Phytochemical composition in the vegetative organs of Hemerocallis hybrida hort. ex Bergmans (Hemerocallidaceae)
The article presents the results of the study of raw materials (sugar, starch) and biologically active substances (pectin substances, catechins, saponins, flavonols, ascorbic acid) in the leaves and rhizomes of Hemerocallis hybrida plants of the Speak to me variety during seasonal development during 2013–2015. The quantitative content of the main groups of substances in underground and aboveground organs during vegetation, flowering and fruiting was determined. It was found that the presence of ascorbic acid in the leaves of Hemerocallis hybrida plants of the Speak to me variety is 1.3–1.6 times greater during the fruiting period, with a maximum value of 165.4 mg%, than during the growing season and flowering. The concentration of pectins in plants in 2013–2015 is 2.2–8.8 times higher in rhizomes than in leaves. The highest content of protopectins was observed in July in rhizomes (5.7–8.4%) and leaves in September (4.7–7%). The presence of catechins in the vegetative organs of the object of study ranged from 0.2 to 0.7%. The accumulation of saponins in leaves (30.3–42.2%) and rhizomes (30.5–43.7%) was relatively the same in 2015. The peculiarities of the content of spare substances (sugar and starch) in plant organs in different phenophases of development are noted. Sugars in the leaves are 2–5 times higher than in the rhizomes. It was found that during the slightly dry growing season of 2015, starch accumulation increased in rhizomes by more than 2–4 times compared to the excessively moist periods of 2013–2014.
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