Morphological, physicochemical, and bioactive characteristics of Hypericum perforatum genotypes, and their classification by GT-Biplot approach

Abstract

Thirty-three different Hypericum perforatum genotypes were characterized in terms of morphological (plant height, herbage yields), physicochemical (ash, cellulose, protein, and colour), and bioactive properties. The antioxidant and antibacterial capacity were also assessed. All genotype samples were characterized as flower part and whole plant (aerial part). It was observed that the plant height ranged between 21.6 and 96.6 cm and whole plant drog yield was in the range of 11–146 g. Bioactivity showed wide distribution for the samples and all bioactive parameter values were measured as lower for the whole plant compared to the flower part. Total phenolic content ranged between 60.39-110.54 and 49.08–89.53 mg GAE/g for the flower part and whole plant, respectively. Flower extracts also showed good inhibition activity against some Gram (+) bacteria. The GT-Biplot statistical mathematical classification approach was applied to reveal the promising genotypes.