Chromosome numbers and ploidy levels of Paspalum species from subtropical South America (Poaceae)

Somatic chromosome numbers of 131 accessions belonging to 55 Paspalum species from subtropical South America have been determined. All species had x = 10 as a basic chromosome number, except P. almum which had x = 6. Six ploidy levels were found among species with tetraploidy as the most frequent co...

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Publicado:	2009
Materias:	Chromosome races Genetic resources Grasses Paspalum Polyploidy chromosome genetic resource grass polyploidy reproductive strategy Paspalum almum Paspalum conjugatum Paspalum ellipticum Paspalum erianthoides Paspalum ovale Paspalum paucifolium Paspalum remotum Poaceae
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09259864_v56_n4_p533_Hojsgaard http://hdl.handle.net/20.500.12110/paper_09259864_v56_n4_p533_Hojsgaard
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_09259864_v56_n4_p533_Hojsgaard
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spelling	paper:paper_09259864_v56_n4_p533_Hojsgaard2023-06-08T15:51:31Z Chromosome numbers and ploidy levels of Paspalum species from subtropical South America (Poaceae) Chromosome races Genetic resources Grasses Paspalum Polyploidy chromosome genetic resource grass polyploidy reproductive strategy Paspalum Paspalum almum Paspalum conjugatum Paspalum ellipticum Paspalum erianthoides Paspalum ovale Paspalum paucifolium Paspalum remotum Poaceae Somatic chromosome numbers of 131 accessions belonging to 55 Paspalum species from subtropical South America have been determined. All species had x = 10 as a basic chromosome number, except P. almum which had x = 6. Six ploidy levels were found among species with tetraploidy as the most frequent condition. New diploid and octoploid counts were reported. For Paspalum lilloi and P. glabrinode (both 2n = 2x = 20), and for P. ellipticum, P. erianthoides, P. ovale and P. remotum (all 2n = 8x = 80) sporophytic chromosome numbers are presented for the first time. Records that differ from previously reported counts are given for the following species: P. paucifolium (2n = 2x = 20), P. ceresia (2n = 6x = 60), P. conjugatum (2n = 6x = 60), P. alcalinum (2n = 6x = 60) and P. aff. arundinellum (2n + 1 = 5x + 1 = 51). These chromosome data are discussed in light of ploidy-level variation and implications for breeding systems within and among species. © 2008 Springer Science+Business Media B.V. 2009 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09259864_v56_n4_p533_Hojsgaard http://hdl.handle.net/20.500.12110/paper_09259864_v56_n4_p533_Hojsgaard
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Chromosome races Genetic resources Grasses Paspalum Polyploidy chromosome genetic resource grass polyploidy reproductive strategy Paspalum Paspalum almum Paspalum conjugatum Paspalum ellipticum Paspalum erianthoides Paspalum ovale Paspalum paucifolium Paspalum remotum Poaceae
spellingShingle	Chromosome races Genetic resources Grasses Paspalum Polyploidy chromosome genetic resource grass polyploidy reproductive strategy Paspalum Paspalum almum Paspalum conjugatum Paspalum ellipticum Paspalum erianthoides Paspalum ovale Paspalum paucifolium Paspalum remotum Poaceae Chromosome numbers and ploidy levels of Paspalum species from subtropical South America (Poaceae)
topic_facet	Chromosome races Genetic resources Grasses Paspalum Polyploidy chromosome genetic resource grass polyploidy reproductive strategy Paspalum Paspalum almum Paspalum conjugatum Paspalum ellipticum Paspalum erianthoides Paspalum ovale Paspalum paucifolium Paspalum remotum Poaceae
description	Somatic chromosome numbers of 131 accessions belonging to 55 Paspalum species from subtropical South America have been determined. All species had x = 10 as a basic chromosome number, except P. almum which had x = 6. Six ploidy levels were found among species with tetraploidy as the most frequent condition. New diploid and octoploid counts were reported. For Paspalum lilloi and P. glabrinode (both 2n = 2x = 20), and for P. ellipticum, P. erianthoides, P. ovale and P. remotum (all 2n = 8x = 80) sporophytic chromosome numbers are presented for the first time. Records that differ from previously reported counts are given for the following species: P. paucifolium (2n = 2x = 20), P. ceresia (2n = 6x = 60), P. conjugatum (2n = 6x = 60), P. alcalinum (2n = 6x = 60) and P. aff. arundinellum (2n + 1 = 5x + 1 = 51). These chromosome data are discussed in light of ploidy-level variation and implications for breeding systems within and among species. © 2008 Springer Science+Business Media B.V.
title	Chromosome numbers and ploidy levels of Paspalum species from subtropical South America (Poaceae)
title_short	Chromosome numbers and ploidy levels of Paspalum species from subtropical South America (Poaceae)
title_full	Chromosome numbers and ploidy levels of Paspalum species from subtropical South America (Poaceae)
title_fullStr	Chromosome numbers and ploidy levels of Paspalum species from subtropical South America (Poaceae)
title_full_unstemmed	Chromosome numbers and ploidy levels of Paspalum species from subtropical South America (Poaceae)
title_sort	chromosome numbers and ploidy levels of paspalum species from subtropical south america (poaceae)
publishDate	2009
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09259864_v56_n4_p533_Hojsgaard http://hdl.handle.net/20.500.12110/paper_09259864_v56_n4_p533_Hojsgaard
_version_	1768545254900760576

Chromosome numbers and ploidy levels of Paspalum species from subtropical South America (Poaceae)

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