Chromosome numbers and meiotic behaviour in South American species of Hybanthus Jacq. and Anchietea A. St.-Hil. (violaceae)

Chromosome numbers and meiotic behaviour of 10 species of Hybanthus and one of Anchietea in South America were analysed in the present study. Most of the previous chromosomal data relating to Hybanthus were obtained from Australian species, and chromosomal information relating to Anchietea was not a...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Seo, M.N., Sanso, A.M., Xifreda, C.C.
Formato: JOUR
Materias:
Anchietea
B-chromosomes
Hybanthus
Ionidium
Meiotic behaviour
Polyploidy
Anchietea parvifolia
Hybanthus atropurpureus
Leucopogon
Violaceae
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_11263504_v144_n2_p340_Seo
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_11263504_v144_n2_p340_Seo
record_format dspace
spelling todo:paper_11263504_v144_n2_p340_Seo2023-10-03T16:06:41Z Chromosome numbers and meiotic behaviour in South American species of Hybanthus Jacq. and Anchietea A. St.-Hil. (violaceae) Seo, M.N. Sanso, A.M. Xifreda, C.C. Anchietea B-chromosomes Hybanthus Ionidium Meiotic behaviour Polyploidy Anchietea Anchietea parvifolia Hybanthus Hybanthus atropurpureus Ionidium Leucopogon Violaceae Chromosome numbers and meiotic behaviour of 10 species of Hybanthus and one of Anchietea in South America were analysed in the present study. Most of the previous chromosomal data relating to Hybanthus were obtained from Australian species, and chromosomal information relating to Anchietea was not available until now. Three different chromosome numbers were found: 2n = 16 for Anchietea parvifolia Hallier f., Hybanthus bigibbosus (A. St.-Hil.) Hassl., H. paraguariensis (Chodat) Schulze-Menz and H. atropurpureus (A. St.-Hil.) Taub.; 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. These were the first reports for eight species of Hybanthus and the first one for the genus Anchietea. For H. communis and H. atropurpureus, we confirm their chromosome numbers and describe their meiotic behaviour. The presence of B-chromosomes in H. atropurpureus, H. communis and H. hasslerianus is reported here for the first time in the genus Hybanthus. In the light of these findings, polyploidy likely played an important role during the speciation of this heterogeneous generic assembly. © 2010 Società Botanica Italiana. Fil:Seo, M.N. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Sanso, A.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_11263504_v144_n2_p340_Seo
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Anchietea
B-chromosomes
Hybanthus
Ionidium
Meiotic behaviour
Polyploidy
Anchietea
Anchietea parvifolia
Hybanthus
Hybanthus atropurpureus
Ionidium
Leucopogon
Violaceae
spellingShingle Anchietea
B-chromosomes
Hybanthus
Ionidium
Meiotic behaviour
Polyploidy
Anchietea
Anchietea parvifolia
Hybanthus
Hybanthus atropurpureus
Ionidium
Leucopogon
Violaceae
Seo, M.N.
Sanso, A.M.
Xifreda, C.C.
Chromosome numbers and meiotic behaviour in South American species of Hybanthus Jacq. and Anchietea A. St.-Hil. (violaceae)
topic_facet Anchietea
B-chromosomes
Hybanthus
Ionidium
Meiotic behaviour
Polyploidy
Anchietea
Anchietea parvifolia
Hybanthus
Hybanthus atropurpureus
Ionidium
Leucopogon
Violaceae
description Chromosome numbers and meiotic behaviour of 10 species of Hybanthus and one of Anchietea in South America were analysed in the present study. Most of the previous chromosomal data relating to Hybanthus were obtained from Australian species, and chromosomal information relating to Anchietea was not available until now. Three different chromosome numbers were found: 2n = 16 for Anchietea parvifolia Hallier f., Hybanthus bigibbosus (A. St.-Hil.) Hassl., H. paraguariensis (Chodat) Schulze-Menz and H. atropurpureus (A. St.-Hil.) Taub.; 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. These were the first reports for eight species of Hybanthus and the first one for the genus Anchietea. For H. communis and H. atropurpureus, we confirm their chromosome numbers and describe their meiotic behaviour. The presence of B-chromosomes in H. atropurpureus, H. communis and H. hasslerianus is reported here for the first time in the genus Hybanthus. In the light of these findings, polyploidy likely played an important role during the speciation of this heterogeneous generic assembly. © 2010 Società Botanica Italiana.
format JOUR
author Seo, M.N.
Sanso, A.M.
Xifreda, C.C.
author_facet Seo, M.N.
Sanso, A.M.
Xifreda, C.C.
author_sort Seo, M.N.
title Chromosome numbers and meiotic behaviour in South American species of Hybanthus Jacq. and Anchietea A. St.-Hil. (violaceae)
title_short Chromosome numbers and meiotic behaviour in South American species of Hybanthus Jacq. and Anchietea A. St.-Hil. (violaceae)
title_full Chromosome numbers and meiotic behaviour in South American species of Hybanthus Jacq. and Anchietea A. St.-Hil. (violaceae)
title_fullStr Chromosome numbers and meiotic behaviour in South American species of Hybanthus Jacq. and Anchietea A. St.-Hil. (violaceae)
title_full_unstemmed Chromosome numbers and meiotic behaviour in South American species of Hybanthus Jacq. and Anchietea A. St.-Hil. (violaceae)
title_sort chromosome numbers and meiotic behaviour in south american species of hybanthus jacq. and anchietea a. st.-hil. (violaceae)
url http://hdl.handle.net/20.500.12110/paper_11263504_v144_n2_p340_Seo
work_keys_str_mv AT seomn chromosomenumbersandmeioticbehaviourinsouthamericanspeciesofhybanthusjacqandanchieteaasthilviolaceae
AT sansoam chromosomenumbersandmeioticbehaviourinsouthamericanspeciesofhybanthusjacqandanchieteaasthilviolaceae
AT xifredacc chromosomenumbersandmeioticbehaviourinsouthamericanspeciesofhybanthusjacqandanchieteaasthilviolaceae
_version_ 1782029028648026112

Ejemplares similares