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Evaluation of Precursors and Analogs of Strigol as Witchweed (Striga asiatica) Seed Germination Stimulants

Published online by Cambridge University Press:  12 June 2017

Armand B. Pepperman ,
William J. Connick Jr. ,
Sidney L. Vail ,
A. Douglas Worsham ,
Alexander D. Pavlista  and
Donald E. Moreland
Armand B. Pepperman
Affiliation:
U.S. Dep. Agric, New Orleans, LA 70179
William J. Connick Jr.
Affiliation:
U.S. Dep. Agric, New Orleans, LA 70179
Sidney L. Vail
Affiliation:
U.S. Dep. Agric, New Orleans, LA 70179
A. Douglas Worsham
Affiliation:
Dep. Crop Sci., North Carolina State Univ., Raleigh, NC 27650
Alexander D. Pavlista
Affiliation:
Dep. Crop Sci., North Carolina State Univ. Currently Res. Biol., Plant Growth Regulator Discovery, Am. Cyanamid Co., Princeton, NJ 08540
Donald E. Moreland
Affiliation:
U.S. Dep. Agric. North Carolina State Univ., Raleigh, NC 27650
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Abstract

Thirty compounds that are precursors, analogs, derivatives, or fragments of strigol were prepared and tested for their activity as witchweed [Striga asiatica (L.) Kuntze] seed-germination stimulators. Five compounds showed significant stimulatory activity. Among these were 5-ethoxy-3-methyl-2(5H)-furanone, 3-hydroxy-2,6,6-trimethylcyclohex-1-ene-1-carboxaldehyde, a two-ring analog of strigol, and two isomers of a three-ring analog. Several of the other 25 compounds showed slight and/or non-reproducible activity when dimethylsulfoxide was used as the carrier at 0.1% (v/v) in aqueous solutions. Compounds with such diverse structures as trimethylcyclohexenes, furanones, and bicycloheptenones were among those that possessed some stimulatory activity.

Keywords

Striga luteaparasitic plantssuicidal germinationweed control
Type
Research Article
Information
Weed Science , Volume 30 , Issue 5 , September 1982 , pp. 561 - 566
Copyright
Copyright © 1982 by the Weed Science Society of America 

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References

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