Biotic Interactions (GloBI) · NCBI – National Center for Biotechnology Information. Alsophila firma. Open Interactive Map. Alsophila firma image. Click to Display. Brief summary. No one has contributed a brief summary to this page yet. Explore what EOL knows about Alsophila firma. Add a brief summary to this page. Alsophila firma (Baker) D.S. Conant is an accepted name. This name is the accepted name of a species in the genus Alsophila (family Cyatheaceae). The record.
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However, this would depend on the spatial extent at which clonal growth occurs and the frequency of clone intermingling Charpentier, However, the breeding mechanisms e. The first site Huatusco, Veracruz: Map showing geographical location of the two populations in Mexico open circles and the distribution of cloud forest patches grey.
Leaf phenology and trunk growth of the deciduous tree fern Alsophila firma Baker D. This file is made available under the Creative Commons CC0 1. In addition, spores of A. The classification of the Cyatheaceae. Changes in the distribution of cloud forests during the last glacial predict the patterns of genetic diversity and demographic history of the tree fern Alsophila firma Cyatheaceae.
Although factors affecting SGS are well understood, most studies have almost exclusively focused on seed plants, especially angiosperms. Using the allele data for each individual i. In this context, we are aware that the analysis of SGS without reference to demographic information might fail to observe significant patterns of structuring Soltis et al.
Furthermore, study of the spatial genetics and demography of the two life stages of ferns would be highly valuable in increasing our understanding of the causes of SGS in these plants. Sample sites were located in two cloud forest patches in central—eastern Mexico.
Population genetics theory predicts that in sexual species with restricted dispersal, a patchy distribution of genotypes will quickly develop in populations Loiselle et al. Clonal propagation had a significant effect on SGS, effectively increasing the levels of structuring in both populations at short distances.
Specific primers were designed to amplify an intron of this copy of gapCp Supporting Information Table S1. The extant scaly tree ferns are commonly found in the tropics, from the wet lowlands to mid elevations. Accordingly, estimates of SGS in populations of A.
Alsophila firma ·
Genetic structure and phylogeography of a relict tree fern, Sphaeropteris brunoniana Cyatheaceae from China and Laos inferred from cpDNA sequence variations: Spatial structure and genetic diversity of two tropical tree species with contrasting breeding systems and different ploidy levels.
One interesting possibility stems from the bisexual condition of gametophytes observed in species of Alsophila R. The localized dispersal of propagules has been considered one of the main processes generating SGS Heywood, ; Loiselle et al.
In fern species with apogamy, such as C. We assume that SGS would arise by limited spore dispersal and frequent clonal growth occurring within short distances, which would also translate into a significant spatial clustering of stems. This study firmx Cnemidaria and Trichipteris which nested within Cyatheaand Nephelea now nested within Alsophila.
However, little is known about SGS in ferns, which together with lycopods alsophilw unique among land plants in having two free-living life stages. It is estimated there are ca. Sp meanmean Sp statistic across populations.
Many fern species have developed pre-zygotic mechanisms to promote outcrossing e. The arborescent rhizome of Cyathea medullaris.
Alsophila firma (Baker) D.S.Conant
For plants with mixed sexual and asexual reproduction, incorporating both aspects alsopnila reproduction is essential to make a correct inference about patterns of gene dispersal and inbreeding within populations Dutetch et al.
SGS in ferns appears to be higher than in most seed plants analysed to date. Within-population spatial genetic structure, neighbourhood size and clonal subrange in the seagrass Cymodocea nodosa. A new statistical method for haplotype reconstruction from population data.
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