on Leaves of Canada Thistle Ecotypes

Published online by Cambridge University Press:  12 June 2017

J. M. Hodgson
J. M. Hodgson*
Affiliation:
Plant Sci. Res. Div., Agr. Res. Serv., U. S. Dep. Agr., Bozeman, MT. 59715
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Abstract

The amount of lipid present on leaves of Canada thistle (Cirsium arvense (L.) Scop.) varied due to ecotype, site where grown, and date of sampling. Thistles from a site with the greatest wind movement and greatest evaporation produced the most lipid per unit area of leaf. The relative lipid yield of ecotypes was similar at different locations. Deposition of lipid on the leaves of Canada thistle increased from the early bud stage to the first bloom and late bloom stages of growth. The amount of lipid on the leaves and previous data on the response of these ecotypes to (2,4-dichlorophenoxy) acetic acid (2,4-D) were highly correlated. Three ecotypes with the most lipid were most resistant and four ecotypes with the least lipid were most susceptible to 2,4-D spray. Two ecotypes were inconsistent in that comparison.

Type
Research Article
Information
Weed Science , Volume 21 , Issue 3 , May 1973 , pp. 169 - 172
Copyright
Copyright © 1973 Weed Science Society of America 

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References

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