Determination of ploidy and nuclear DNA content in populations of Atriplex halimus (Chenopodiaceae)

Nuclear DNA contents were determined by flow cytometry for 20 populations of the perennial C 4 shrub Atriplex halimus L. (Chenopodiaceae) originating from the Mediterranean basin and Fuerteventura (Canary Islands). Two populations were also analysed for chromosome number: one (from Ibiza, Spain), wi...

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Publicado:	2005
Materias:	Flow cytometry Intraspecific variation Subspecies DNA flow cytometry intraspecific variation ploidy Atlantic islands Atlantic Ocean Canary Islands Eastern Hemisphere Eurasia Europe Fuerteventura Las Palmas Macaronesia Mediterranean Region Mediterranean Sea oceanic regions Southern Europe Spain World Acer pensylvanicum Amaranthaceae Atriplex Atriplex halimus
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00244074_v147_n4_p441_Walker http://hdl.handle.net/20.500.12110/paper_00244074_v147_n4_p441_Walker
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_00244074_v147_n4_p441_Walker
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spelling	paper:paper_00244074_v147_n4_p441_Walker2023-06-08T14:52:20Z Determination of ploidy and nuclear DNA content in populations of Atriplex halimus (Chenopodiaceae) Flow cytometry Intraspecific variation Subspecies DNA flow cytometry intraspecific variation ploidy Atlantic islands Atlantic Ocean Canary Islands Eastern Hemisphere Eurasia Europe Fuerteventura Las Palmas Macaronesia Mediterranean Region Mediterranean Sea oceanic regions Southern Europe Spain World Acer pensylvanicum Amaranthaceae Atriplex Atriplex halimus Nuclear DNA contents were determined by flow cytometry for 20 populations of the perennial C 4 shrub Atriplex halimus L. (Chenopodiaceae) originating from the Mediterranean basin and Fuerteventura (Canary Islands). Two populations were also analysed for chromosome number: one (from Ibiza, Spain), with a 2C nuclear DNA content of 2.40 pg, was shown to be diploid (2n = 2x = 18), whilst the other (from Sicily, Italy), with 5.11 pg, was tetraploid (2n = 2x = 36). With respect to nuclear DNA content, two groups of populations were detected, diploids with 2.40-2.44 pg and tetraploids with 4.77-5.13 pg. The diploid populations were mainly from the western Mediterranean (Spain and France) and Fuerteventura, whereas tetraploids were generally, but not exclusively, from more arid areas in North Africa and the eastern Mediterranean. In general, the diploid and tetraploid populations corresponded to the subspecies halimus and schweinfurthii, respectively. For certain populations having morphologies intermediate between those considered typical of these two subspecies, nuclear DNA contents showed them to be tetraploid. There was significant variation in nuclear DNA content among the tetraploid populations, with greater values in the more easterly populations. © 2005 The Linnean Society of London. 2005 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00244074_v147_n4_p441_Walker http://hdl.handle.net/20.500.12110/paper_00244074_v147_n4_p441_Walker
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Flow cytometry Intraspecific variation Subspecies DNA flow cytometry intraspecific variation ploidy Atlantic islands Atlantic Ocean Canary Islands Eastern Hemisphere Eurasia Europe Fuerteventura Las Palmas Macaronesia Mediterranean Region Mediterranean Sea oceanic regions Southern Europe Spain World Acer pensylvanicum Amaranthaceae Atriplex Atriplex halimus
spellingShingle	Flow cytometry Intraspecific variation Subspecies DNA flow cytometry intraspecific variation ploidy Atlantic islands Atlantic Ocean Canary Islands Eastern Hemisphere Eurasia Europe Fuerteventura Las Palmas Macaronesia Mediterranean Region Mediterranean Sea oceanic regions Southern Europe Spain World Acer pensylvanicum Amaranthaceae Atriplex Atriplex halimus Determination of ploidy and nuclear DNA content in populations of Atriplex halimus (Chenopodiaceae)
topic_facet	Flow cytometry Intraspecific variation Subspecies DNA flow cytometry intraspecific variation ploidy Atlantic islands Atlantic Ocean Canary Islands Eastern Hemisphere Eurasia Europe Fuerteventura Las Palmas Macaronesia Mediterranean Region Mediterranean Sea oceanic regions Southern Europe Spain World Acer pensylvanicum Amaranthaceae Atriplex Atriplex halimus
description	Nuclear DNA contents were determined by flow cytometry for 20 populations of the perennial C 4 shrub Atriplex halimus L. (Chenopodiaceae) originating from the Mediterranean basin and Fuerteventura (Canary Islands). Two populations were also analysed for chromosome number: one (from Ibiza, Spain), with a 2C nuclear DNA content of 2.40 pg, was shown to be diploid (2n = 2x = 18), whilst the other (from Sicily, Italy), with 5.11 pg, was tetraploid (2n = 2x = 36). With respect to nuclear DNA content, two groups of populations were detected, diploids with 2.40-2.44 pg and tetraploids with 4.77-5.13 pg. The diploid populations were mainly from the western Mediterranean (Spain and France) and Fuerteventura, whereas tetraploids were generally, but not exclusively, from more arid areas in North Africa and the eastern Mediterranean. In general, the diploid and tetraploid populations corresponded to the subspecies halimus and schweinfurthii, respectively. For certain populations having morphologies intermediate between those considered typical of these two subspecies, nuclear DNA contents showed them to be tetraploid. There was significant variation in nuclear DNA content among the tetraploid populations, with greater values in the more easterly populations. © 2005 The Linnean Society of London.
title	Determination of ploidy and nuclear DNA content in populations of Atriplex halimus (Chenopodiaceae)
title_short	Determination of ploidy and nuclear DNA content in populations of Atriplex halimus (Chenopodiaceae)
title_full	Determination of ploidy and nuclear DNA content in populations of Atriplex halimus (Chenopodiaceae)
title_fullStr	Determination of ploidy and nuclear DNA content in populations of Atriplex halimus (Chenopodiaceae)
title_full_unstemmed	Determination of ploidy and nuclear DNA content in populations of Atriplex halimus (Chenopodiaceae)
title_sort	determination of ploidy and nuclear dna content in populations of atriplex halimus (chenopodiaceae)
publishDate	2005
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00244074_v147_n4_p441_Walker http://hdl.handle.net/20.500.12110/paper_00244074_v147_n4_p441_Walker
_version_	1768544308288290816

Determination of ploidy and nuclear DNA content in populations of Atriplex halimus (Chenopodiaceae)

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