Karyotipic asymmetry of both wild and cultivated species of pennisetum Report as inadecuate




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LISETE CHAMMA DAVIDE ; ALEXANDRO CAGLIARI ; SANDRO BARBOSA ; ANTÔNIO VANDER PEREIRA ;Bragantia 2010, 69 2

Author: VÂNIA HELENA TECHIO

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Bragantia ISSN: 0006-8705 editor@iac.sp.gov.br Instituto Agronômico de Campinas Brasil TECHIO, VÂNIA HELENA; CHAMMA DAVIDE, LISETE; CAGLIARI, ALEXANDRO; BARBOSA, SANDRO; VANDER PEREIRA, ANTÔNIO KARYOTIPIC ASYMMETRY OF BOTH WILD AND CULTIVATED SPECIES OF PENNISETUM Bragantia, vol.
69, núm.
2, 2010, pp.
273-279 Instituto Agronômico de Campinas Campinas, Brasil Available in: http:--www.redalyc.org-articulo.oa?id=90815731003 How to cite Complete issue More information about this article Journals homepage in redalyc.org Scientific Information System Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Non-profit academic project, developed under the open access initiative Karyotipic asymmetry species of Pennisetum 273 KARYOTIPIC ASYMMETRY OF BOTH WILD AND CULTIVATED SPECIES OF PENNISETUM ( 1 ) VÂNIA HELENA TECHIO (2*); LISETE CHAMMA DAVIDE (2); ALEXANDRO CAGLIARI (3); SANDRO BARBOSA (4); ANTÔNIO VANDER PEREIRA (5) ABSTRACT This study aimed the establishment of the relation between karyotipic asymmetry values obtained for different accessions of both wild and cultivated species of Pennisetum from Germplasm Bank of Embrapa Gado de Leite-Juiz de Fora-Minas Gerais State, Brazil.
Conventional cell cycle synchronization protocols and Feulgen staining method were used to obtain metaphases plates.
The wild-type accessions corresponded to the species P.
setosum (2n=6x=54), P.
nervosum (2n=4x=36), and P.
orientale (2n=4x=36), and the cultivated to P.
purpureum (2n=4x=28) and P.
glaucum (2n=2x=14).
No significant difference was found for the total length of chromosomes (p≥0.05) among the species.
The analysis of intra-chromosomal asymmetry (A1) and inter-chromosomal asymmetry (A2) has shown that P.
setosum has a tendency to chromosome asymmetry.
P.
nervosum, P.
orientale, and P.
purpureum have presented an intermediary level of asymmetry and P.
glaucum, low asymmetry.
Considering Stebbins criteria, the karyotype of P. glaucum and ...





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