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Lukerino
Utente Senior
Città: Bari
600 Messaggi Tutti i Forum |
Inserito il - 12 gennaio 2012 : 14:50:59
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Un articolo interessante per gli addetti ai lavori.
A review of the use of genetic markers in orchid systematics with emphasis on allozymes Review Article Biochemical Systematics and Ecology, Volume 41, April 2012, Pages 62-73 Mi Yoon Chung, Myong Gi Chung
Abstract
Conservation of orchids is sometimes hampered by taxonomic problems, primarily due to the difficulty in delimiting species and/or genus boundaries. In this respect, a summary statistics for Nei’s genetic identity (I) for conspecific orchid populations and congeneric species pairs could be useful to delimit species boundaries. In this review, we summarized Nei’s genetic identity for conspecific populations and congeneric species by performing a literature survey. Average I values for conspecific populations ranged from 0.756 to 1.000 with a mean of 0.95 from 84 allozyme-based studies. In contrast, average I values for congeneric orchid species considerably varied, ranging from 0.000 to 0.978 with a mean of 0.453 from 190 allozyme-based studies. Most orchid species examined so far exhibit ‘diagnostic alleles’ at several allozyme loci, which strongly suggests that allozyme markers are still useful for delimiting species boundaries.
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Lukerino
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Lucabio
Utente Senior
Città: Mongardino
Prov.: Asti
Regione: Piemonte
4359 Messaggi Tutti i Forum |
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Lukerino
Utente Senior
Città: Bari
600 Messaggi Tutti i Forum |
Inserito il - 12 gennaio 2012 : 16:01:37
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Si, lo trovi sulla tua mail.
Lukerino |
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