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High genetic variability revealed by allozymic loci in the narrow endemic fern Polystichum otomasui (Dryopteridaceae) / Masayuki Maki in Heredity, 80 (5) (05/1998)
[article]
Titre : High genetic variability revealed by allozymic loci in the narrow endemic fern Polystichum otomasui (Dryopteridaceae) Type de document : Imprimé Auteurs : Masayuki Maki ; Y.J. Asada Année de publication : 1998 Article en page(s) : 604-610 Langues : Anglais (eng) Catégories : [CBNPMP-Thèmes] Ptéridophytes, fougères Mots-clés : Polystichum Résumé : Genetic variability was examined at 16 putative allozymic loci in the narrow endemic fern Polystichum otomasui. Although this species is distributed in only a few valleys within an approximately 10 km×6 km area on the Kyusyu Island of Japan, there are a relatively large number of individuals in this area. The percentage of polymorphic loci (P), the number of alleles per locus (A), the observed heterozygosity (HO) and the expected heterozygosity (HE) were 61.9, 1.93, 0.166 and 0.177, respectively, at the population level, and P, A and HE were 81.3, 2.69 and 0.199, respectively, at the species level, indicating that P. otomasui has extremely high allozymic variation for a fern species. The GST value among the 10 populations examined within the range was 0.108, suggesting that the interpopulation gene flow is high enough to impede genetic structuring. The mating system estimates, Wright's fixation index and the intragametophytic selfing rate, indicate that the species is outcrossing. High genetic variability, in spite of narrowness of the distribution, may have resulted from a recent rapid decline in the population and/or the large effective population size resulting from the extensive gene flow among the populations. Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=137527
in Heredity > 80 (5) (05/1998) . - 604-610Maki, Masayuki, Asada, Y.J. 1998 High genetic variability revealed by allozymic loci in the narrow endemic fern Polystichum otomasui (Dryopteridaceae). Heredity, 80(5): 604-610.Documents numériques
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Article (1998)Adobe Acrobat PDF Patterns of growth and reproduction in a natural population of the fern Polystichum acrostichoides / Gary K. Greer in American Fern Journal, 90 (2) (04/2000)
[article]
Titre : Patterns of growth and reproduction in a natural population of the fern Polystichum acrostichoides Type de document : Imprimé Auteurs : Gary K. Greer ; Brian C. McCarthy Année de publication : 2000 Article en page(s) : 60-76 Langues : Anglais (eng) Catégories : [CBNPMP-Thèmes] Ptéridophytes, fougères Mots-clés : Polystichum En ligne : https://www.biodiversitylibrary.org/page/32034722 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=137528
in American Fern Journal > 90 (2) (04/2000) . - 60-76Greer, Gary K., McCarthy, Brian C. 2000 Patterns of growth and reproduction in a natural population of the fern Polystichum acrostichoides. American Fern Journal, 90(2): 60-76.