Изменчивость частоты апомиксиса и половой структуры в популяциях Antennaria dioica европейской части России
Aims. 13 populations of A. dioica, growing in Saratov, Penza, Ulyanovsk, Kirov Regions and the Republic of Chuvashia, Mari-El, Komi were studied to identify apomixis rate variability and sex structure along a gradient of geographical coordinates (51°30' NL, 45°30' EL – 60°00' NL, 49°3...
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| Veröffentlicht in: | Фактори експериментальної еволюції організмів |
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| Datum: | 2014 |
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Інститут молекулярної біології і генетики НАН України
2014
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| Zitieren: | Изменчивость частоты апомиксиса и половой структуры в популяциях Antennaria dioica европейской части России / А.С. Кашин, И.С. Кочанова, Н.М. Лисицкая, Е.В. Угольникова // Фактори експериментальної еволюції організмів: Зб. наук. пр. — 2014. — Т. 14. — С. 26-30. — Бібліогр.: 10 назв. — рос. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862578930219745280 |
|---|---|
| author | Кашин, А.С. Кочанова, И.С. Лисицкая, Н.М. Угольникова, Е.В. |
| author_facet | Кашин, А.С. Кочанова, И.С. Лисицкая, Н.М. Угольникова, Е.В. |
| citation_txt | Изменчивость частоты апомиксиса и половой структуры в популяциях Antennaria dioica европейской части России / А.С. Кашин, И.С. Кочанова, Н.М. Лисицкая, Е.В. Угольникова // Фактори експериментальної еволюції організмів: Зб. наук. пр. — 2014. — Т. 14. — С. 26-30. — Бібліогр.: 10 назв. — рос. |
| collection | DSpace DC |
| container_title | Фактори експериментальної еволюції організмів |
| description | Aims. 13 populations of A. dioica, growing in Saratov, Penza, Ulyanovsk, Kirov Regions and the Republic of Chuvashia, Mari-El, Komi were studied to identify apomixis rate variability and sex structure along a gradient of geographical coordinates (51°30' NL, 45°30' EL – 60°00' NL, 49°30' EL). Methods. Frequency of apomixis was diagnosed on the basis of comparative data on seed production of plants in the free pollination and flowering pollenless mode, as well as featured cytoembryologically. For cytoembryological analysis inflorescences were fixed 1–3 days before flowering in the latch Clark. The enlightening liquid Guerra (Herr, 1971) was used to enlighten ovules. Methodology of preparation of "enlightened" ovules was modified by us. Results. The frequency of apomixis and sex structure of populations of Antennaria dioica were studied in the European part of Russia on the gradient of latitude. It was shown that closer to the southern and northern boundaries of the range plants A. dioica behave as obligatory amfimictic, while in the central part of the area – as facultatively apomictic. It was revealed that under arid conditions in the southern regions a year after a drought flowering of A. dioica plants is completely suppressed, and in regions with the less arid climate the balance of flowering plants shifts towards "male" individuals. Relatively dry conditions of the previous before the flowering year led to the fact that in the following year the populations featured a relative balance of flowering for "male" and "female" individuals. Under the adverse conditions of drought "female" items get eliminated from the population first. Conclusions. A. dioica populations at the northern and southern boundaries of the range behave as amfimictic, while in the central part of the area – as facultatively apomictic. The ratio of flowering of "female" and "male" individuals in the populations of this species is essentially dependent on the latitude and weather conditions.

Key words: Antennaria dioica, gametophytic apomixis, dioecious, sex structure of populations.
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| first_indexed | 2025-11-26T18:06:57Z |
| format | Article |
| fulltext | |
| id | nasplib_isofts_kiev_ua-123456789-178032 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 2219-3782 |
| language | Russian |
| last_indexed | 2025-11-26T18:06:57Z |
| publishDate | 2014 |
| publisher | Інститут молекулярної біології і генетики НАН України |
| record_format | dspace |
| spelling | Кашин, А.С. Кочанова, И.С. Лисицкая, Н.М. Угольникова, Е.В. 2021-02-17T18:12:25Z 2021-02-17T18:12:25Z 2014 Изменчивость частоты апомиксиса и половой структуры в популяциях Antennaria dioica европейской части России / А.С. Кашин, И.С. Кочанова, Н.М. Лисицкая, Е.В. Угольникова // Фактори експериментальної еволюції організмів: Зб. наук. пр. — 2014. — Т. 14. — С. 26-30. — Бібліогр.: 10 назв. — рос. 2219-3782 https://nasplib.isofts.kiev.ua/handle/123456789/178032 581.141.031.3 + 581.145.032.3 + 581.163 Aims. 13 populations of A. dioica, growing in Saratov, Penza, Ulyanovsk, Kirov Regions and the Republic of Chuvashia, Mari-El, Komi were studied to identify apomixis rate variability and sex structure along a gradient of geographical coordinates (51°30' NL, 45°30' EL – 60°00' NL, 49°30' EL). Methods. Frequency of apomixis was diagnosed on the basis of comparative data on seed production of plants in the free pollination and flowering pollenless mode, as well as featured cytoembryologically. For cytoembryological analysis inflorescences were fixed 1–3 days before flowering in the latch Clark. The enlightening liquid Guerra (Herr, 1971) was used to enlighten ovules. Methodology of preparation of "enlightened" ovules was modified by us. Results. The frequency of apomixis and sex structure of populations of Antennaria dioica were studied in the European part of Russia on the gradient of latitude. It was shown that closer to the southern and northern boundaries of the range plants A. dioica behave as obligatory amfimictic, while in the central part of the area – as facultatively apomictic. It was revealed that under arid conditions in the southern regions a year after a drought flowering of A. dioica plants is completely suppressed, and in regions with the less arid climate the balance of flowering plants shifts towards "male" individuals. Relatively dry conditions of the previous before the flowering year led to the fact that in the following year the populations featured a relative balance of flowering for "male" and "female" individuals. Under the adverse conditions of drought "female" items get eliminated from the population first. Conclusions. A. dioica populations at the northern and southern boundaries of the range behave as amfimictic, while in the central part of the area – as facultatively apomictic. The ratio of flowering of "female" and "male" individuals in the populations of this species is essentially dependent on the latitude and weather conditions.
 
 Key words: Antennaria dioica, gametophytic apomixis, dioecious, sex structure of populations. ru Інститут молекулярної біології і генетики НАН України Фактори експериментальної еволюції організмів Еволюційна екологія та екогенетика Изменчивость частоты апомиксиса и половой структуры в популяциях Antennaria dioica европейской части России Apomixis rate variability and sex structures of population of Antennaria dioica of european Russia Article published earlier |
| spellingShingle | Изменчивость частоты апомиксиса и половой структуры в популяциях Antennaria dioica европейской части России Кашин, А.С. Кочанова, И.С. Лисицкая, Н.М. Угольникова, Е.В. Еволюційна екологія та екогенетика |
| title | Изменчивость частоты апомиксиса и половой структуры в популяциях Antennaria dioica европейской части России |
| title_alt | Apomixis rate variability and sex structures of population of Antennaria dioica of european Russia |
| title_full | Изменчивость частоты апомиксиса и половой структуры в популяциях Antennaria dioica европейской части России |
| title_fullStr | Изменчивость частоты апомиксиса и половой структуры в популяциях Antennaria dioica европейской части России |
| title_full_unstemmed | Изменчивость частоты апомиксиса и половой структуры в популяциях Antennaria dioica европейской части России |
| title_short | Изменчивость частоты апомиксиса и половой структуры в популяциях Antennaria dioica европейской части России |
| title_sort | изменчивость частоты апомиксиса и половой структуры в популяциях antennaria dioica европейской части россии |
| topic | Еволюційна екологія та екогенетика |
| topic_facet | Еволюційна екологія та екогенетика |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/178032 |
| work_keys_str_mv | AT kašinas izmenčivostʹčastotyapomiksisaipolovoistrukturyvpopulâciâhantennariadioicaevropeiskoičastirossii AT kočanovais izmenčivostʹčastotyapomiksisaipolovoistrukturyvpopulâciâhantennariadioicaevropeiskoičastirossii AT lisickaânm izmenčivostʹčastotyapomiksisaipolovoistrukturyvpopulâciâhantennariadioicaevropeiskoičastirossii AT ugolʹnikovaev izmenčivostʹčastotyapomiksisaipolovoistrukturyvpopulâciâhantennariadioicaevropeiskoičastirossii AT kašinas apomixisratevariabilityandsexstructuresofpopulationofantennariadioicaofeuropeanrussia AT kočanovais apomixisratevariabilityandsexstructuresofpopulationofantennariadioicaofeuropeanrussia AT lisickaânm apomixisratevariabilityandsexstructuresofpopulationofantennariadioicaofeuropeanrussia AT ugolʹnikovaev apomixisratevariabilityandsexstructuresofpopulationofantennariadioicaofeuropeanrussia |