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Ultima descărcare din IBN: 2022-06-01 16:43 |
Căutarea după subiecte similare conform CZU |
582.675.1:581.1 (1) |
Botanică sistematică (855) |
Fiziologia plantelor (526) |
SM ISO690:2012 IVANOVA, Raisa, ŢIŢEI, Victor. Biological characteristics and accumulation of polyphenolics in Polygonum sachalinense introduced in the flora of the Republic of Moldova. In: Oltenia - studii si comunicari stiintele naturii, 2014, nr. 1(30), pp. 53-56. ISSN 1454-6914. |
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Oltenia - studii si comunicari stiintele naturii | ||||||
Numărul 1(30) / 2014 / ISSN 1454-6914 | ||||||
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CZU: 582.675.1:581.1 | ||||||
Pag. 53-56 | ||||||
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This research was designed to study some biological characteristics of autochthonous variety GIGANT of Polygonum sachalinense F. Schmidt ex Maxim (Giant knotweed) introduced and cultivated in the Republic of Moldova. The accumulation of polyphenolics in both under-ground and aerial parts of a plant was also investigated. The total polyphenolic content was determined by the Folin-Ciocalteu procedure. For chemical analyses we used fresh collected samples of rhizomes, leaves and flowers. The results of biological indexes determination showed that in the natural conditions of R. Moldova the plants developed intensively, the productivity of aerial biomass reaching 8.99 kg/m2 or 2.69 kg/m2 of dry matter. Plants were not affected by atmospheric drought, diseases and pests. The flowering phase begins after 135…150 days of vegetation, but the plant does not form fertile seeds. The variety GIGANT can be multiplied only by vegetative procedure from rhizomes or cuttings. The accumulation of polyphenolic substances in leaves took place in diverse periods of vegetation at different rates, but the increase of polyphenolics content in rhizomes was constant. In the period of flowering the richest polyphenolics content was determined in flowers about 34.90±0.55 mg per g of fresh weight, which decreased deeply in the period of seed formation (approximately 5 times). |
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Cuvinte-cheie Polygonum sachalinense, variety GIGANT, biological characteristic, polyphenolics, Polygonum sachalinense, soiul GIGANT, particularităţi biologice, polifenoli |
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