Effect of Algicide Based on Metabolites, Allelochemicals of Aquatic Plants on Seed Germination and the Development of Seedlings of Three Species of Helophytes

Abstract

For the first time, the effect of a patented alcoholic solution of algicide on seed germination and the development of seedlings of three species of helophytes Sparganium emersum, S. glomeratum and Schoenoplectus lacustris was studied based on gallic, tetradecanoic, heptane and octane organic acids. Significant differences were found in the effect of different algicide concentrations (0.1, 1.0 and 10.0 mg/L) on seed germination and the initial stages of seedling development of three species of helophytes. We observed the stimulation of germination of Sparganium emersum seeds at a concentration of 10.0 mg/L and inhibition of this process in S. glomeratum at concentrations of 1.0 and 0.1 mg/L. No significant effect of algicide on the germination of Schoenoplectus lacustris seeds was found. According to the degree of increase in the resistance of morphological parameters of plants to the effect of different algicide concentrations, seedlings of three species of helophytes are arranged in the following series: Schoenoplectus lacustris Sparganium glomeratum S. emersum.