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Orenburg State University january 20, 2022   RU/EN
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Nemtseva N.V., Gorbunova O.S., Bogoutdinov D.Z., Savin E.Z., Malenkova O.V.
TO THE QUESTION OF WITHERING OF BLACKCURRANT [№ 5 ' 2016]
In certain regions of the Russian Federation and abroad mass withering of blackcurrant is observed in the last decade (Ribes nigrum L.). The area of distribution and injuriousness of a disease includes the Voronezh, Orenburg, Rostov regions, the Lower Volga and Central Volga area, regions of East Ukraine (The Kharkiv, Donetsk regions) and Northwest Kazakhstan. There is evidence that the death of R. nigrum may be caused by fungi of the genus Verticillium and Fusarium and Alternaria. In this regard, in recent years is the study of the mycological component of this culture. The aim of this work was the comparative characterization of complexes of microscopic fungi that live on trunks, roots, leaves of black currant. The results of studies in damaged plants revealed the presence of three genera of fungi — Fusarium, Alternaria, Verticillium. In addition, in some cases, discovered nematodes and spider mites, whose role is not installed. Comparing the received data with the temperature regime of the territory of the Orenburg region showed the greatest peak of microscopic fungi pathogenicity for R. nigrum in the period July — August. It is expected that wilt currant bushes initiated phytoplasma infection and subsequent contamination of fungi.The received results allow to specify the stages of the research and determine the methods of prevention and therapy of wilt blackcurrant.

Safonov M.A., Cherdintsev A.A., Malenkova A.S.
WOOD-DESTROYING BASIDIOMYCETOUS FUNGI OF THE SURROUNDINGS OF KUMERTAU (BASHKORTOSTAN) [№ 10 ' 2015]
The problems of reforestation and afforestation are important for many regions of Russia, especially with developed agriculture. Thus on the foreground the problem of creating sustainable spaces that moth would for a long time to perform its functions. The problem of artificial plantations is of particular importance in regions with relatively low forest cover, including in the South Ural. One of the conditions for the stable existence of artificial forest ecosystems — the study of the contribution of all components in their formation. In this respect, one of the most important components of forest ecosystems are wood-destroying basidiomycetous fungi. The article discusses the results of a study of wood-destroying basidiomycetous fungi conducted in Year 2012–2015 in artificial plantations in the vicinity of Kumertau (Bashkortostan) at the dumps of Kumertau lignite mine and plantings on Uralskaya mountain. The result of research is check-list including 101 species of fungi belonging to 58 genera. The greatest number of species were found at the pine timber. Mainly observed species of fungi live on dead wood and only 4 species — on growing trees. Complexes of species in plantations on industrial dumps differ significantly from the other complexes in species richness and composition. The article provides an annotated list of species that are new to this region of Bashkortostan and the Orenburg region, the places of their findings and characteristics of the substrate are given.

Safonov M.A., Malenkova A.S., Shamraev A.V., Bulgakov E.A.
DISTRIBUTION AND ECOLOGY OF PHYTOPATHOGENIC WOOD-DESTROYING BASIDIOMYCETES OF THE SOUTHERN PREURALS [№ 9 ' 2014]
Southern Preurals features a low percentage of forest that defines a focus on forests in the region. One of the factors that determine the dynamics of forest stands are phytopathogenic basidial fungi. The article presents data on the species composition and the spatial distribution of phytopathogenic basidiomycetes at the Southern Preurals. Discusses the variation in the degree of contamination of forest stands by phytopathogenic species depending on forest type and in the latitudinal gradient. The decline in the share of plant pathogenic species in the latitudinal gradient in the transition of the forest-steppe by steppe zone is marked, which testifies to the increasing of time of conservation of elements in wood.

Safonov M.A., Malenkova A.S., Shamraev A.V., Baykarova A.A.
COMPREHENSIVE ASSESSMENT OF ARTIFICIAL PINE TREE STANDS IN THE ORENBURG PREURALS [№ 10 ' 2013]
The results of the comprehensive assessment of artificial pine tree stands in the South Ural steppe zone (Novosergievskyi district of the Orenburg region) with the use of geobotanical indices, the vitality of forest stands, the structure of wood-destroying fungi biota are given. Noted that high richness of fungi species is characteristic for plantations with high vitality. Discussed prospects of integrated assessment of forest stands with the use of these indicators, and made recommendations for conservation of the most valuable plantations.

Safonov M.A., Malenkova A.S.
WOOD-DESTROYING FUNGI IN ARTIFICIAL CONIFER PLANTATIONS AT THE SOUTHERN PREURALS [№ 12 ' 2011]
In paper the results of the investigations of wood-destroying macromycetes habiting conifer plantations at the territory of the Southern Preurals is given. It is marked that species richness and composition of mycobiota depends on age and measurement of planted area. Plantations are biotopes for specific fungi species, not marked in natural forests and in that cause they can be taken as perspective objects for regional fungi diversion conservation.


Editor-in-chief
Sergey Aleksandrovich
MIROSHNIKOV

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© Электронное периодическое издание: ВЕСТНИК ОГУ on-line (VESTNIK OSU on-line), ISSN on-line 1814-6465
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Учредитель: Оренбургский государственный университет (ОГУ)
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