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Chlorsulfuron Induction of Leaf Abscission in Velvetleaf (Abutilon theophrasti)

Published online by Cambridge University Press:  12 June 2017

Larry H. Hageman  and
Richard Behrens
Larry H. Hageman
Affiliation:
Res. Biol., E. I. DuPont de Nemours & Co., Inc., Wilmington, DE 19898
Richard Behrens
Affiliation:
Dep. Agron. and Plant Genet., Univ. of Minnesota, St. Paul, MN 55108
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Abstract

In velvetleaf (Abutilon theophrasti Medic. ♯3 ABUTH), accelerated leaf abscission was a conspicuous response following foliar chlorsulfuron {2-chloro-N-[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino] carbonyl] benzenesulfonamide} treatment at 35 g ai/ha. Leaf abscission of treated plants was decreased by AVG [L-2-amino-4-(2-aminoethoxy)-trans-3-butenoic acid], an inhibitor of endogenous ethylene production. Chlorsulfuron stimulated ethylene production in the abscission zone and leaves of treated plants and also increased cellulase activity in the abscission zone. Accelerated leaf abscission of velvetleaf following chlorsulfuron application appears to result from chlorsulfuron-induced increases in endogenous ethylene production and cellulase activity.

Keywords

AVGcellulaseethephonethyleneABUTH
Type
Physiology, Chemistry, and Biochemistry
Information
Weed Science , Volume 32 , Issue 1 , January 1984 , pp. 132 - 137
Copyright
Copyright © 1984 by the Weed Science Society of America 

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