Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1064617
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dc.contributor.authorCHIAVEGATTO, R. B.pt_BR
dc.contributor.authorPAULA, C. M. P.pt_BR
dc.contributor.authorSOUZA SOBRINHO, F. dept_BR
dc.contributor.authorBENITES, F. R. G.pt_BR
dc.contributor.authorTECHIO, V. H.pt_BR
dc.date.accessioned2017-02-17T11:11:11Zpt_BR
dc.date.available2017-02-17T11:11:11Zpt_BR
dc.date.created2017-02-17pt_BR
dc.date.issued2016pt_BR
dc.identifier.citationGenetics and Molecular Research, v. 15, n. 4, 2016.pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1064617pt_BR
dc.descriptionAbstract Cynodon is a genus of plants with forage potential that has attracted the interest of breeders. These species have high morphological variability in a large number of varieties and cytotypes, hampering identification. This study aimed to determine the karyotype asymmetry index among accessions of Cynodon to discriminate between them. Karyotype symmetry was based on three estimates, which were compared. The basic number for the genus is x = 9. The results of the chromosome count and DNA quantification, respectively, were as follows: two diploid accessions (2n = 2x = 18 and 1.08 ± 0.094 to 1.17 ± 0.036 pg DNA and ± standard deviation), one triploid accession (2n = 3x = 27 and 1.63 ± 0.017 pg DNA), four tetraploid accessions (2n = 4x = 36 and 1.88 ± 0.069 to 2.10 ± 0.07 pg DNA), and one pentaploid accession (2n = 5x = 45 and 2.55 ± 0.098 pg DNA). C. incompletus var. hirsutus had the longest total length of the haploid lot (29.05 µm), with chromosomes that ranged from 1.7 to 6.2 µm in length. On the basis of the karyotype asymmetry indices, the accessions were divided into two groups: 1) C. dactylon var. dactylon, C. transvaalensis, C. dactylon var. polevansii, three accessions of Cynodon sp, and C. nlemfuensis; and 2) C. incompletus var. hirsutus. This is the first description of tetraploidy in C. transvaalensis. The karyotypic data facilitated a determination of the degree of proximity between the accessions.pt_BR
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectChromosome symmetrypt_BR
dc.subjectDNA contentpt_BR
dc.titleKaryotype asymmetry in Cynodon Rich. (Poaceae) accessions.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2017-03-02T11:11:11Zpt_BR
dc.subject.nalthesaurusCynodonpt_BR
dc.subject.nalthesauruspolyploidypt_BR
dc.format.extent212 p.pt_BR
riaa.ainfo.id1064617pt_BR
riaa.ainfo.lastupdate2017-03-02pt_BR
dc.contributor.institutionR.B. Chiavegatto, UFLA; C. M. P. PAULA, UFLA; FAUSTO DE SOUZA SOBRINHO, CNPGL; FLAVIO RODRIGO GANDOLFI BENITES, CNPGL; V.H. TECHIO, UFLA.pt_BR
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