Meiotic studies in ten species of Hybanthus Jacq. (Violaceae) from South America
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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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_00114545_v74_n2_p141_Seo https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_00114545_v74_n2_p141_Seo_oai |
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I28-R145-paper_00114545_v74_n2_p141_Seo_oai2024-08-16 Seo, M.N. 2009 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. application/pdf http://hdl.handle.net/20.500.12110/paper_00114545_v74_n2_p141_Seo info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar Cytologia 2009;74(2):141-146 Argentina Basic chromosome number Hybanthus subgenus ionidium Meiotic behaviour Polyploidy South America Hybanthus Hybanthus atropurpureus Ionidium Leucopogon Violaceae Meiotic studies in ten species of Hybanthus Jacq. (Violaceae) from South America info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_00114545_v74_n2_p141_Seo_oai |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-145 |
| collection |
Repositorio Digital de la Universidad de Buenos Aires (UBA) |
| 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 https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_00114545_v74_n2_p141_Seo_oai |
| work_keys_str_mv |
AT seomn meioticstudiesintenspeciesofhybanthusjacqviolaceaefromsouthamerica |
| _version_ |
1809357052953231360 |