Embryological studies in Lotus glaber (Fabaceae)

The development of the female gametophyte and the pollen grain, the ultrastructure of the mature megagametophyte and the endothelial cells in Lotus glaber were examined. The anther wall development follows the dicotyledonous type. The tapetum is secretory, the microspore tetrads are tetrahedral and...

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Autores principales: Galati, B.G., Rosenfeldt, S., Tourn, G.M.
Formato: JOUR
Materias:
Embryology
Endothelium
Lotus
Megagametophyte
Ultrastructure
Fabaceae
Lotus glaber
Polygonum
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00033847_v43_n2_p97_Galati
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00033847_v43_n2_p97_Galati
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spelling todo:paper_00033847_v43_n2_p97_Galati2023-10-03T13:56:17Z Embryological studies in Lotus glaber (Fabaceae) Galati, B.G. Rosenfeldt, S. Tourn, G.M. Embryology Endothelium Lotus Megagametophyte Ultrastructure Fabaceae Lotus glaber Polygonum The development of the female gametophyte and the pollen grain, the ultrastructure of the mature megagametophyte and the endothelial cells in Lotus glaber were examined. The anther wall development follows the dicotyledonous type. The tapetum is secretory, the microspore tetrads are tetrahedral and pollen grains are shed at a bicellular stage. The mature ovule is anatropous, crassinucellar and bitegmic; integuments form a zig-zag micropyle. A T-shaped megaspore tetrad is formed and the lowest megaspore is functional and produces a 7-celled embryo-sac corresponding to the Polygonum type. The synergids show ultrastructural differences, involving dictyosomes and ERr; these differences suggest a functional differentiation, probably related to the reception of the pollen tube. © Finnish Zoological and Botanical Publishing Board 2006. Fil:Galati, B.G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Rosenfeldt, S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00033847_v43_n2_p97_Galati
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Embryology
Endothelium
Lotus
Megagametophyte
Ultrastructure
Fabaceae
Lotus glaber
Polygonum
spellingShingle Embryology
Endothelium
Lotus
Megagametophyte
Ultrastructure
Fabaceae
Lotus glaber
Polygonum
Galati, B.G.
Rosenfeldt, S.
Tourn, G.M.
Embryological studies in Lotus glaber (Fabaceae)
topic_facet Embryology
Endothelium
Lotus
Megagametophyte
Ultrastructure
Fabaceae
Lotus glaber
Polygonum
description The development of the female gametophyte and the pollen grain, the ultrastructure of the mature megagametophyte and the endothelial cells in Lotus glaber were examined. The anther wall development follows the dicotyledonous type. The tapetum is secretory, the microspore tetrads are tetrahedral and pollen grains are shed at a bicellular stage. The mature ovule is anatropous, crassinucellar and bitegmic; integuments form a zig-zag micropyle. A T-shaped megaspore tetrad is formed and the lowest megaspore is functional and produces a 7-celled embryo-sac corresponding to the Polygonum type. The synergids show ultrastructural differences, involving dictyosomes and ERr; these differences suggest a functional differentiation, probably related to the reception of the pollen tube. © Finnish Zoological and Botanical Publishing Board 2006.
format JOUR
author Galati, B.G.
Rosenfeldt, S.
Tourn, G.M.
author_facet Galati, B.G.
Rosenfeldt, S.
Tourn, G.M.
author_sort Galati, B.G.
title Embryological studies in Lotus glaber (Fabaceae)
title_short Embryological studies in Lotus glaber (Fabaceae)
title_full Embryological studies in Lotus glaber (Fabaceae)
title_fullStr Embryological studies in Lotus glaber (Fabaceae)
title_full_unstemmed Embryological studies in Lotus glaber (Fabaceae)
title_sort embryological studies in lotus glaber (fabaceae)
url http://hdl.handle.net/20.500.12110/paper_00033847_v43_n2_p97_Galati
work_keys_str_mv AT galatibg embryologicalstudiesinlotusglaberfabaceae
AT rosenfeldts embryologicalstudiesinlotusglaberfabaceae
AT tourngm embryologicalstudiesinlotusglaberfabaceae
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