Characteristics of cones and seeds of Pinus sibirica Du Tour at tree line in the Central Altai
We studied the cones of Siberian stone pine (Pinus sibirica Du Tour) at its treeline in the forest tundra ecotone in the Severo-Chuisky Range, the Altai Mountains, Russia. We have registered length, diameter and form of apophysis, the number of sterile and fertile scales in the cones, the number of...
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| Format: | Article |
| Language: | English |
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Russian Academy of Sciences, Siberian Branch Publishing House
2016-02-01
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| Series: | Сибирский лесной журнал |
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| Online Access: | http://xn--80abmehbaibgnewcmzjeef0c.xn--p1ai/upload/iblock/634/6340f493b1e5b86efac9a01d8ec3918f.pdf |
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| author | E. O. Filimonova E. E. Timoshok |
| author_facet | E. O. Filimonova E. E. Timoshok |
| author_sort | E. O. Filimonova |
| collection | DOAJ |
| description | We studied the cones of Siberian stone pine (Pinus sibirica Du Tour) at its treeline in the forest tundra ecotone in the Severo-Chuisky Range, the Altai Mountains, Russia. We have registered length, diameter and form of apophysis, the number of sterile and fertile scales in the cones, the number of ovules and the number of seeds, including developed and underdeveloped seeds, and the developed seeds/ovules ratio. The cones and seeds are produced below 2350 m a. s. l under arid conditions (east-south-eastern slope) and below 2390 m a. s. l. under more humid conditions (west-north-western slope). These altitudes are reproductive line of Siberian stone pine. The predominant forms of the cones near this line are cone-like, spherical and cylindrical. Apophyses are mostly tuberous, hook-like and flat. The most (50%) of the sampled cones have the cylindrical form. The number of ovules varied from 84.6 to 102.4 per cone, the number of seeds were from 76.7 to 98.9 per cone, and the developed seeds were 74.5 to 95.7 per cone. The lowest proportion of developed seeds was registered for cones sampled on arid east-south-eastern slope in 2011. The cones with tuberous apophysis have the highest number of seeds (up to 103.6–110 per cone under more humid and 87.3–104.4 per cone under more arid conditions). Cones gathered at 2235–2390 m a. s. l. have low presence of underdeveloped seeds (1.0 to 3.2 %) and high developed seeds/ovules ratio (87.2 to 93.7 %). |
| first_indexed | 2024-12-20T23:57:06Z |
| format | Article |
| id | doaj.art-91dec7ce26e24d5c80c7dab5888d3a61 |
| institution | Directory Open Access Journal |
| issn | 2311-1410 2312-2099 |
| language | English |
| last_indexed | 2024-12-20T23:57:06Z |
| publishDate | 2016-02-01 |
| publisher | Russian Academy of Sciences, Siberian Branch Publishing House |
| record_format | Article |
| series | Сибирский лесной журнал |
| spelling | doaj.art-91dec7ce26e24d5c80c7dab5888d3a612022-12-21T19:22:43ZengRussian Academy of Sciences, Siberian Branch Publishing HouseСибирский лесной журнал2311-14102312-20992016-02-0131465410.15372/SJFS20160105Characteristics of cones and seeds of Pinus sibirica Du Tour at tree line in the Central AltaiE. O. Filimonova0E. E. Timoshok1Institute for Monitoring of Climatic and Ecological Systems, Russian Academy of Sciences, Siberian BranchInstitute for Monitoring of Climatic and Ecological Systems, Russian Academy of Sciences, Siberian BranchWe studied the cones of Siberian stone pine (Pinus sibirica Du Tour) at its treeline in the forest tundra ecotone in the Severo-Chuisky Range, the Altai Mountains, Russia. We have registered length, diameter and form of apophysis, the number of sterile and fertile scales in the cones, the number of ovules and the number of seeds, including developed and underdeveloped seeds, and the developed seeds/ovules ratio. The cones and seeds are produced below 2350 m a. s. l under arid conditions (east-south-eastern slope) and below 2390 m a. s. l. under more humid conditions (west-north-western slope). These altitudes are reproductive line of Siberian stone pine. The predominant forms of the cones near this line are cone-like, spherical and cylindrical. Apophyses are mostly tuberous, hook-like and flat. The most (50%) of the sampled cones have the cylindrical form. The number of ovules varied from 84.6 to 102.4 per cone, the number of seeds were from 76.7 to 98.9 per cone, and the developed seeds were 74.5 to 95.7 per cone. The lowest proportion of developed seeds was registered for cones sampled on arid east-south-eastern slope in 2011. The cones with tuberous apophysis have the highest number of seeds (up to 103.6–110 per cone under more humid and 87.3–104.4 per cone under more arid conditions). Cones gathered at 2235–2390 m a. s. l. have low presence of underdeveloped seeds (1.0 to 3.2 %) and high developed seeds/ovules ratio (87.2 to 93.7 %).http://xn--80abmehbaibgnewcmzjeef0c.xn--p1ai/upload/iblock/634/6340f493b1e5b86efac9a01d8ec3918f.pdfSiberian stone pineconesseedsSevero-Chuisky rangeAltai |
| spellingShingle | E. O. Filimonova E. E. Timoshok Characteristics of cones and seeds of Pinus sibirica Du Tour at tree line in the Central Altai Сибирский лесной журнал Siberian stone pine cones seeds Severo-Chuisky range Altai |
| title | Characteristics of cones and seeds of Pinus sibirica Du Tour at tree line in the Central Altai |
| title_full | Characteristics of cones and seeds of Pinus sibirica Du Tour at tree line in the Central Altai |
| title_fullStr | Characteristics of cones and seeds of Pinus sibirica Du Tour at tree line in the Central Altai |
| title_full_unstemmed | Characteristics of cones and seeds of Pinus sibirica Du Tour at tree line in the Central Altai |
| title_short | Characteristics of cones and seeds of Pinus sibirica Du Tour at tree line in the Central Altai |
| title_sort | characteristics of cones and seeds of pinus sibirica du tour at tree line in the central altai |
| topic | Siberian stone pine cones seeds Severo-Chuisky range Altai |
| url | http://xn--80abmehbaibgnewcmzjeef0c.xn--p1ai/upload/iblock/634/6340f493b1e5b86efac9a01d8ec3918f.pdf |
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