Maritime Pine (Pinus pinaster Sol.)
| Autor: | M. Rancillac |
|---|---|
| Přispěvatelé: | ProdInra, Migration, Station de physiopathologie végétale, Institut National de la Recherche Agronomique (INRA) |
| Rok vydání: | 1991 |
| Předmět: | |
| Zdroj: | Biotechnology in Agriculture and Forestry ISBN: 9783642080937 Biotechnology in Agriculture and Forestry Biotechnology in Agriculture and Forestry, 1991, 16, pp.317-338 |
| ISSN: | 0934-943X |
| DOI: | 10.1007/978-3-662-13231-9_20 |
| Popis: | The genus Pinus is the most important among the Conifers, with about 80 species, one of which is the maritime pine, Pinus pinaster Sol. (2n = 24). It is a resinous tree with persistent and very long needles two or three of which are grouped into fascicles with a basal sheath. Huge female cones, 12–15 cm high, consist of many fertile scales, each bearing two winged seeds, which are spread by the wind in the third year after pollination. They have a fleshy endosperm surrounding the 6–7-mm-long embryo, which includes five to nine cotyledons. After outside soil germination, tree growth occurs by one or two annual sap flushes that set successive growths of branches around the trunk. Adult, 20–35-m-tall trees (Fig. 1) have a thick cracked bark, dark purple outside, dark red inside. They grow in noncalcareous soils. |
| Databáze: | OpenAIRE |
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