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Absorption and Translocation of Dalapon-2-C14 and -Cl36 in Tradescantia fluminensis

Published online by Cambridge University Press:  12 June 2017

Chester L. Foy
Chester L. Foy*
Affiliation:
Department of Botany, University of California, Davis
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Abstract

Patterns of absorption and distribution of dalapon (2,2–dichloropropionic acid) were determined by radioautography and counting. Dalapon was absorbed through the cuticle and through the large open pores of hypostomatous leaves. Stomata were clearly the most expeditious routes of entry, but results were erratic when no surfactant was included. An anionic surfactant, sodium dioctylsulfosuccinate, enhanced both (a) cuticular and (b) stomatal plus cuticular penetration 3- to 4-fold during a 2-hr. absorption period. Studies confirmed the view that dalapon is translocated to regions of high metabolic activity and/or storage in association with and dependent upon the movement of food materials. Dalapon did not move appreciably out of albino leaves or green leaves previously depleted of food reserves, but was transported readily out of normal leaves in the light when a surfactant was used to enhance cuticular penetration.

Type
Research Article
Information
Weeds , Volume 10 , Issue 2 , April 1962 , pp. 97 - 100
Copyright
Copyright © 1962 Weed Science Society of America 

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References

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