| Registro completo |
| Provedor de dados: |
Ciência Rural
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| País: |
Brazil
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| Título: |
Cytogenetic analyses in Paspalum L. reveal new diploid species and accessions
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| Autores: |
Pozzobon,Marisa Toniolo
Machado,Ana Caroline de Carvalho
Vaio,Magdalena
Valls,José Francisco Montenegro
Peñaloza,Andréa del Pilar de Souza
Santos,Sileuza dos
Côrtes,Ana Luiza
Rua,Gabriel Hugo
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| Data: |
2008-08-01
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| Ano: |
2008
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| Palavras-chave: |
Chromosome
Diploid
Polyploid
Ploidy level
Hybrid
Genetic resources
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| Resumo: |
Chromosome numbers were counted in 126 new accessions of 50 Paspalum species from Brazil, Argentina, Paraguay and Bolivia. The chromosome numbers 2n=12, 20, 24, 30, 40, 50, 60, 80 were confirmed. Chromosome numbers for P. arenarium (2n=20), P. barretoi (2n=20), P. aff. ceresia (2n=40), P. corcovadense (2n=20), P. crispulum (2n=20), P. flaccidum (2n=40), P. nummularium (2n=20), P. scalare (2n=20), P. vescum (2n=20) and P. rectum (2n=20) and a diploid cytotype of P. malacophyllum are reported for the first time. The predominance of tetraploid accessions (43.6%) was confirmed, but an unusually high number of diploid species (44%) and accessions (35.7%) was found. These results open new perspectives for breeding programs, phylogenetic studies, and for research on apomixis control, since diploids of Paspalum are typically sexual.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782008000500014
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| Editor: |
Universidade Federal de Santa Maria
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| Relação: |
10.1590/S0103-84782008000500014
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| Formato: |
text/html
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| Fonte: |
Ciência Rural v.38 n.5 2008
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| Direitos: |
info:eu-repo/semantics/openAccess
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