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dc.contributor.authorSILVA, L. A. C.
dc.contributor.authorPAGLIARINI, M. S.
dc.contributor.authorSANTOS, S. A.
dc.contributor.authorSILVA, N.
dc.contributor.authorSOUZA, V. F.
dc.date.accessioned2018-01-29T23:36:03Z-
dc.date.available2018-01-29T23:36:03Z-
dc.date.created2012-12-06
dc.date.issued2012
dc.identifier.citationGenetics and Molecular Research, v. 11, n. 4, p. 4100-410-, 2012.
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/941635-
dc.descriptionThe genus Mesosetum is a primarily South American genus with 42 species. Mesosetum chaseae, regionally known as ?grama-do-cerrado?, is abundant in the Pantanal Matogrossense (Brazil); it is a valuable resource for livestock and for environmental conservation. We collected specimens from the Nhecolandia sub-region of the Brazilian Pantanal, located in Corumbá, Mato Grosso do Sul, Brazil. We examined chromosome number, ploidy level, meiotic behavior, microgametogenesis, and pollen viability of 10 accessions. All the accessions were diploid, derived from x = 8, presenting 2n = 2x = 16 chromosomes. Chromosomes paired as bivalents showing, predominantly, two terminal chiasmata. Interstitial chiasmata were rare. Meiosis was quite normal producing only a few abnormal tetrads in some accessions. Microgametogenesis, after two mitotic divisions, produced three-celled pollen grains. Pollen viability was variable among plant and accessions and was not correlated with meiotic abnormalities.
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectMesosetum chaseae
dc.subject'Grama-do-cerrado'
dc.subjectMicrogametogenesis
dc.subjectPollen viability
dc.titleChromosome number, microsporogenesis, microgametogenesis, and pollen viability in the Brazilian native grass Mesosetum chaseae (Poaceae).
dc.typeArtigo de periódico
dc.date.updated2018-01-29T23:36:03Zpt_BR
dc.subject.nalthesauruschromosome numberpt_BR
dc.subject.nalthesaurusmeiosispt_BR
riaa.ainfo.id941635
riaa.ainfo.lastupdate2018-01-29
dc.contributor.institutionUEM; UEM; SANDRA APARECIDA SANTOS, CPAP; UEM; UEM.
Aparece en las colecciones:Artigo em periódico indexado (CPAP)

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