タグ「Pine trees」
Author: Oficerov M.V., Igonina E.V.
Reference: Gazette “ ГЕНЕТИКА” (genetics), 2009
ISSN: 1022-7954
DOI: 10.1134/S1022795409020082
Keywords: Scots pine, contamination, genetics
Abstract: The genetic consequences of irradiation were studied in a Scots pine population from a region contaminated as a result of the Chernobyl meltdown. Mutations of isozyme loci were not detected in seeds collected from trees of the first post-meltdown generation in 2004. The frequency of cells with chromosome aberrations in the root meristem of seedlings grown from the seeds did not differ from the control level. A deviation from the expected ratio 1:1 was observed for some isozyme alleles in endosperms of seeds obtained from heterozygous trees.
URL: http://www.ncbi.nlm.nih.gov/pubmed/19334615
Author: Perevodsky A.N., Perevodskaya T.V.
Reference: Gazette “РАДИАЦИОННАЯ БИОЛОГИЯ. РАДИОЭКОЛОГИЯ “ (Radiation Biology, Radioecology), 2012
ISSN: 0869-8031
DOI: 10.1134/S0869803112030137
Keywords: forest contamination, 137cs, monitoring, phytomass of pine, various stages of contamination
Abstract: Based on years of research of 137Cs accumulating on above-ground phytomass of pine plantations. Predictive calculations of surface contamination elements of phytomass of pine plantations, after fallout of radioactivities. Optimization of radiation monitoring in forests at different stages after an emergency contamination. Defines three stages in the formation of radio-ecological situation in the woods. Gives proposals for optimization of sampling for radioecological monitoring of forest ecosystems at various stages after radiation accident.
URL: http://elibrary.ru/item.asp?id=17745990
Author: Bulavik, I.M.
Reference: Gazette “МЕДИКО-БИОЛОГИЧЕСКИЕ ПРОБЛЕМЫ ЖИЗНЕДЕЯТЕЛЬНОСТИ” (medico-biologic problems of vital activities), Gomel, 2011
ISSN: 2074-2088
Keywords: 137CS, PINE STANDS, WOOD, POTASSIUM FERTILIZERS, SPECIFIC ACTIVITY
Abstract: Introduces investigations on the influence of potassium fertilizers on the accumulation level of 137cs in the wood of Scots pine (Pinus sylvestris L.). Proofs of absence of significant radiological effect in maturing and mature pine fertilized with potassium.
URL: http://elibrary.ru/item.asp?id=16519243
Author: Perevolotsky A.N., Bulavik I.M., Perevolotskaya T.V., Paskrobko L.A., Andrush S.N.
Reference: Gazette “РАДИАЦИОННАЯ БИОЛОГИЯ. РАДИОЭКОЛОГИЯ “ (Radiation Biology, Radioecology), 2007
DOI: 10.1134/S0869803107040091
ISSN: 0869-8031
Keywords: 137cs, 90sr, pine plantation, radionuclides, soil
Abstract: Investigation of the distribution of 137Cs and 90Sr in pine plantations in different edaphic conditions. Confirms that the stock of radionuclides in the forest litter depends on the range of the contamination and varies from 10 to 70% for 137Cs and 20 to 60% for 90Sr. With increasing moisture in soil, in each gradation of trophic network, increases R 137Cs in wood and reduces 90Sr. The stock of 137Cs and 90Sr in the wood of pine plantations in various edaphotopes depends on state of plantation and the levels of accumulation of radionuclides.
URL: http://elibrary.ru/item.asp?id=9534734
Title: Histological changes in Pinus sylvestris L. in the proximal-zone around the Chernobyl power plant
Author: Lavrans Skuterud, Natalia I. Goltsova, Roger Næumann, Torbjørn Sikkeland, Tore Lindmo
Reference: Science of The Total Environment, Volume 157, 11 December 1994, Pages 387-397
DOI:http://dx.doi.org/10.1016/0048-9697(94)90602-5
Keywords: Histology; Pine trees; Radiation doses; Effects; Radioactivity; Chernobyl
Abstract: In September 1990, samples of wood and bark were collected from Pinus sylvestris L. at three locations exposed to different levels of radioactive fallout from the 1986 accident at the Chernobyl nuclear power plant (NPP). Cross-sections of wood from the most exposed location showed a distinct change in histology in the annual ring of 1986, a consequence of the accident on 26 April. The width of annual rings decreased after the accident, and the relative width of latewood in annual rings increased transiently in 1986 and subsequently decreased in 1987. In 1987, an increase in the number of vertical resin ducts was observed, related to contamination at the location, and the number of radial rays decreased at the two locations of higher contamination. The radionuclide content in the bark was found to correlate with the degree of damage in the wood. There are several hypotheses about the contribution from various types
of radioactive contamination, but the results indicate that both ‘cloud γ’ and deposited radioactivity (β and γ) were of importance. The present work suggests that detailed studies of dose-effect relationships after exposure to different dose rates and radiation qualities may establish the usefulness of pine trees as in situ, time-recording differential dosimeters of ionizing radiation.
URL: http://www.sciencedirect.com/science/article/pii/0048969794906025
