Constraints to symbiotic germination of terrestrial orchid seed in a mediterranean bushland

•  The dependence of seeds of terrestrial orchids on specific fungi for germination provides a means of locating these fungi in the wild and to investigate the role of appropriate fungi in the germination of orchid seed and development of seedlings under natural field conditions. •  Seed baits, comp...

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Veröffentlicht in:The New phytologist. - 1979. - 152(2001), 3 vom: 18. Dez., Seite 511-520
1. Verfasser: Batty, A L (VerfasserIn)
Weitere Verfasser: Dixon, K W, Brundrett, M, Sivasithamparam, K
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2001
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article Caladenia arenicola conservation mycorrhiza orchid distribution rare plants south-western Australia symbiotic seed germination terrestrial orchid
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520 |a •  The dependence of seeds of terrestrial orchids on specific fungi for germination provides a means of locating these fungi in the wild and to investigate the role of appropriate fungi in the germination of orchid seed and development of seedlings under natural field conditions. •  Seed baits, comprising orchid (Caladenia arenicola) seed enclosed in fine nylon mesh, were placed at sample points along four transects through two orchid populations in bushland in Western Australia. Seed germination was scored and compared with adult orchid plant distribution and soil factors. •  A small fraction of available seed (< 1%) germinated to a stage of tuber formation where survival over the subsequent dry season would have been possible. Germination increased in the vicinity of adult C. arenicola plants, but other factors, such as soil potassium levels and presence of leaf litter, were also correlated with seed germination. •  The measurement of the spatial variability in germination events within an orchid habitat demonstrated the availability of new recruitment sites. This information is required to assess the natural recruitment capacity and the potential for orchid reintroduction in natural habitats 
650 4 |a Journal Article 
650 4 |a Caladenia arenicola 
650 4 |a conservation 
650 4 |a mycorrhiza 
650 4 |a orchid distribution 
650 4 |a rare plants 
650 4 |a south-western Australia 
650 4 |a symbiotic seed germination 
650 4 |a terrestrial orchid 
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700 1 |a Brundrett, M  |e verfasserin  |4 aut 
700 1 |a Sivasithamparam, K  |e verfasserin  |4 aut 
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