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Conceptual issues in phylogeny, taxonomy, and nomenclature Naturalis
Rasnitsyn, Alexandr P..
Phylogenetic hypotheses are designed and tested (usually in implicit form) on the basis of a set of presumptions, that is, of statements describing a certain order of things in nature. These statements are to be accepted as such, no matter whatever evidence for them exists, but only in the absence of reasonably sound evidence pleading against them. A set of the most current phylogenetic presumptions is discussed, and a factual example of a practical realization of the approach is presented. A comparison is made of the three main taxonomic approaches hitherto developed, viz., phenetics, cladistics, and phylistics (= evolutionary systematics). The latter term denotes an approach that tries explicitly to represent the basic features of traditional taxonomy...
Tipo: Article / Letter to the editor Palavras-chave: Phylogeny; Taxonomy; Phenetics; Cladistics; Phylistics; Principles of nomenclature; Type concept; Paleoentomology; Xyelidae (Vespida).
Ano: 1996 URL: http://www.repository.naturalis.nl/record/504631
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Revision of Coelogyne section Fuliginosae (Orchidaceae) Naturalis
Pelser, P.B.; Gravendeel, B.; Vogel, E.F. de.
Section Fuliginosae Pfitzer & Kraenzl. of the genus Coelogyne Lindl. is revised. With the help of a pollen study, principal component and cluster analyses with morphological characters and a survey of some additional data, two species are recognized (C. fimbriata and C. triplicatula), including one dubious variety (C. fimbriata var. acuminata). Eleven names are reduced to synonymy. Three species formerly included in sect. Fuliginosae by several authors are excluded ( (C. micrantha, C. treutleri and C. schilleriana).
Tipo: Article / Letter to the editor Palavras-chave: Coelogyne sect. Fuliginosae; Orchids; Phenetics; Pollinia; Systematics.
Ano: 2000 URL: http://www.repository.naturalis.nl/record/525407
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Chemical similarity among domesticated and wild genotypes of peanut based on n-alkanes profiles PAB
Souza,Renata Janaína Carvalho de; Silva,Suzene Izídio da; Oliveira,Antonio Fernando Morais de.
The objective of this work was to analyze the epicuticular n-alkane profile of domesticated and wild peanut genotypes. Foliar epicuticular n-alkanes of four Arachis hypogaea genotypes and two wild species - A. monticola and A. stenosperma - were analyzed by gas chromatography. Chemical relationships between them were evaluated using the Dice coefficient and UPGMA method. Two clusters were formed: one with four A. hypogaea genotypes and the other with the two wild species. There is more similarity between the BR1 and LIGO-PE06 genotypes and between the BRS 151 L-7 and BRS Havana genotypes.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Arachis hypogaea; Arachis monticola; Arachis stenosperma; Epicuticular wax; Hydric stress; Phenetics.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2010001100013
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