Assessment of the reproductive capacity of Pinus sylvestris trees growing under conditions of chronic exposure to radionuclides of uranium and thorium series

Autor:	T. A. Maistrenko, Stanislav A. Geras’kin, Justin Brown, Evseeva Ti, Belykh Es
Rok vydání:	2011
Předmět:	Radionuclide education.field_of_study biology Population Scots pine food and beverages chemistry.chemical_element Thorium Uranium biology.organism_classification Tailings Radium Horticulture chemistry Botany Reproductive capacity education Ecology Evolution Behavior and Systematics
Zdroj:	Russian Journal of Ecology. 42:382-387
ISSN:	1608-3334 1067-4136
Popis:	The reproductive capacity of Scots pine (Pinus sylvestris L.) has been estimated in trees from the population growing in an area used to store tailings from uranium ore processing and radium production. Under such conditions, 12- to 15-year-old trees produce seeds of a quality inferior to that in areas with a normal background radiation level. As the weighted absorbed dose rate (at a weighting coefficient of 5) for generative organs increases from 0.002 ± 0.0003 to 0.344 ± 0.059 mGy/day, a proportional increase is observed in the proportion of empty seeds and the frequency of cytogenetic disturbances in the root meristem of seedlings, while the survival rate of seedlings decreases. The minimum absorbed dose rate leading to these changes in the pine population is 0.027 mGy/day, i.e., 12 times as high as the control value.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::30a9f2d71d1f32e19d841945fffb060c https://doi.org/10.1134/s1067413611050055 Zobrazit plný text záznamu Full text from SpringerLink