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© В.В. Старицын, мл. науч. сотр.

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Институт экологических проблем Севера УроРАН, наб. Сев. Двины, 23, г. Архангельск, Россия, 163002; e-mail: corwin87@mail.ru

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Поступила 29.01.14

UDC 581.5

Productivity and Vitamin C Content in Blueberry (Vaccinium Myrtillus L.) and Cowberry (Vaccinium Vitis-Idaea L.) in the Plesetsk Tectonic Centre

ISSN 0536 – 1036. ИВУЗ. «Лесной журнал». 2015. № 1

V.V. Staritsyn, Researcher

V.V.Belyaev, Doctor of Agriculture, Professor Institute of Ecological Problems of the North, Ural Branch of the Russian Academy of Sciences, Naberezhnaya Severnoy Dviny, 23, Arkhangelsk, 163002, Russia; e-mail: corwin87@mail.ru

Currently is given much consideration to the integrated use of forest resources. Wild-growing berry plantations are one of the main components of the non-timber forest resources, the populations of which are affected both by well-known environmental factors and geo-ecological conditions, studied in the present article. This article explores the change of productivity and ascorbic acid content of wild-growing cowberries (Vaccinium vitis-idaea L.) and blueberries (Vaccinium myrtillus L.) in the territories of tectonic centres. The studying area is located in the north of the Kenozero National Park. During the two field seasons have been studied the productivity of berries with the use of conventional resource study methods. A selection of berries was picked for chemical analysis. The tests were carried out at the Institute of Natural Sciences and Biomedicine of the Northern Arctic Federal University named after M.V. Lomonosov, Arkhangelsk, Russia. The findings has shown that in the core of the tectonic centre the productivity of cowberries and blueberries is considerably lower than in the periphery. Similarly, the amount of berries has been changed. In the core of the tectonic centre cowberries was 9.32±1.44, blueberries – 22.32 ±3.61 pcs/m2; at the periphery 54.68 ± 8.49 and 76.48 ± 9.41 pcs/m2, respectively. So, the productivity per 1 m2 differs by 79% between the core and the periphery for cowberries, and by 66% for blueberries. This may be declared of the significant differences in the amount of precipitation, especially in dry years, and different content of microelements in the soil. Ascorbic acid content in berries was determined by the photometric method based on State Standard 24556-89. It has been found, that in the core of the tectonic centre the content of Vitamin С in cowberries is 70.86 ± 4.69 mg/100 g and in blueberries is 55.99 ± 2.00 mg/100 g, which is significantly higher than at the periphery: 43.70 ± 0.97 mg/100 g and 35.3 ± 5.13 mg/100 g. So, the content of Vitamin С differs in the center and the periphery by 59% in cowberries and by 62% in blueberries. The correlation between the content of Vitamin С and location on the territory of the tectonic centre can be preliminarily declared by the relationship between the chemical composition of the soil and vitamin accumulation in plants: the lack of nitrogen in the soil causes the decrease of ascorbic acid content in the plant. The enrichment of the same soil with potassium leads to its increase.

Keywords: Vaccinium mirtilus L., V. vitis-idaea L., productivity, ascorbic acid, tectonic centres.

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