A scanning electron microscopy study of the seed and post-seminal development in Angelonia salicariifolia Bonpl. (Scrophulariaceae)

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorMoro, F. V.
dc.creatorPinto, ACR
dc.creatorDos Santos, J. M.
dc.creatorDamiao, C. F.
dc.date2014-05-20T13:13:03Z
dc.date2016-10-25T16:33:40Z
dc.date2014-05-20T13:13:03Z
dc.date2016-10-25T16:33:40Z
dc.date2001-09-01
dc.date.accessioned2017-04-05T19:20:00Z
dc.date.available2017-04-05T19:20:00Z
dc.identifierAnnals of Botany. London: Academic Press Ltd, v. 88, n. 3, p. 499-506, 2001.
dc.identifier0305-7364
dc.identifierhttp://hdl.handle.net/11449/964
dc.identifierhttp://acervodigital.unesp.br/handle/11449/964
dc.identifier10.1006/anbo.2001.1473
dc.identifierWOS:000170614300017
dc.identifierhttp://dx.doi.org/10.1006/anbo.2001.1473
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/851051
dc.descriptionThe external morphology of seeds and post-germination developmental stages of Angelonia salicariifolia Bonpl. (Scrophulariaceae) were investigated using scanning electron microscopy. Some structural features of the seed exotesta and seedling in Angelonia are presented for the first time and are of potential taxonomic value for this neotropical genus. The seeds are very small (0.9-1.7 mm long and 0.5-0.9 mm wide), ovate, with a reticulate-crested exotesta, reticules arranged uniformly in longitudinal rows, with a high density of microcilia-like projections on the cell wall of the reticule base and on the edge of the crests. The hilum is located beside the micropyle at the narrow end of the seed. Germination is epigeal. During germination the radicle develops, followed by elongation of the hypocotyl and primary root. At this stage dense root hairs develop on the lower part of the hypocotyl. The apical bud-located between the cotyledons-begins to develop after the cotyledons have unfolded. The cotyledons are equal in size, sessile and ovate. The seedlings have two types of trichomes, one characteristic of the cotyledons and first pair of leaves (glandular, sessile, four-celled head with quadrangular shape) and the other characteristic of the hypocotyl and epicotyl (stalked, erect, elongate and three-celled with dome-shaped unicellular head). (C) 2001 Annals of Botany Company.
dc.languageeng
dc.publisherAcademic Press Ltd
dc.relationAnnals of Botany
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectseed morphology
dc.subjectexotesta-ornamentation
dc.subjectmicromorphology
dc.subjectpost-seminal stages
dc.subjectseedling
dc.subjecttrichomes
dc.subjectSEM
dc.subjectAngelonia salicariifolia Bonpl.
dc.subjectScrophulariaceae
dc.titleA scanning electron microscopy study of the seed and post-seminal development in Angelonia salicariifolia Bonpl. (Scrophulariaceae)
dc.typeOtro


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