dc.contributorUniversidade Estadual Paulista (Unesp)
dc.contributorUniv Amsterdam
dc.date.accessioned2014-02-26T17:28:37Z
dc.date.accessioned2014-05-20T13:56:36Z
dc.date.accessioned2022-10-05T14:37:27Z
dc.date.available2014-02-26T17:28:37Z
dc.date.available2014-05-20T13:56:36Z
dc.date.available2022-10-05T14:37:27Z
dc.date.created2014-02-26T17:28:37Z
dc.date.created2014-05-20T13:56:36Z
dc.date.issued2007-01-01
dc.identifierFlora. Jena: Elsevier Gmbh, Urban & Fischer Verlag, v. 202, n. 2, p. 148-160, 2007.
dc.identifier0367-2530
dc.identifierhttp://hdl.handle.net/11449/20236
dc.identifier10.1016/j.flora.2006.05.003
dc.identifierWOS:000244958000008
dc.identifier2454528048086769
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/3894179
dc.description.abstractAnther development, micro sporogenesis and microgametogenesis in several species of Heliconia were investigated as part of a complementary embryological study of the Heliconiaceae. All studied Heliconia species present bithecate and tetrasporangiate anthers with fertile pollen grains; only H. rivularis, a natural hybrid, presented sterile pollen grains of variable size and no content. The anther wall has an uniseriate epidermis and endothecium, the latter with helicoidal thickenings, although some cells of the middle layers also showed thickenings; the biseriate tapetum is of amoeboid non-syncytial type, since the tapetum cells did not fuse together forming a true plasmodium. The microsporogenesis is successive leading to isobilateral tetrads. The inaperturate pollen grains had a very reduced exine consisting of a thin, more or less continuous layer with small spines upon; the pollen grain shape is variable among the species, all of them presenting heteropolar pollen, except H. angusta with isopolar ones. Most of these characteristics were shared with other studied Zingiberales, although more studies need to be done. (c) 2006 Elsevier GmbH. All rights reserved.
dc.languageeng
dc.publisherElsevier B.V.
dc.relationFlora
dc.relation1.365
dc.relation0,570
dc.rightsAcesso restrito
dc.sourceWeb of Science
dc.subjectamoeboid non-syncytial tapetum
dc.subjectHeliconia
dc.subjectmicrogametogenesis
dc.subjectmicrosporogenesis
dc.subjectpollen grain
dc.subjectzingiberales
dc.titleAnther development, microsporogenesis and microgametogenesis in Heliconia (Heliconiaceae, Zingiberales)
dc.typeArtigo


Este ítem pertenece a la siguiente institución