Chromosome studies in Andean taxa of Alstroemeria (Alstroemeriaceae)

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Meiotic or mitotic chromosomes of seven Alstroemeria taxa, native in Argentina and Chile and with Andean distribution were studied: A. andina ssp. venustula, A. hookeri ssp. cummingiana, A. hookeri ssp. recumbens, A. pallida, A. patagonica, A. pseudospathulata and A. pygmaea. All were diploid with 2...

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Autor principal: Sanso, A.M.
Formato: JOUR
Materias:
A. hookeri
A. pallida
A. patagonica
A. pseudospathulata
A. pygmaea
Alstroemeria andina
Karyotype
Meiosis
Schickendantzia
chromosome
Alstroemeria
Alstroemeriaceae
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00244074_v138_n4_p451_Sanso
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_00244074_v138_n4_p451_Sanso2023-10-03T14:35:02Z Chromosome studies in Andean taxa of Alstroemeria (Alstroemeriaceae) Sanso, A.M. A. hookeri A. pallida A. patagonica A. pseudospathulata A. pygmaea Alstroemeria andina Karyotype Meiosis Schickendantzia chromosome Alstroemeria Alstroemeria andina Alstroemeriaceae Meiotic or mitotic chromosomes of seven Alstroemeria taxa, native in Argentina and Chile and with Andean distribution were studied: A. andina ssp. venustula, A. hookeri ssp. cummingiana, A. hookeri ssp. recumbens, A. pallida, A. patagonica, A. pseudospathulata and A. pygmaea. All were diploid with 2n = 16. Karyotypes of A. andina ssp. venustula and A. pygmaea were analysed, revealing similarity to previously analysed species. Thus, to all existing arguments for not retaining Schickendantzia as a separate genus, we can add another one which merges A. pygmaea with other Alstroemeria species, and does not support its taxonomic uniqueness. In general, the meiotic behaviour was normal, with regular formation of eight bivalents except in A. hookeri ssp. cummingiana, in one plant of which meiotic irregularities at various stages were observed. At the tetrad stage a large percentage of the cells presented micronuclei. The presence of 0-2 supernumerary chromosomes in A. hookeri ssp. recumbens is recorded. The karyotype asymmetry presented by most Alstroemeria species is discussed. © 2002 The Linnean Society of London. 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_00244074_v138_n4_p451_Sanso
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic A. hookeri
A. pallida
A. patagonica
A. pseudospathulata
A. pygmaea
Alstroemeria andina
Karyotype
Meiosis
Schickendantzia
chromosome
Alstroemeria
Alstroemeria andina
Alstroemeriaceae
spellingShingle A. hookeri
A. pallida
A. patagonica
A. pseudospathulata
A. pygmaea
Alstroemeria andina
Karyotype
Meiosis
Schickendantzia
chromosome
Alstroemeria
Alstroemeria andina
Alstroemeriaceae
Sanso, A.M.
Chromosome studies in Andean taxa of Alstroemeria (Alstroemeriaceae)
topic_facet A. hookeri
A. pallida
A. patagonica
A. pseudospathulata
A. pygmaea
Alstroemeria andina
Karyotype
Meiosis
Schickendantzia
chromosome
Alstroemeria
Alstroemeria andina
Alstroemeriaceae
description Meiotic or mitotic chromosomes of seven Alstroemeria taxa, native in Argentina and Chile and with Andean distribution were studied: A. andina ssp. venustula, A. hookeri ssp. cummingiana, A. hookeri ssp. recumbens, A. pallida, A. patagonica, A. pseudospathulata and A. pygmaea. All were diploid with 2n = 16. Karyotypes of A. andina ssp. venustula and A. pygmaea were analysed, revealing similarity to previously analysed species. Thus, to all existing arguments for not retaining Schickendantzia as a separate genus, we can add another one which merges A. pygmaea with other Alstroemeria species, and does not support its taxonomic uniqueness. In general, the meiotic behaviour was normal, with regular formation of eight bivalents except in A. hookeri ssp. cummingiana, in one plant of which meiotic irregularities at various stages were observed. At the tetrad stage a large percentage of the cells presented micronuclei. The presence of 0-2 supernumerary chromosomes in A. hookeri ssp. recumbens is recorded. The karyotype asymmetry presented by most Alstroemeria species is discussed. © 2002 The Linnean Society of London.
format JOUR
author Sanso, A.M.
author_facet Sanso, A.M.
author_sort Sanso, A.M.
title Chromosome studies in Andean taxa of Alstroemeria (Alstroemeriaceae)
title_short Chromosome studies in Andean taxa of Alstroemeria (Alstroemeriaceae)
title_full Chromosome studies in Andean taxa of Alstroemeria (Alstroemeriaceae)
title_fullStr Chromosome studies in Andean taxa of Alstroemeria (Alstroemeriaceae)
title_full_unstemmed Chromosome studies in Andean taxa of Alstroemeria (Alstroemeriaceae)
title_sort chromosome studies in andean taxa of alstroemeria (alstroemeriaceae)
url http://hdl.handle.net/20.500.12110/paper_00244074_v138_n4_p451_Sanso
work_keys_str_mv AT sansoam chromosomestudiesinandeantaxaofalstroemeriaalstroemeriaceae
_version_ 1782024773143887872

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