Effects of herbicides and growth regulators on solasodine production by Solanum aviculare and S. laciniatum Ait.

Abstract

Eighteen compounds were applied to the foliage of Solanum aviculare and S. laciniatum in an effort to increase concentrations of the steroidal alkaloid solasodine. No treatments enhanced solasodine concentration. Significantly lower alkaloid concentrations were caused by ‘Amchem 74-A398’ (structure unknown), barban 4-chlorobut-2-ynyl-3-chlorophenylcarba-mate), ‘Duphar 30-13’ (5,7-dichloro-4-ethoxycarbonylmethoxy-2,1,3-benzothiadiazole), and ‘Phosphon D’ (2,4-dichlorobenzyltributylphosphonium chloride). Marginally lower concentrations were caused by ‘AMO-1618’ (2-isopropyl-4-dimethylamino-5-methylphenyl-1-piperidene-carboxylate methyl chloride), chlorflurenol (2-chloro-9-hydroxyfluorene-9-carboxyl-methyI ester), ‘Duphar 30-15’ (7-chloro-4-ethoxycarbonylmethoxyl-1,3-benzothiadiazole), ‘Krenite’ (ammonium ethyl carbamoylphosphonate), and TIBA (2,3,5-triiodobenzoic acid). There were no effects from aminoside, ancymidol, benzimidazole, benzyladenine, 2,4-D, p-chlorophenoxy-acetic acid, ethephon, gibberellic acid, and maleic hydrazide.