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Seed germination of endemic species from Kerguelen phytogeographic zone

Hennion, F.; Walton, D.W.H.. 1997 Seed germination of endemic species from Kerguelen phytogeographic zone. Polar Biology, 17 (2). 180-187. 10.1007/s003000050120

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Abstract/Summary

Seeds of six endemic species and two circumpolar species were collected from several sites on Kerguelen and tested for germination between 5 and 25°C on thermogradient bars. Pringlea antiscorbutica and Colobanthus kerguelensis had a near 100% viability with an initial germination temperature of ca. 24°C. Colobanthus attained nearly 100% viability from 5 to 25°C whereas Pringlea germination declined markedly below 20°C. In Poa kerguelensis and P. cookii germination was poor and varied between sites. The three Ranunculus spp. showed various degrees of dormancy. In Lyallia kerguelensis, although the seed appeared mature, a variety of treatments could only partly release an apparently deep dormancy. These data are discussed with respect to field observations on reproduction from seed.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1007/s003000050120
Programmes: BAS Programmes > Pre 2000 programme
ISSN: 0722-4060
Date made live: 14 Sep 2016 08:01 +0 (UTC)
URI: http://nora.nerc.ac.uk/id/eprint/514484

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