Pollen development in Myosotis azorica and M. laxa (Boraginaceae)

The development of the microsporangium, microsporogenesis, and microgametogenesis of Myosotis azorica and M. laxa (Boraginaceae) was studied. The development of the anthers follows the Reduced type. The tapetum is of the secretory type and its cells are uninucleate. A tapetal membrane with Übisch bo...

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Detalles Bibliográficos
Autores principales: Strittmatter, L.I., Galati, B.G.
Formato: JOUR
Materias:
Male gametophyte
Microsporangium
p-particles
Übisch bodies
Ultrastructure
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00319449_v51_n1_p1_Strittmatter
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00319449_v51_n1_p1_Strittmatter
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spelling todo:paper_00319449_v51_n1_p1_Strittmatter2023-10-03T14:44:37Z Pollen development in Myosotis azorica and M. laxa (Boraginaceae) Strittmatter, L.I. Galati, B.G. Male gametophyte Microsporangium p-particles Übisch bodies Ultrastructure The development of the microsporangium, microsporogenesis, and microgametogenesis of Myosotis azorica and M. laxa (Boraginaceae) was studied. The development of the anthers follows the Reduced type. The tapetum is of the secretory type and its cells are uninucleate. A tapetal membrane with Übisch bodies is formed and persists until the opening of the anther. The microspore tetrads are tetrahedral. The pollen grain is 8-aperturate, 6-heterocolpate with 2 polar apertures and is shed at the 3-celled stage. In the mature pollen grain, numerous p-particles along with some mitochondria are observed in the areas next to the pores of the vegetative cell cytoplasm. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00319449_v51_n1_p1_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 Male gametophyte
Microsporangium
p-particles
Übisch bodies
Ultrastructure
spellingShingle Male gametophyte
Microsporangium
p-particles
Übisch bodies
Ultrastructure
Strittmatter, L.I.
Galati, B.G.
Pollen development in Myosotis azorica and M. laxa (Boraginaceae)
topic_facet Male gametophyte
Microsporangium
p-particles
Übisch bodies
Ultrastructure
description The development of the microsporangium, microsporogenesis, and microgametogenesis of Myosotis azorica and M. laxa (Boraginaceae) was studied. The development of the anthers follows the Reduced type. The tapetum is of the secretory type and its cells are uninucleate. A tapetal membrane with Übisch bodies is formed and persists until the opening of the anther. The microspore tetrads are tetrahedral. The pollen grain is 8-aperturate, 6-heterocolpate with 2 polar apertures and is shed at the 3-celled stage. In the mature pollen grain, numerous p-particles along with some mitochondria are observed in the areas next to the pores of the vegetative cell cytoplasm.
format JOUR
author Strittmatter, L.I.
Galati, B.G.
author_facet Strittmatter, L.I.
Galati, B.G.
author_sort Strittmatter, L.I.
title Pollen development in Myosotis azorica and M. laxa (Boraginaceae)
title_short Pollen development in Myosotis azorica and M. laxa (Boraginaceae)
title_full Pollen development in Myosotis azorica and M. laxa (Boraginaceae)
title_fullStr Pollen development in Myosotis azorica and M. laxa (Boraginaceae)
title_full_unstemmed Pollen development in Myosotis azorica and M. laxa (Boraginaceae)
title_sort pollen development in myosotis azorica and m. laxa (boraginaceae)
url http://hdl.handle.net/20.500.12110/paper_00319449_v51_n1_p1_Strittmatter
work_keys_str_mv AT strittmatterli pollendevelopmentinmyosotisazoricaandmlaxaboraginaceae
AT galatibg pollendevelopmentinmyosotisazoricaandmlaxaboraginaceae
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