Karyotype, DNA content and meiotic behaviour in five South American species of Vicia (Fabaceae)

This paper presents the karyotype, DNA content and meiotic behaviour of five species of Vicia from Argentina (V. macrograminea Burk., V. graminea SM., V. epetiolaris Burk., V. pampicola Burk. and V. nana Vog.). All the species have the same chromosome number and karyotype formula (2n = 14; 6 m + 4 s...

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Detalles Bibliográficos
Autores principales: Naranjo, Carlos Alberto, Ferrari, María Rosa, Palermo, Ana María, Poggio, Lidia
Publicado: 1998
Materias:
Karyotype
Meiotic behaviour
NOR banding
Nuclear DNA content
Orthoselection
Vicia species
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03057364_v82_n6_p757_Naranjo
http://hdl.handle.net/20.500.12110/paper_03057364_v82_n6_p757_Naranjo
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_03057364_v82_n6_p757_Naranjo
record_format dspace
spelling paper:paper_03057364_v82_n6_p757_Naranjo2023-06-08T15:30:51Z Karyotype, DNA content and meiotic behaviour in five South American species of Vicia (Fabaceae) Naranjo, Carlos Alberto Ferrari, María Rosa Palermo, Ana María Poggio, Lidia Karyotype Meiotic behaviour NOR banding Nuclear DNA content Orthoselection Vicia species This paper presents the karyotype, DNA content and meiotic behaviour of five species of Vicia from Argentina (V. macrograminea Burk., V. graminea SM., V. epetiolaris Burk., V. pampicola Burk. and V. nana Vog.). All the species have the same chromosome number and karyotype formula (2n = 14; 6 m + 4 st + 4 t). Each species, however, displays a characteristic number and position of the nucleolar organizer region (NOR) and different sizes of the respective satellites, confirmed by Ag-NOR banding. Moreover, significant differences were found in the total chromosome volume (TCV) and DNA content of the species. Positive correlations between DNA content and TCV, and between DNA content and type of life cycle were also found. TCV and DNA content are lower in V. nana (annual) and higher in V. macrograminea (biennial-perennial). The material displayed marked karyotypic orthoselection, with similar karyotypes in all studied species, even when the overall chromosome size varied. Evolutionary changes in DNA amount are proportional to the relative length of each chromosome arm, maintaining karyotypic uniformity. Significant differences were found between the meiotic behaviour of V. graminea and that of the other species. V. graminea has a lower frequency of ring bivalents and chiasmata per cell, and also has a lower interstitial chiasma frequency. In general, the results are congruent with the morphological data reported for these species. Fil:Naranjo, C.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Ferrari, M.R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Palermo, A.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Poggio, L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 1998 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03057364_v82_n6_p757_Naranjo http://hdl.handle.net/20.500.12110/paper_03057364_v82_n6_p757_Naranjo
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Karyotype
Meiotic behaviour
NOR banding
Nuclear DNA content
Orthoselection
Vicia species
spellingShingle Karyotype
Meiotic behaviour
NOR banding
Nuclear DNA content
Orthoselection
Vicia species
Naranjo, Carlos Alberto
Ferrari, María Rosa
Palermo, Ana María
Poggio, Lidia
Karyotype, DNA content and meiotic behaviour in five South American species of Vicia (Fabaceae)
topic_facet Karyotype
Meiotic behaviour
NOR banding
Nuclear DNA content
Orthoselection
Vicia species
description This paper presents the karyotype, DNA content and meiotic behaviour of five species of Vicia from Argentina (V. macrograminea Burk., V. graminea SM., V. epetiolaris Burk., V. pampicola Burk. and V. nana Vog.). All the species have the same chromosome number and karyotype formula (2n = 14; 6 m + 4 st + 4 t). Each species, however, displays a characteristic number and position of the nucleolar organizer region (NOR) and different sizes of the respective satellites, confirmed by Ag-NOR banding. Moreover, significant differences were found in the total chromosome volume (TCV) and DNA content of the species. Positive correlations between DNA content and TCV, and between DNA content and type of life cycle were also found. TCV and DNA content are lower in V. nana (annual) and higher in V. macrograminea (biennial-perennial). The material displayed marked karyotypic orthoselection, with similar karyotypes in all studied species, even when the overall chromosome size varied. Evolutionary changes in DNA amount are proportional to the relative length of each chromosome arm, maintaining karyotypic uniformity. Significant differences were found between the meiotic behaviour of V. graminea and that of the other species. V. graminea has a lower frequency of ring bivalents and chiasmata per cell, and also has a lower interstitial chiasma frequency. In general, the results are congruent with the morphological data reported for these species.
author Naranjo, Carlos Alberto
Ferrari, María Rosa
Palermo, Ana María
Poggio, Lidia
author_facet Naranjo, Carlos Alberto
Ferrari, María Rosa
Palermo, Ana María
Poggio, Lidia
author_sort Naranjo, Carlos Alberto
title Karyotype, DNA content and meiotic behaviour in five South American species of Vicia (Fabaceae)
title_short Karyotype, DNA content and meiotic behaviour in five South American species of Vicia (Fabaceae)
title_full Karyotype, DNA content and meiotic behaviour in five South American species of Vicia (Fabaceae)
title_fullStr Karyotype, DNA content and meiotic behaviour in five South American species of Vicia (Fabaceae)
title_full_unstemmed Karyotype, DNA content and meiotic behaviour in five South American species of Vicia (Fabaceae)
title_sort karyotype, dna content and meiotic behaviour in five south american species of vicia (fabaceae)
publishDate 1998
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03057364_v82_n6_p757_Naranjo
http://hdl.handle.net/20.500.12110/paper_03057364_v82_n6_p757_Naranjo
work_keys_str_mv AT naranjocarlosalberto karyotypednacontentandmeioticbehaviourinfivesouthamericanspeciesofviciafabaceae
AT ferrarimariarosa karyotypednacontentandmeioticbehaviourinfivesouthamericanspeciesofviciafabaceae
AT palermoanamaria karyotypednacontentandmeioticbehaviourinfivesouthamericanspeciesofviciafabaceae
AT poggiolidia karyotypednacontentandmeioticbehaviourinfivesouthamericanspeciesofviciafabaceae
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