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Effect of Field Violet (Viola arvensis) Growth Stage on Uptake, Translocation, and Metabolism of Terbacil

Published online by Cambridge University Press:  12 June 2017

Douglas J. Doohan ,
Thomas J. Monaco  and
Thomas J. Sheets
Douglas J. Doohan
Affiliation:
Dep. Hortic. Sci., North Carolina State Univ., Raleigh, NC 27695-7609
Thomas J. Monaco
Affiliation:
Dep. Hortic. Sci., North Carolina State Univ., Raleigh, NC 27695-7609
Thomas J. Sheets
Affiliation:
Dep. Hortic. Sci., North Carolina State Univ., Raleigh, NC 27695-7609
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Abstract

Uptake, translocation, and metabolism of 14C-terbacil was investigated in 12-leaf (tolerant) and 3-leaf (susceptible) field violet plants. Field violets with 12 leaves absorbed less 14C-terbacil g−1 of fresh weight from solution culture than did plants with three leaves. Plants with three leaves translocated twice as much radioactivity to foliage than did plants with 12 leaves. Most 14C in roots (77%) and foliage (57%) of field violet plants with 12 leaves was in polar metabolites. Metabolism studies indicated that most 14C (79%) in foliage extracts from field violet plants with three leaves was 14C-terbacil. Polar metabolites were not detected in roots of field violet plants with three leaves.

Keywords

Terbacil, 5-chloro-3-(1,1-dimethylethyl)-6-methyl-2,4(1H, 3H)-pyrimidinedionefield violet, Viola arvensis Murr. VIOAR #3Phytotoxicity14Cuptaketranslocationmetabolism
Type
Physiology, Chemistry, and Biochemistry
Information
Weed Science , Volume 40 , Issue 2 , June 1992 , pp. 180 - 183
Copyright
Copyright © 1992 by the Weed Science Society of America 

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