Use este identificador para citar ou linkar para este item: https://locus.ufv.br//handle/123456789/21562
Tipo: Artigo
Título: Cytogenetic and flow cytometry data expand knowledge of genome evolution in three Coffea species
Autor(es): Clarindo, Wellington Ronildo
Carvalho, Carlos Roberto
Mendonça, Maria Andréia Corrêa
Abstract: Karyotype and nuclear 2C-value data are considered important in taxonomic and evolutionary approaches in Coffea. Still, new methods are needed to further support such studies, especially to determine the progenitors of Coffea arabica. In this work, new cytogenetic and flow cytometry data were used to compare Coffea arabica, Coffea canephora and Coffea congensis. These data corroborate the hypothesis that C. canephora and C. congensis originated from a single ancestor, whose basic chromosome number was x = 11. In agreement with the observations of other authors, the karyotype and mean 2C-values confirm that C. arabica is a true allotetraploid originating from two diploid Coffea species with similar genomes. Although C. canephora and C. congensis have been considered potential progenitors of C. arabica, karyotype comparison revealed that only one of these species may be parental to C. arabica. These accurate cytogenetic and flow cytometry data contribute to expand our knowledge of the Coffea genome, as well as of possible progenitors of C. arabica.
Palavras-chave: Coffea
Nuclear 2C-value
Base composition
Karyotype
Genome evolution
Flow cytometry
Editor: Plant Systematics and Evolution
Tipo de Acesso: Springer-Verlag
URI: https://doi.org/10.1007/s00606-012-0595-7
http://www.locus.ufv.br/handle/123456789/21562
Data do documento: Abr-2012
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