: материалы временных коллективов / E. V. Bazhina, O. V. Kvitko, E. N. Muratova // Eurasian Journal of Forest Research. - 2008. - Vol. 11-1. - С. 41-49. - Библиогр. в конце ст.
Аннотация: Meiosis in Siberian fir is characterized by asynchrony (prophase I and tetrads in the same microsporangium simultaneously). Up to 4 nucleoli (in naturals stands) and 5 (in an arboretum) are observed at prophase I. The shortest meiotic stages are telophase I and 2. Each of them is observed in 0.2% (in an arboretum) and 0.05% (in natural stands) of cells. In natural stands meiosis elapses quickly (within 2 days). In an arboretum it can continue for more than two weeks. Mainly meiosis is regular. Meiotic irregilarities are, though, also encountered at different stages (fragments, bridges, etc.). In trees growing in an arboretum the total number of irregular cells can reach 17.9%. In natural populations only 11.7-13.3% of cells are irregular. The spectrum of meiotic irregularities in an arboretum is wider than in natural stands.
Держатели документа:
Институт леса им. В.Н. Сукачева Сибирского отделения Российской академии наук : 660036, Красноярск, Академгородок, 50, стр., 28
Доп.точки доступа:
Kvitko, Ol'ga Viktorovna; Квитко, Ольга Викторовна; Muratova, Elena Nikolayevna; Бажина, Елена Васильевна
Труды сотрудников ИЛ им. В.Н. Сукачева СО РАН
w10=
Найдено документов в текущей БД: 4
Meiosis at microsporogenesis in Siberian fir (Abies sibirica Ledeb.) in natural populations and in an arboretum
Specific features of meiosis in the Siberian Fir (Abies sibirica) in the forest Arboretum of the V. N. Sukachev Institute, Russia
/ E. V. Bazhina, O. V. Kvitko, E. N. Muratova // Biodiversity and Conservation. - 2011. - Vol. 20, Is. 2. - P415-428, DOI 10.1007/s10531-010-9958-y
. - ISSN 0960-3115
Кл.слова (ненормированные):
Ex situ conservation -- Horticulture -- Meiotic irregularities -- Pollen sterility -- climate change -- climate effect -- coniferous tree -- environmental factor -- horticulture -- palynology -- plantation forestry -- reproductive biology -- species conservation -- sterility -- Russian Federation -- Abies -- Abies sibirica -- Coniferophyta
Аннотация: Investigating the tolerance of plant reproductive systems to environmental changes has become a research priority under current climate change scenarios. Successful plant conservation requires knowledge of plant reproductive biology, particularly the meiotic characteristics of planted species. Meiosis, as part of microsporogenesis, is a critical plant developmental stage controlling future pollen quality. Meiosis in a Siberian fir (Abies sibirica) plantation, established in the Forest Arboretum of the Sukachev Institute, Russia, was studied from 2002 to 2004. The microsporogenesis pattern found for the Siberian fir appeared to be largely similar to that exhibited by other conifer species. Meiosis in the Siberian fir has the following characteristics: asynchrony, rapid progression of telophases I and II, and parallel and linear spindle arrangements at different meiosis II stages. General and specific meiosis irregularities were recorded at each stage. Some specific features of meiosis and the specific development of some irregularities were revealed. Pollen development analysis showed that irregular pollen grains made up less than 1% of all grains. The specific features of meiosis identified in fir trees growing in the Arboretum indicated low resistance of male reproductive structures to climatic changes and might account for high fir pollen sterility in this new environment. В© 2010 Springer Science+Business Media B.V.
Scopus,
WOS,
Полный текст
Держатели документа:
V. N. Sukachev Institute of Forest, Academgorodok, 50-28, Krasnoyarsk 660036, Russian Federation
Доп.точки доступа:
Bazhina, E.V.; Kvitko, O.V.; Muratova, E.N.
Кл.слова (ненормированные):
Ex situ conservation -- Horticulture -- Meiotic irregularities -- Pollen sterility -- climate change -- climate effect -- coniferous tree -- environmental factor -- horticulture -- palynology -- plantation forestry -- reproductive biology -- species conservation -- sterility -- Russian Federation -- Abies -- Abies sibirica -- Coniferophyta
Аннотация: Investigating the tolerance of plant reproductive systems to environmental changes has become a research priority under current climate change scenarios. Successful plant conservation requires knowledge of plant reproductive biology, particularly the meiotic characteristics of planted species. Meiosis, as part of microsporogenesis, is a critical plant developmental stage controlling future pollen quality. Meiosis in a Siberian fir (Abies sibirica) plantation, established in the Forest Arboretum of the Sukachev Institute, Russia, was studied from 2002 to 2004. The microsporogenesis pattern found for the Siberian fir appeared to be largely similar to that exhibited by other conifer species. Meiosis in the Siberian fir has the following characteristics: asynchrony, rapid progression of telophases I and II, and parallel and linear spindle arrangements at different meiosis II stages. General and specific meiosis irregularities were recorded at each stage. Some specific features of meiosis and the specific development of some irregularities were revealed. Pollen development analysis showed that irregular pollen grains made up less than 1% of all grains. The specific features of meiosis identified in fir trees growing in the Arboretum indicated low resistance of male reproductive structures to climatic changes and might account for high fir pollen sterility in this new environment. В© 2010 Springer Science+Business Media B.V.
Scopus,
WOS,
Полный текст
Держатели документа:
V. N. Sukachev Institute of Forest, Academgorodok, 50-28, Krasnoyarsk 660036, Russian Federation
Доп.точки доступа:
Bazhina, E.V.; Kvitko, O.V.; Muratova, E.N.
Specific features of microsporogenesis in the Siberian larch growing under the conditions of technogenic load
/ L. I. Romanova, I. N. Tret'yakova // Ontogenez. - 2005. - Vol. 36, Is. 2. - С. 128-134
. - ISSN 0475-1450
Кл.слова (ненормированные):
Aberrations -- Asynchrony -- Meiosis -- Microsporocytes -- Technogenic pollution -- Tetrads -- air pollutant -- article -- Larix -- meiotic prophase I -- physiology -- pollen -- season -- ultrastructure -- Air Pollutants -- Larix -- Meiotic Prophase I -- Pollen -- Seasons
Аннотация: Studies of microsporogenesis in the Siberian larch growing in Krasnoyarsk and its suburbs have shown that meiosis starts in October. Microsporocytes winter at prophase I (leptoneme, diploneme). Reduction divisions in male generative buds are resumed and terminated in spring, in March. However, in the case of thaws during the autumn-winter period, meiotic division proceeds in the larch buds and this leads to the formation of degrading tetrads and pollen. Hence, the organic quiescence is absent in the larch in winter. It was shown that in the larch growing in the city, meiosis proceed more asynchronously than in the background tree stands. An increase of chromosomal aberrations during the reduction division was noted under the conditions of technogenic pollution.
Scopus,
Полный текст,
Scopus
Держатели документа:
Siberian State Technological University, pr. Mira 82, Krasnoyarsk, 660049, Russian Federation
Sukachev Institute of Forest, Siberian Branch of the Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Доп.точки доступа:
Romanova, L.I.; Tret'yakova, I.N.
Кл.слова (ненормированные):
Aberrations -- Asynchrony -- Meiosis -- Microsporocytes -- Technogenic pollution -- Tetrads -- air pollutant -- article -- Larix -- meiotic prophase I -- physiology -- pollen -- season -- ultrastructure -- Air Pollutants -- Larix -- Meiotic Prophase I -- Pollen -- Seasons
Аннотация: Studies of microsporogenesis in the Siberian larch growing in Krasnoyarsk and its suburbs have shown that meiosis starts in October. Microsporocytes winter at prophase I (leptoneme, diploneme). Reduction divisions in male generative buds are resumed and terminated in spring, in March. However, in the case of thaws during the autumn-winter period, meiotic division proceeds in the larch buds and this leads to the formation of degrading tetrads and pollen. Hence, the organic quiescence is absent in the larch in winter. It was shown that in the larch growing in the city, meiosis proceed more asynchronously than in the background tree stands. An increase of chromosomal aberrations during the reduction division was noted under the conditions of technogenic pollution.
Scopus,
Полный текст,
Scopus
Держатели документа:
Siberian State Technological University, pr. Mira 82, Krasnoyarsk, 660049, Russian Federation
Sukachev Institute of Forest, Siberian Branch of the Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Доп.точки доступа:
Romanova, L.I.; Tret'yakova, I.N.
Peculiarities of meiosis at microsporogenesis in picea obovata (Pinaceae) under introduction
/ E. V. Bazhina, M. I. Sedaeva, E. N. Muratova, E. A. Bazhina // Botanicheskii Zhu. - 2020. - Vol. 105, Is. 12. - С. 1207-1220, DOI 10.31857/S000681362012011X
. - ISSN 0006-8136
Кл.слова (ненормированные):
Chromosomes -- Introduction -- Meiosis -- Meiotic irregularities -- Microsporogenesis -- Picea obovata Ledeb
Аннотация: Investigating the tolerance of plant reproductive systems to environmental changes has become a research pri-ority under current climate change scenarios. The results of the investigations of meiosis at microsporogenesis in Siberian spruce (Picea obovata Ledeb.) under introduction are presented. The meiosis in the Siberian spruce plantation established in the Forest Arboretum of the Sukachev Institute, Russia, was studied in 2018. The microsporogenesis pattern found for the Siberian spruce appeared to be largely similar to that exhibited by other conifer species. The meiosis in the Siberian spruce has the following characteristics: identification of all stages of prophases I; asynchrony in different trees as well as in different meiocytes of the same tree and the same microsporangium; parallel and perpendicular as well as linear spindle arrangements at different meiosis II; irregularities of development at different stages. Some specific meiosis irregularities have never been revealed in natural populations of Central Siberia. The investigations of plant ontogenesis in new conditions of growth show the response of the plants on climate change. The specific features of meiosis identified in the spruce trees growing ex situ indicated high resistance of male reproductive structures to climatic changes. © 2020, Komarov Botanical Institute. All rights reserved.
Scopus
Держатели документа:
V.N. Sukachev Institute of Forest, Federal Research Center “Krasnoyarsk Science Center SB RAS”, Akademgorodok, 50/28, Krasnoyarsk, 660036, Russian Federation
Moscow City University, Vtoroy Selskohoziajstvenny proezd, 4, Moscow, 129226, Russian Federation
Доп.точки доступа:
Bazhina, E. V.; Sedaeva, M. I.; Muratova, E. N.; Bazhina, E. A.
Кл.слова (ненормированные):
Chromosomes -- Introduction -- Meiosis -- Meiotic irregularities -- Microsporogenesis -- Picea obovata Ledeb
Аннотация: Investigating the tolerance of plant reproductive systems to environmental changes has become a research pri-ority under current climate change scenarios. The results of the investigations of meiosis at microsporogenesis in Siberian spruce (Picea obovata Ledeb.) under introduction are presented. The meiosis in the Siberian spruce plantation established in the Forest Arboretum of the Sukachev Institute, Russia, was studied in 2018. The microsporogenesis pattern found for the Siberian spruce appeared to be largely similar to that exhibited by other conifer species. The meiosis in the Siberian spruce has the following characteristics: identification of all stages of prophases I; asynchrony in different trees as well as in different meiocytes of the same tree and the same microsporangium; parallel and perpendicular as well as linear spindle arrangements at different meiosis II; irregularities of development at different stages. Some specific meiosis irregularities have never been revealed in natural populations of Central Siberia. The investigations of plant ontogenesis in new conditions of growth show the response of the plants on climate change. The specific features of meiosis identified in the spruce trees growing ex situ indicated high resistance of male reproductive structures to climatic changes. © 2020, Komarov Botanical Institute. All rights reserved.
Scopus
Держатели документа:
V.N. Sukachev Institute of Forest, Federal Research Center “Krasnoyarsk Science Center SB RAS”, Akademgorodok, 50/28, Krasnoyarsk, 660036, Russian Federation
Moscow City University, Vtoroy Selskohoziajstvenny proezd, 4, Moscow, 129226, Russian Federation
Доп.точки доступа:
Bazhina, E. V.; Sedaeva, M. I.; Muratova, E. N.; Bazhina, E. A.