Maturidade fisiológica das sementes do ipê amarelo, Tabebuia chrysotricha (Mart. Ex DC.) Standl

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dc.contributor.authorFonseca, Fernanda Lopes [UNESP]
dc.contributor.authorMenegario, Cristiane [UNESP]
dc.contributor.authorMori, Edson Seizo [UNESP]
dc.contributor.authorNakagawa, João [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:21:45Z
dc.date.available2014-05-27T11:21:45Z
dc.date.issued2005-12-01
dc.description.abstractIpê amarelo Tabebuia chrysotricha (Mart. Ex DC.) Standl. is a native forest species that presents heavy and durable wood: it is common to be used for urban arborization. The species is latte secondary and heliophyta. Occurs from Espirito Santo State until Santa Catarina in the Pluvial Atlantic Forest (Mata Atlântica). The seedling production is hard because their seeds have short longevity after dispersion, and so due to the difficulty to harvest winged seeds that are quickly dispersed by the wind. The present study was carried out to evaluate the physiological maturity of Ipê Amarelo seeds, to establish the best moment to harvest them. The study was to accompany the maturation of 100 fruits in just beginning development, from eleven different trees. Morphological characteristic measures were made weekly, with fruits still on trees, starting from the second week development when fruits presented the following averages: 6.3 cm length, 0.71 cm thickness, and 0.82 cm width. From the sixth week of fruit development we harvest them to proceed the germination test, water content rate, and electric conductivity test. The germination has begun by the seventh week development with 28% of germinated seedlings. The highest germination rate happened by the eighth week development, with 74.5% of germinated seedlings and on the ninth week the rate decrease to 65.5%, when the seeds were already in dispersion. Through the electric conductivity test the highest value obtained was 378.06 μS.g -1.cm -1 on the seventh week development and the lowest one was 183.28 μpS.g -1.cm -1 on eighth week. These results support those obtained in the germination test, because as higher is the electric conductivity of seeds, as higher is their deterioration level. Finally, the study allows concluding that the physiological maturation of ipê amarelo seeds has occurred before dispersion close to the eighth week development when fruits presented the following averages: 22.2 cm length, 1.37 cm width, and 1.05 cm thickness; water content rate was 61.8% and electric conductivity was 183.28 μS.g -1.cm -1. In that moment, the fruits presented greened brown coloration and started to show fissures.en
dc.description.affiliationCurso de Engenharia Florestal da UNESP Universidade Estadual Paulista Fazenda Experimental Lageado, Caixa Postal, 237, Botucatu, SP - 18603-970
dc.description.affiliationCurso de Engenharia Florestal da UNESP Universidade Estadual Paulista Fazenda Experimental Lageado, Caixa Postal, 237, Botucatu, SP -18603-970
dc.description.affiliationUNESP Universidade Estadual Paulista Fazenda Experimental Lageado, Caixa Postal, 237, Botucatu, SP - 18603-970
dc.description.affiliationUnespCurso de Engenharia Florestal da UNESP Universidade Estadual Paulista Fazenda Experimental Lageado, Caixa Postal, 237, Botucatu, SP - 18603-970
dc.description.affiliationUnespCurso de Engenharia Florestal da UNESP Universidade Estadual Paulista Fazenda Experimental Lageado, Caixa Postal, 237, Botucatu, SP -18603-970
dc.description.affiliationUnespUNESP Universidade Estadual Paulista Fazenda Experimental Lageado, Caixa Postal, 237, Botucatu, SP - 18603-970
dc.format.extent136-141
dc.identifierhttp://www.ipef.br/publicacoes/scientia/nr69/cap12.pdf
dc.identifier.citationScientia Forestalis/Forest Sciences, n. 69, p. 136-141, 2005.
dc.identifier.file2-s2.0-33645699362.pdf
dc.identifier.issn1413-9324
dc.identifier.lattes4724674295725958
dc.identifier.scopus2-s2.0-33645699362
dc.identifier.urihttp://hdl.handle.net/11449/68658
dc.language.isopor
dc.relation.ispartofScientia Forestalis/Forest Sciences
dc.relation.ispartofjcr0.500
dc.relation.ispartofsjr0,495
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectIpê amarelo
dc.subjectPhysiological maturity
dc.subjectSeed germination
dc.subjectTabebuia chrysotricha
dc.subjectAmarelo
dc.subjectBiodiversity
dc.subjectDispersions
dc.subjectElectric conductivity
dc.subjectForestry
dc.subjectFruits
dc.subjectHarvesting
dc.subjectMorphology
dc.subjectPhysiology
dc.subjectSeed
dc.subjectAnatomy
dc.subjectForests
dc.subjectSeeds
dc.titleMaturidade fisiológica das sementes do ipê amarelo, Tabebuia chrysotricha (Mart. Ex DC.) Standlpt
dc.title.alternativePhysiological maturity of ipê amarelo seeds, Tabebuia chrysotricha (Mart. Ex DC.) Standlen
dc.typeArtigo
unesp.author.lattes4724674295725958
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências Agronômicas, Botucatupt

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Artigos - Ciência Florestal - FCA