Further cytogenetical studies on diploid and polyploid species of Eryngium L. (Saniculoideae, Apiaceae) from Argentina

Meiotic studies are carried out in 7 species of Eryngium L. (Saniculoideae, Apiaceae), belonging to both sections Foetida and Panniculata. The chromosome number of E. dorae Norm. (n = 8) (Foetida) is reported for the first time, while the gametic chromosome number of E. nudicaule Lam. (n = 7) (Foeti...

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Detalles Bibliográficos
Autores principales: O'Leary, N., Calviño, C.I., Greizerstein, E., Martínez, S., Poggio, L.
Formato: JOUR
Materias:
Argentina
article
chromosome analysis
chromosome bivalent
chromosome number
controlled study
cytogenetics
diploidy
Eryngium
gamete
hexaploidy
karyotyping
meiosis
natural population
nonhuman
plant cell
plant chromosome
plant genetics
pollen analysis
polyploidy
species comparison
species difference
species differentiation
species diversity
Chromosomes
Crosses, Genetic
Diploidy
Flowers
Karyotyping
Meiosis
Metaphase
Pollen
Polyploidy
Apiaceae
Saniculoideae
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00180661_v140_n2_p129_OLeary
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_00180661_v140_n2_p129_OLeary2023-10-03T14:15:18Z Further cytogenetical studies on diploid and polyploid species of Eryngium L. (Saniculoideae, Apiaceae) from Argentina O'Leary, N. Calviño, C.I. Greizerstein, E. Martínez, S. Poggio, L. Argentina article chromosome analysis chromosome bivalent chromosome number controlled study cytogenetics diploidy Eryngium gamete hexaploidy karyotyping meiosis natural population nonhuman plant cell plant chromosome plant genetics pollen analysis polyploidy species comparison species difference species differentiation species diversity Argentina Chromosomes Crosses, Genetic Diploidy Eryngium Flowers Karyotyping Meiosis Metaphase Pollen Polyploidy Apiaceae Eryngium Saniculoideae Meiotic studies are carried out in 7 species of Eryngium L. (Saniculoideae, Apiaceae), belonging to both sections Foetida and Panniculata. The chromosome number of E. dorae Norm. (n = 8) (Foetida) is reported for the first time, while the gametic chromosome number of E. nudicaule Lam. (n = 7) (Foetida) and E. eburneum Decne. (n = 8), E. horridum Malme (n = 8), E. megapotamicum Malme (n = 16), E. mesopotamicum Pedersen (n = 24), and E. pandanifolium Cham. et Schlechtd. (n = 24) (all belonging to Panniculata) is confirmed in several natural populations. Whereas in section Foetida all species are diploids and two basic chromosome numbers are present (x = 8 and x = 7), in section Panniculata all species are x = 8 but there are three different ploidy levels (diploid, tetraploid, hexaploid). This study reveals that meiosis in all species is normal, with regular bivalent formation in all studied cells. Furthermore, the pollen stainability is above 80% in all cases. These data, together with the previous karyotype analyses, will contribute to the clarification of the relationships between members of both sections, where different mechanisms of speciation have been postulated. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00180661_v140_n2_p129_OLeary
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Argentina
article
chromosome analysis
chromosome bivalent
chromosome number
controlled study
cytogenetics
diploidy
Eryngium
gamete
hexaploidy
karyotyping
meiosis
natural population
nonhuman
plant cell
plant chromosome
plant genetics
pollen analysis
polyploidy
species comparison
species difference
species differentiation
species diversity
Argentina
Chromosomes
Crosses, Genetic
Diploidy
Eryngium
Flowers
Karyotyping
Meiosis
Metaphase
Pollen
Polyploidy
Apiaceae
Eryngium
Saniculoideae
spellingShingle Argentina
article
chromosome analysis
chromosome bivalent
chromosome number
controlled study
cytogenetics
diploidy
Eryngium
gamete
hexaploidy
karyotyping
meiosis
natural population
nonhuman
plant cell
plant chromosome
plant genetics
pollen analysis
polyploidy
species comparison
species difference
species differentiation
species diversity
Argentina
Chromosomes
Crosses, Genetic
Diploidy
Eryngium
Flowers
Karyotyping
Meiosis
Metaphase
Pollen
Polyploidy
Apiaceae
Eryngium
Saniculoideae
O'Leary, N.
Calviño, C.I.
Greizerstein, E.
Martínez, S.
Poggio, L.
Further cytogenetical studies on diploid and polyploid species of Eryngium L. (Saniculoideae, Apiaceae) from Argentina
topic_facet Argentina
article
chromosome analysis
chromosome bivalent
chromosome number
controlled study
cytogenetics
diploidy
Eryngium
gamete
hexaploidy
karyotyping
meiosis
natural population
nonhuman
plant cell
plant chromosome
plant genetics
pollen analysis
polyploidy
species comparison
species difference
species differentiation
species diversity
Argentina
Chromosomes
Crosses, Genetic
Diploidy
Eryngium
Flowers
Karyotyping
Meiosis
Metaphase
Pollen
Polyploidy
Apiaceae
Eryngium
Saniculoideae
description Meiotic studies are carried out in 7 species of Eryngium L. (Saniculoideae, Apiaceae), belonging to both sections Foetida and Panniculata. The chromosome number of E. dorae Norm. (n = 8) (Foetida) is reported for the first time, while the gametic chromosome number of E. nudicaule Lam. (n = 7) (Foetida) and E. eburneum Decne. (n = 8), E. horridum Malme (n = 8), E. megapotamicum Malme (n = 16), E. mesopotamicum Pedersen (n = 24), and E. pandanifolium Cham. et Schlechtd. (n = 24) (all belonging to Panniculata) is confirmed in several natural populations. Whereas in section Foetida all species are diploids and two basic chromosome numbers are present (x = 8 and x = 7), in section Panniculata all species are x = 8 but there are three different ploidy levels (diploid, tetraploid, hexaploid). This study reveals that meiosis in all species is normal, with regular bivalent formation in all studied cells. Furthermore, the pollen stainability is above 80% in all cases. These data, together with the previous karyotype analyses, will contribute to the clarification of the relationships between members of both sections, where different mechanisms of speciation have been postulated.
format JOUR
author O'Leary, N.
Calviño, C.I.
Greizerstein, E.
Martínez, S.
Poggio, L.
author_facet O'Leary, N.
Calviño, C.I.
Greizerstein, E.
Martínez, S.
Poggio, L.
author_sort O'Leary, N.
title Further cytogenetical studies on diploid and polyploid species of Eryngium L. (Saniculoideae, Apiaceae) from Argentina
title_short Further cytogenetical studies on diploid and polyploid species of Eryngium L. (Saniculoideae, Apiaceae) from Argentina
title_full Further cytogenetical studies on diploid and polyploid species of Eryngium L. (Saniculoideae, Apiaceae) from Argentina
title_fullStr Further cytogenetical studies on diploid and polyploid species of Eryngium L. (Saniculoideae, Apiaceae) from Argentina
title_full_unstemmed Further cytogenetical studies on diploid and polyploid species of Eryngium L. (Saniculoideae, Apiaceae) from Argentina
title_sort further cytogenetical studies on diploid and polyploid species of eryngium l. (saniculoideae, apiaceae) from argentina
url http://hdl.handle.net/20.500.12110/paper_00180661_v140_n2_p129_OLeary
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