The achenes’ micromorphological structure of six Artemisia species (A. absinthium, A. annua, A. argyi, A. dracunculus, A. marschalliana, and A. vulgaris) distributed in Ukraine was investigated with the aim to identify taxonomically significant carpological features for the studied species.Fruits were collected from wild plants growing in the recreation areas of Kyiv and from the plants hosted in the living collection of the M.M. Gryshko National Botanical Garden of the NAS of Ukraine. Macromorphological features were studied with a binocular microscope Stemi 2000 Carl Zeiss. The ultrastructure of the surface was studied using a scanning electron microscope JSM-6700F JEOL, in the mode of secondary electron emission. Carbon spraying was performed using vacuum thermal evaporation of the vacuum universal post VUP-5M SELMI; platinum spraying was performed with an ion-plasma etching device JFC-1600 JEOL.All investigated species have a well-expressed, true, multicellular, symmetrical, multi-row carpopodium but differ by its shape. The surface of A. annua achenes is reticulate-pitted due to the specific structure of the exocarp and the exotests located below it. Species with lobed and continuous apical rim and species without a rim around the place of attachment of the corolla were found. It was established that the primary ultrastructure of investigated fruits is caused by the shape and character of mucous cell arrangement; epidermal cells of the exocarp are mostly compressed, without clear boundaries. Mostly a thin and inconspicuous cuticle, sometimes wrinkled, with layers and small outgrowths, causes the secondary ultrastructure of these fruits. We believe that the mentioned carpological features may be used as additional criteria in combination with other features to identify studied species.
Purpose. To determine mineral composition of plants of species of the genus Artemisia (A. dracunculus L., A. abrotanum L. and A. argyi H.Lév. & Vaniot) to determine the possibility of their safe use in the food and pharmaceutical industries of Ukraine.
Methods. X‑ray fluorescence method for determining the elemental composition of plant raw materials.
Results. The content of mineral elements in plants of the genus Artemisia was determined depending on their ability to absorb elements from the soil and accumulate in the roots and organs of the aerial part was determined. The quantitative content of 21 macro- and microelements was established, and some peculiarities of their migration and distribution in the soil – roots – plant system were revealed. In particular, the aerial part of the studied plants contains K, Fe, Cu, Zn and Mn, which are the most important elements in the life of the plant organism. The content of mesoelements Ca and S is quite high. The amount of toxic elements Pb, Sr and Zr in plants is insignificant. Elements K and S accumulate in the aerial part. The content of elements in the aerial part of plants by decreasing their concentration can be represented in the form of the following series: for Artemisia dracunculus – S> K> Ca> Cl> Fe> Sr> Zn> Mn> Cu> Zr> Rb> Br> Cr; for A. abrotanum – K> Ca> S> Cl> Fe> Zn> Sr> Mn> Cu> Br> Cr> Co> Zr> Rb> Ni; for A. argyi – K> Ca> S> Fe> Cl> Sr> Zn> Mn> Co> Zr> Cu> Rb> Br> Se. The content of toxic elements in the studied plants was lower than the maximum allowable concentrations for plant raw materials and food.
Conclusions. For the first time under conditions of introduction in the M. M. Gryshko National Botanical Garden of the NAS of Ukraine in the plants Artemisia dracunculus, A. abrotanum and A. argyi the content of macro- and microelements, which are directly related to the metabolism of biologically active compounds, was determined. The peculiarities of their distribution by plant organs during the transition from soil to aboveground mass have been clarified. The obtained results can be used to evaluate and compare the quality of plant raw materials of the genus Artemisia, to determine the pharmacological properties of these plants associated with some elements of the mineral composition, and their use in the medical and food industries. The obtained data have both scientific and practical significance in the selection of economically valuable plant species for the enrichment of the cultivated flora of Ukraine.
Дослі-джено морфологічні особливості та онтогенетичний розвиток Cenchrus longispinus. Виділено чотири її життєві періоди. Визначено ознаки, за якими діагностується цей карантинний бу-р'ян та розроблено методику ранньої діагностики засміченості угідь цією рослиною. Дано рекомендації по боротьбі з карантинною рослиною C. longispinus.
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