ArticleAnnals of botany2008
Biosystematics and conservation: a case study with two enigmatic and uncommon species of Crassula from New Zealand.
Article in Annals of botany, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Complete Chloroplast Genome ofGenes · 2024Article
- New lepidium (brassicaceae) from new zealand.PhytoKeys · 2013Article
- Plant genome horizons: Michael Bennett's contribution to genome research.Annals of botany · 2008Article
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
BACKGROUND AND
aimsCrassula hunua and C. ruamahanga have been taxonomically controversial. Here their distinctiveness is assessed so that their taxonomic and conservation status can be clarified.
methodsPopulations of these two species were analysed using morphological, chromosomal and DNA sequence data. KEY
resultsIt proved impossible to differentiate between these two species using 12 key morphological characters. Populations were found to be chromosomally variable with 11 different chromosome numbers ranging from 2n = 42 to 2n = 100. Meiotic behaviour and levels of pollen stainability were both variable. Phylogenetic analyses showed that differences exist in both nuclear and plastid DNA sequences between individual plants, sometimes from the same population.
conclusionsThe results suggest that these plants are a species complex that has evolved through interspecific hybridization and polyploidy. Their high levels of chromosomal and DNA sequence variation present a problem for their conservation.
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