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Promotion of Germination of Dormant Weed Seeds by Substituted Phthalimides and Gibberellic Acid

Published online by Cambridge University Press:  12 June 2017

James D. Metzger
James D. Metzger*
Affiliation:
U.S. Dep. Agric., Agric. Res. Serv., Metabolism and Radiation Res. Lab., Fargo, ND 58105
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Abstract

Both gibberellic acid and the substituted phthalimide AC-94377 [1-(3-chlorophthalimido)cyclohexanecarboximide] actively promoted germination of dormant seeds in five species out of nine. The species that responded to both compounds included wild oat (Avena fatua L.), wild mustard [Brassica kaber (DC.) L.C. Wheeler], curly dock (Rumex crispus L.), field pennycress (Thlapsi arvense L.) and tansy phacelia (Phacelia tanacetifolia L. Benth.). on a weight-per-weight basis, the ability of AC-94377 to stimulate germination was equal to, or greater than, GA3. The other two substituted phthalimides tested, AC-92803 [2-(3-chlorophthalimido)-2-methyl-2-isobutyl-acetamide] and AC-99524 [1-tetrahydrophthalimido-cyclohexane-carboximide], had either slight or no stimulatory activity.

Keywords

Avena fatuaBrassica kaberRumex crispusThlapsi arvensePhacelia tanacetifoliagrowth regulatorshormones
Type
Research Article
Information
Weed Science , Volume 31 , Issue 3 , May 1983 , pp. 285 - 289
Copyright
Copyright © 1983 Weed Science Society of America 

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