Meiotic studies in ten species of Hybanthus Jacq. (Violaceae) from South America

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Chromosome numbers and meiotic behaviour of 10 native species of Hybanthus in South America were analyzed. 3 different chromosome numbers were found: 2n=16 for Hybanthus atropurpureus (A. St.-Hil.) Taub., H. bigibbosus (A. St.-Hil.) Hassl. and H. paraguariensis (Chodat) Schulze-Menz, 2n=32 for H. bi...

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Autor principal: Seo, M.N.
Formato: Artículo publishedVersion
Lenguaje:Inglés
Publicado: 2009
Materias:
Argentina
Basic chromosome number
Hybanthus subgenus ionidium
Meiotic behaviour
Polyploidy
South America
Hybanthus
Hybanthus atropurpureus
Ionidium
Leucopogon
Violaceae
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00114545_v74_n2_p141_Seo
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling paperaa:paper_00114545_v74_n2_p141_Seo2023-06-12T16:41:25Z Meiotic studies in ten species of Hybanthus Jacq. (Violaceae) from South America Cytologia 2009;74(2):141-146 Seo, M.N. Argentina Basic chromosome number Hybanthus subgenus ionidium Meiotic behaviour Polyploidy South America Hybanthus Hybanthus atropurpureus Ionidium Leucopogon Violaceae Chromosome numbers and meiotic behaviour of 10 native species of Hybanthus in South America were analyzed. 3 different chromosome numbers were found: 2n=16 for Hybanthus atropurpureus (A. St.-Hil.) Taub., H. bigibbosus (A. St.-Hil.) Hassl. and H. paraguariensis (Chodat) Schulze-Menz, 2n=32 for H. bicolor (A. St.-Hil.) Baill., H. calceolaria (L.) Oken, H. communis (A. St.-Hil.) Taub., H. hasslerianus (Chodat) Hassl., H. leucopogon Sparre and H. nanus (A. St.-Hil.) Paula-Souza, and 2n=48 for H. longistylus Schulze-Menz. This is one of the first reports for 8 analyzed species. Nowadays, the basic chromosome numbers in the South American Hybanthus species are under discussion. The presence of 1 tetravalent in H. atropurpureus, H. bigibbosus and H. paraguariensis (2n=16) would suggest the duplication of chromosome sets, and therefore would indicate that the basic chromosome number is x=4, at least, for this group of South American Hybanthus species. The studied species would be tetraploids (2n=4x=16), octoploids (2n=8x=32) and dodecaploids in H. longistylus (2n=12r=48). In light of these findings, such polyploidy would likely have played an important role during the speciation of this heterogenerous generic assembly. © 2009 The Japan Mendel Society. Fil:Seo, M.N. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2009 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion application/pdf eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00114545_v74_n2_p141_Seo
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
language Inglés
orig_language_str_mv eng
topic Argentina
Basic chromosome number
Hybanthus subgenus ionidium
Meiotic behaviour
Polyploidy
South America
Hybanthus
Hybanthus atropurpureus
Ionidium
Leucopogon
Violaceae
spellingShingle Argentina
Basic chromosome number
Hybanthus subgenus ionidium
Meiotic behaviour
Polyploidy
South America
Hybanthus
Hybanthus atropurpureus
Ionidium
Leucopogon
Violaceae
Seo, M.N.
Meiotic studies in ten species of Hybanthus Jacq. (Violaceae) from South America
topic_facet Argentina
Basic chromosome number
Hybanthus subgenus ionidium
Meiotic behaviour
Polyploidy
South America
Hybanthus
Hybanthus atropurpureus
Ionidium
Leucopogon
Violaceae
description Chromosome numbers and meiotic behaviour of 10 native species of Hybanthus in South America were analyzed. 3 different chromosome numbers were found: 2n=16 for Hybanthus atropurpureus (A. St.-Hil.) Taub., H. bigibbosus (A. St.-Hil.) Hassl. and H. paraguariensis (Chodat) Schulze-Menz, 2n=32 for H. bicolor (A. St.-Hil.) Baill., H. calceolaria (L.) Oken, H. communis (A. St.-Hil.) Taub., H. hasslerianus (Chodat) Hassl., H. leucopogon Sparre and H. nanus (A. St.-Hil.) Paula-Souza, and 2n=48 for H. longistylus Schulze-Menz. This is one of the first reports for 8 analyzed species. Nowadays, the basic chromosome numbers in the South American Hybanthus species are under discussion. The presence of 1 tetravalent in H. atropurpureus, H. bigibbosus and H. paraguariensis (2n=16) would suggest the duplication of chromosome sets, and therefore would indicate that the basic chromosome number is x=4, at least, for this group of South American Hybanthus species. The studied species would be tetraploids (2n=4x=16), octoploids (2n=8x=32) and dodecaploids in H. longistylus (2n=12r=48). In light of these findings, such polyploidy would likely have played an important role during the speciation of this heterogenerous generic assembly. © 2009 The Japan Mendel Society.
format Artículo
Artículo
publishedVersion
author Seo, M.N.
author_facet Seo, M.N.
author_sort Seo, M.N.
title Meiotic studies in ten species of Hybanthus Jacq. (Violaceae) from South America
title_short Meiotic studies in ten species of Hybanthus Jacq. (Violaceae) from South America
title_full Meiotic studies in ten species of Hybanthus Jacq. (Violaceae) from South America
title_fullStr Meiotic studies in ten species of Hybanthus Jacq. (Violaceae) from South America
title_full_unstemmed Meiotic studies in ten species of Hybanthus Jacq. (Violaceae) from South America
title_sort meiotic studies in ten species of hybanthus jacq. (violaceae) from south america
publishDate 2009
url http://hdl.handle.net/20.500.12110/paper_00114545_v74_n2_p141_Seo
work_keys_str_mv AT seomn meioticstudiesintenspeciesofhybanthusjacqviolaceaefromsouthamerica
_version_ 1769810261487648768

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