Development and cytology of pollen in Dahlstedtia Malme (Leguminosae : Papilionoideae)

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dc.contributor.authorTeixeira, S. D.
dc.contributor.authorForni-Martins, E. R.
dc.contributor.authorRanga, N. T.
dc.contributor.institutionUniversidade Estadual de Campinas (UNICAMP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:30:42Z
dc.date.available2014-05-20T15:30:42Z
dc.date.issued2002-04-01
dc.description.abstractMicrosporogenesis, chromosome number, meiotic behaviour and meiotic index were investigated in Dahlstedtia pinnata and D. pentaphylla, two legume species occurring largely in Brazil, in order to ascertain whether the pollen could limit fertilization events. Archesporial cells originate primary sporogenous and anther wall precursor cells, the tapetum is uniseriate, uninucleate and glandular. Tetrads are tetrahedric or decussate, and cytokinesis is of the simultaneous type. Mature pollen grains are tricolpate and bicellular. No abnormalities in microsporogenesis were found. In both species the chromosome number is n = 11, a number not reported previously. The base number for Dahlstedtia is also 11, because cytological observations include both species of Dahlstedtia. D. pentaphylla has a higher meiotic index and lower individual variation values, and it is considered meiotically stable. Its pollen grains do not limit fertilization. D. pinnata has a lower meiotic index, and the pollen is one of the factors which limit fertilization. Furthermore, D. pinnata has numerous adventitious shoots, which suggest that vegetative propagation is important in its reproductive process. (C) 2002 the Linnean Society of London, Botanical Journal of the Linnean Society, 2002, 138, 461-471.en
dc.description.affiliationUniv Estadual Campinas, Inst Biol, Dept Bot, BR-13083970 Campinas, SP, Brazil
dc.description.affiliationUniv Estadual Paulista, Ibilce, Dept Bot, BR-15054000 Sao Jose do Rio Preto, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Ibilce, Dept Bot, BR-15054000 Sao Jose do Rio Preto, SP, Brazil
dc.format.extent461-471
dc.identifierhttp://dx.doi.org/10.1046/j.1095-8339.2002.00031.x
dc.identifier.citationBotanical Journal of the Linnean Society. London: Academic Press Ltd Elsevier B.V. Ltd, v. 138, n. 4, p. 461-471, 2002.
dc.identifier.doi10.1046/j.1095-8339.2002.00031.x
dc.identifier.issn0024-4074
dc.identifier.urihttp://hdl.handle.net/11449/40032
dc.identifier.wosWOS:000174958400006
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofBotanical Journal of the Linnean Society
dc.relation.ispartofjcr3.124
dc.relation.ispartofsjr1,352
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectanther wallspt
dc.subjectchromosome numberpt
dc.subjectfertilization successpt
dc.subjectmeiotic abnormalitiespt
dc.subjectmeiotic indexpt
dc.subjectmicrosporogenesispt
dc.subjecttapetumpt
dc.titleDevelopment and cytology of pollen in Dahlstedtia Malme (Leguminosae : Papilionoideae)en
dc.typeArtigo
dcterms.licensehttp://olabout.wiley.com/WileyCDA/Section/id-406071.html
dcterms.rightsHolderElsevier B.V.
unesp.author.orcid0000-0002-8889-4955[2]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências Letras e Ciências Exatas, São José do Rio Pretopt

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Artigos - Zoologia e Botânica - IBILCE