Flavonoids of Wild and Introduced Plants of Several Species of the <i>Hedysarum</i> L. Genus
Flavonoid content was studied in the organs of the top part of plants of seven species of <i>Hedysarum</i> L. genus (<i>H. alpinum</i> L., <i>H. flavescens </i>Regel et Schmalh., <i>H. austrosibiricum</i> B. Fedtsch <i>H. neglectum</i> Ledeb., <i>H. theinum </i>Krasnob., <i>H. gmelinii</i> Ledeb. и <i>H. tschuense </i>A. I. Pjak et A. L. Ebel) growing in the forest-steppe zone of West Siberia (Novosibirsk) and in natural populations in the Republic of Altay and Northern Kazakhstan. The species peculiarity of the accumulation of flavonoids was observed: the largest amount of flavonoids was detected in the leaves of <i>H. flavescens</i>, <i>H. alpinum</i> and <i>H. theinum </i>species<i> </i>(up to 15.0, 13.2 and 11.1 %, respectively). In general, all the studied species of <i>Gamotion</i> section are distinguished by exclusively high flavonoid content independently of age. The representatives of <i>Multicaulia </i>section <i>H. gmelinii </i>and<i> H. tschuense</i> are distinguished by somewhat lower (in comparison with the above-indicated species) flavonoid content (2.6 and 1.8 %, respectively). The species of <i>Gamotion</i> section are to be recommended as the source of flavonoids because the introduced and wild plants are characterized by the exclusive ability to synthesize the large amount of these compounds.