Karyotypic stability in asparagus (Asparagus officinalis L.) cultivars revealed by rDNA in situ Hybridization.

Vista sencilla de ítem
dc.contributorNATONIEL FRANKLIN DE MELO, CPATSA.
dc.creatorMELO, N. F. de
dc.creatorGUERRA, M.
dc.date2018-05-11T00:33:13Z
dc.date2018-05-11T00:33:13Z
dc.date2002-03-26
dc.date2001
dc.date2018-05-11T00:33:13Z
dc.date.accessioned2026-07-07T05:49:23Z
dc.descriptionFour asparagus cultivars were cytologically studied by conventional staining and in situ hybridization, in order to evaluate both the variability among cultivars and the distribution pattern of 18S-25S rRNA genes. lhe mitotic and meiotic analysis with conventional chromosome staining did not show heteromorphisms or differences between cultivars. In situ hybridization with 18S and 25S rONA probes showed 6 chromosomes with 18S-25S rONA sites in the 4 studied genotypes. lhe New Jersey, Waltam Washington and G4X 14 cultivars presented 4 chromosomes with larger subterminal sites and 2 with interstitial sites of smaller size. In the Oeco cultivar, heteromorphism was verified in the size of the rONA sites, which were larger and subterminal in 3 chromosomes, and small and interstitial in 3 other chromosomes. lhe results suggest that asparagus cultivars may present only small differences in the number and distribution of rONA loci,
dc.identifierCytologia, Tokyo, v. 66, p. 127-131, 2001.
dc.identifierhttp://www.alice.cnptia.embrapa.br/alice/handle/doc/134506
dc.identifier.urihttp://hdl.handle.net/123456789/500618
dc.languageeng
dc.rightsopenAccess
dc.subjectVariabilidade
dc.subjectDNAr
dc.subjectGenetic
dc.subjectGenotypes
dc.subjectrDNA
dc.subjectAsparagus Officinalis
dc.subjectAspargo
dc.subjectCruzamento
dc.subjectGenética
dc.subjectGenótipo
dc.subjectHibridação
dc.subjectVariedade
dc.subjecthybridization
dc.subjectvariability
dc.subjectvarieties
dc.titleKaryotypic stability in asparagus (Asparagus officinalis L.) cultivars revealed by rDNA in situ Hybridization.
dc.typeArtigo de periódico

Archivos

Colecciones

Embrapa Semi-Árido (CPATSA)