Use este identificador para citar ou linkar para este item: https://locus.ufv.br//handle/123456789/14860
Tipo: Artigo
Título: Refinement of the karyological aspects of Psidium guineense (Swartz, 1788): a comparison with Psidium guajava (Linnaeus, 1753)
Autor(es): Marques, Anelise Machado
Tuler, Amélia Carlos
Carvalho, Carlos Roberto
Carrijo, Tatiana Tavares
Ferreira, Marcia Flores da Silva
Clarindo, Wellington Ronildo
Abstract: Euploidy plays an important role in the evolution and diversification of Psidium Linnaeus, 1753. However, few data about the nuclear DNA content, chromosome characterization (morphometry and class) and molecular markers have been reported for this genus. In this context, the present study aims to shed light on the genome of Psidium guineense Swartz, 1788, comparing it with Psidium guajava Linnaeus, 1753. Using flow cytometry, the nuclear 2C value of Psidium guineense was 2C = 1.85 picograms (pg), and the karyotype showed 2n = 4x = 44 chromosomes. Thus, Psidium guineense has four chromosome sets, in accordance with the basic chromosome number of Psidium (x = 11). In addition, karyomorphometric analysis revealed morphologically identical chromosome groups in the karyotype of Psidium guineense. The high transferability of microsatellites (98.6%) further corroborates with phylogenetic relationship between Psidium guajava and Psidium guineense. Based on the data regarding nuclear genome size, karyotype morphometry and molecular markers of Psidium guineense and Psidium guajava (2C = 0.95 pg, 2n = 2x = 22 chromosomes), Psidium guineense is a tetraploid species. These data reveal the role of euploidy in the diversification of the genus Psidium.
Palavras-chave: Psidium
Polyploidy
Karyotype evolution
Cytogenetic
Flow cytometry
SSR markers
Editor: Comparative Cytogenetics
Tipo de Acesso: Open Access
URI: http://dx.doi.org/ 10.3897/CompCytogen.v10i1.6462
http://www.locus.ufv.br/handle/123456789/14860
Data do documento: 2-Fev-2016
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