Decreased lipolysis in peanuts by a pyridazinone bioregulator |
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Authors: | Allen J. St. Angelo Robert L. Ory Falk R. Rittig |
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Affiliation: | 1. Southern Regional Research Center, 1100 Robert E. Lee Boulevard, 70179, New Orleans, Louisiana 2. BASF Aktiengesellschaft, Landwirtschaftliche Versuchsstation, D-6703, Limburgerhof, Federal Republic of Germany
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Abstract: | Peanut,Arachis hypogaea, plants were treated in the field with the bioregulator BAS 105 00W, 4-chloro-5-dimethylamino-2-phenylpyridazin-3-one, a substituted pyridazinone, at different times of development. The seeds were harvested, dried, hand-shelled, and analyzed for lipoxygenase activity and conjugated diene hydroperoxide content. Reduced lipoxygenase activity occurred when the bioregulator was applied to the plants at flowering and pegging. The conjugated diene hydroperoxide content decreased the most in peanuts when the bioregulator was applied at pegging. The apparent Km for lipoxygenase of treated peanuts with linoleic acid as substrate was the same as that for untreated peanuts. |
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