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dc.contributor.CRUESPUniversidade Estadual de Campinaspt_BR
dc.typeArtigo de periódicopt_BR
dc.titleStudies on the reproductive biology of Melastomataceae in "cerrado" vegetationpt_BR
dc.contributor.authorGoldenberg, Rpt_BR
dc.contributor.authorShepherd, GJpt_BR
unicamp.authorUNICAMP, IB, Dept Bot, BR-13083970 Campinas, SP, Brazilpt_BR
dc.subjectMelastomataceaept_BR
dc.subjectLeandrapt_BR
dc.subjectMiconiapt_BR
dc.subjectTibouchinapt_BR
dc.subjectbreeding systemspt_BR
dc.subjectapomixispt_BR
dc.subjectpollen fertilitypt_BR
dc.subject.wosBreeding Systemspt_BR
dc.subject.wosMemecylaceaept_BR
dc.subject.wosVenezuelapt_BR
dc.description.abstractControlled pollinations and observations of pollen tube growth, pollen fertility and cytological data were studied in 11 species of Melastomataceae growing in "cerrado" in SE Brazil. Seven species produced apomictic fruits with viable seeds. Four species were not apomictic, with two self-incompatible (gametophytic ST) and two self-compatible, one showing spontaneous self-pollination. The apomictic species had lower pollen fertility than sexual ones -although in some cases differences were not significant -showing that low pollen fertility may be a useful indicator of apomixis if analysed using careful sampling supplemented by emasculation experiments. The apomictic species also showed meiotic irregularities, probably related to hybridization, polyploidy and the cause of low pollen fertility. Apomixis in this group probably is more associated with taxonomy and phylogeny than habitat or habit, since 85% of the apomictic species reported in the literature belong to the tribe Miconieae and occur in a wide range of vegetation types and have diverse habits. This suggests the existence of very extensive apomictic complexes comparable to those reported in mainly temperate genera of Asteraceae and Rosacene.pt
dc.relation.ispartofPlant Systematics And Evolutionpt_BR
dc.relation.ispartofabbreviationPlant Syst. Evol.pt_BR
dc.publisher.cityViennapt_BR
dc.publisher.countryAustriapt_BR
dc.publisherSpringer-verlag Wienpt_BR
dc.date.issued1998pt_BR
dc.identifier.citationPlant Systematics And Evolution. Springer-verlag Wien, v. 211, n. 41671, n. 13, n. 29, 1998.pt_BR
dc.language.isoenpt_BR
dc.description.volume211pt_BR
dc.description.issuenumber41671pt_BR
dc.description.firstpage13pt_BR
dc.description.lastpage29pt_BR
dc.rightsfechadopt_BR
dc.rights.licensehttp://www.springer.com/open+access/authors+rights?SGWID=0-176704-12-683201-0pt_BR
dc.sourceWeb of Sciencept_BR
dc.identifier.issn0378-2697pt_BR
dc.identifier.wosidWOS:000074074400002pt_BR
dc.identifier.doi10.1007/BF00984909pt_BR
dc.date.available2014-12-02T16:25:05Z
dc.date.available2015-11-26T16:12:17Z-
dc.date.accessioned2014-12-02T16:25:05Z
dc.date.accessioned2015-11-26T16:12:17Z-
dc.description.provenanceMade available in DSpace on 2014-12-02T16:25:05Z (GMT). No. of bitstreams: 1 WOS000074074400002.pdf: 1372929 bytes, checksum: 61946aad303a0fed35b4cc7263f10c63 (MD5) Previous issue date: 1998en
dc.description.provenanceMade available in DSpace on 2015-11-26T16:12:17Z (GMT). No. of bitstreams: 2 WOS000074074400002.pdf: 1372929 bytes, checksum: 61946aad303a0fed35b4cc7263f10c63 (MD5) WOS000074074400002.pdf.txt: 45385 bytes, checksum: 81bbf5f9cd2d2da8ebabe38eceb837a6 (MD5) Previous issue date: 1998en
dc.identifier.urihttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/75238pt_BR
dc.identifier.urihttp://www.repositorio.unicamp.br/handle/REPOSIP/75238
dc.identifier.urihttp://repositorio.unicamp.br/jspui/handle/REPOSIP/75238-
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