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Enhancement of Gibberellic Acid Sensitivity in Corn (Zea mays) by Fluridone and R-40244

Published online by Cambridge University Press:  12 June 2017

Robert M. Devlin
Affiliation:
Lab. of Exptl. Biol., Cranberry Exp. Stn., Univ. of Massachusetts, East Wareham, MA 02538 Institute of Pomology, Skierniewice, Poland
Marian J. Kisiel
Affiliation:
Lab. of Exptl. Biol., Cranberry Exp. Stn., Univ. of Massachusetts, East Wareham, MA 02538
Andrzej S. Kostusiak
Affiliation:
Institute of Pomology, Skierniewice, Poland

Abstract

Fluridone {1-methyl-3-phenyl-5-[3-(trifluoromethyl)phenyl]-4 (1H)-pyridinone} and R-4-0244 [1-(m-trifluoromethylphenyl)-3-chloro-4-chloromethyl-2-pyrrolidone], herbicides that block carotenoid synthesis, increase the sensitivity of corn (Zea mays L. ‘Merit’) to exogenously-applied gibberellic acid (GA). Increase in shoot length due to the application of GA to imbibing corn seeds was considerably enhanced by simultaneously applying either fluridone or R-40244. Fluridone was more active in this respect than R-40244.

Type
Research Article
Copyright
Copyright © 1980 by the Weed Science Society of America 

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