Embryological study in Oziroë acaulis (Baker) Speta (Hyacinthaceae)

All the results of this paper constitute an original contribution because none of the species of Oziroë is embryologically known. The development of the anther wall in O. acaulis is of Monocotyledonous type. The tapemm is secretory and has binucleate cells. The microspore tetrads are isobilaterat an...

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Detalles Bibliográficos
Publicado: 2000
Materias:
Fortunatia
Megagametophyte
Pollen
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319449_v50_n2_p161_Strittmatter
http://hdl.handle.net/20.500.12110/paper_00319449_v50_n2_p161_Strittmatter
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00319449_v50_n2_p161_Strittmatter
record_format dspace
spelling paper:paper_00319449_v50_n2_p161_Strittmatter2023-06-08T14:59:45Z Embryological study in Oziroë acaulis (Baker) Speta (Hyacinthaceae) Fortunatia Megagametophyte Pollen All the results of this paper constitute an original contribution because none of the species of Oziroë is embryologically known. The development of the anther wall in O. acaulis is of Monocotyledonous type. The tapemm is secretory and has binucleate cells. The microspore tetrads are isobilaterat and decussate, and the pollen grains are 2-celled when shed. The stigma has three receptive zones with 1-celled papillae and the style is hollow. The ovule is anatropous, bitegmic and crassinucellate. The ovular primordium is bizonate; the inner integument is dermal and the outer one is subdermal in origin. Megaspore tetrads are T-shaped; the lowermost megaspore produces a Polygonum type of embryo sac. The endosperm is helobial. 2000 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319449_v50_n2_p161_Strittmatter http://hdl.handle.net/20.500.12110/paper_00319449_v50_n2_p161_Strittmatter
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Fortunatia
Megagametophyte
Pollen
spellingShingle Fortunatia
Megagametophyte
Pollen
Embryological study in Oziroë acaulis (Baker) Speta (Hyacinthaceae)
topic_facet Fortunatia
Megagametophyte
Pollen
description All the results of this paper constitute an original contribution because none of the species of Oziroë is embryologically known. The development of the anther wall in O. acaulis is of Monocotyledonous type. The tapemm is secretory and has binucleate cells. The microspore tetrads are isobilaterat and decussate, and the pollen grains are 2-celled when shed. The stigma has three receptive zones with 1-celled papillae and the style is hollow. The ovule is anatropous, bitegmic and crassinucellate. The ovular primordium is bizonate; the inner integument is dermal and the outer one is subdermal in origin. Megaspore tetrads are T-shaped; the lowermost megaspore produces a Polygonum type of embryo sac. The endosperm is helobial.
title Embryological study in Oziroë acaulis (Baker) Speta (Hyacinthaceae)
title_short Embryological study in Oziroë acaulis (Baker) Speta (Hyacinthaceae)
title_full Embryological study in Oziroë acaulis (Baker) Speta (Hyacinthaceae)
title_fullStr Embryological study in Oziroë acaulis (Baker) Speta (Hyacinthaceae)
title_full_unstemmed Embryological study in Oziroë acaulis (Baker) Speta (Hyacinthaceae)
title_sort embryological study in oziroë acaulis (baker) speta (hyacinthaceae)
publishDate 2000
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319449_v50_n2_p161_Strittmatter
http://hdl.handle.net/20.500.12110/paper_00319449_v50_n2_p161_Strittmatter
_version_ 1768543504152133632

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