Embryological studies of Oxalis debilis Kunth

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The study of pollen and female gametophyte development of Oxalis debilis was carried out to elucidate the reasons for the absence of seed production in this species. The formation of an incomplete callosic wall separating the microspores of the tetrad was observed; therefore, cytoplasm connections w...

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Autores principales:	Rosenfeldt, Sonia, Galati, Beatriz Gloria
Publicado:	2012
Materias:	Male sterility Oxalis Pollen abortion Sexual reproduction anomalies Oxalis debilis
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03782697_v298_n8_p1567_Rosenfeldt http://hdl.handle.net/20.500.12110/paper_03782697_v298_n8_p1567_Rosenfeldt
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_03782697_v298_n8_p1567_Rosenfeldt
record_format	dspace
spelling	paper:paper_03782697_v298_n8_p1567_Rosenfeldt2023-06-08T15:39:35Z Embryological studies of Oxalis debilis Kunth Rosenfeldt, Sonia Galati, Beatriz Gloria Male sterility Oxalis Pollen abortion Sexual reproduction anomalies Oxalis Oxalis debilis The study of pollen and female gametophyte development of Oxalis debilis was carried out to elucidate the reasons for the absence of seed production in this species. The formation of an incomplete callosic wall separating the microspores of the tetrad was observed; therefore, cytoplasm connections were present between the microspores. Microspores of different sizes and with different grades of vacuolation were observed in the mature anther. Only few microspores divide mitotically and form the generative and vegetative cell. The cytoplasm of the vegetative cell may accumulate different substances in reserve. Pollen grains are 8-12 colpate, and the morphology and electron density of the exine varies. Because flowers in full anthesis have all ovules at the megasporocyte stage with the nucellar epidermis intact, fecundation could not occur. The production of only a few viable pollen grains and the absence of successful megagametophyte development prevent fertilization and account for the absence of fruits and seeds formation. © 2012 Springer-Verlag. Fil:Rosenfeldt, S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Galati, B.G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2012 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03782697_v298_n8_p1567_Rosenfeldt http://hdl.handle.net/20.500.12110/paper_03782697_v298_n8_p1567_Rosenfeldt
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 sterility Oxalis Pollen abortion Sexual reproduction anomalies Oxalis Oxalis debilis
spellingShingle	Male sterility Oxalis Pollen abortion Sexual reproduction anomalies Oxalis Oxalis debilis Rosenfeldt, Sonia Galati, Beatriz Gloria Embryological studies of Oxalis debilis Kunth
topic_facet	Male sterility Oxalis Pollen abortion Sexual reproduction anomalies Oxalis Oxalis debilis
description	The study of pollen and female gametophyte development of Oxalis debilis was carried out to elucidate the reasons for the absence of seed production in this species. The formation of an incomplete callosic wall separating the microspores of the tetrad was observed; therefore, cytoplasm connections were present between the microspores. Microspores of different sizes and with different grades of vacuolation were observed in the mature anther. Only few microspores divide mitotically and form the generative and vegetative cell. The cytoplasm of the vegetative cell may accumulate different substances in reserve. Pollen grains are 8-12 colpate, and the morphology and electron density of the exine varies. Because flowers in full anthesis have all ovules at the megasporocyte stage with the nucellar epidermis intact, fecundation could not occur. The production of only a few viable pollen grains and the absence of successful megagametophyte development prevent fertilization and account for the absence of fruits and seeds formation. © 2012 Springer-Verlag.
author	Rosenfeldt, Sonia Galati, Beatriz Gloria
author_facet	Rosenfeldt, Sonia Galati, Beatriz Gloria
author_sort	Rosenfeldt, Sonia
title	Embryological studies of Oxalis debilis Kunth
title_short	Embryological studies of Oxalis debilis Kunth
title_full	Embryological studies of Oxalis debilis Kunth
title_fullStr	Embryological studies of Oxalis debilis Kunth
title_full_unstemmed	Embryological studies of Oxalis debilis Kunth
title_sort	embryological studies of oxalis debilis kunth
publishDate	2012
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03782697_v298_n8_p1567_Rosenfeldt http://hdl.handle.net/20.500.12110/paper_03782697_v298_n8_p1567_Rosenfeldt
work_keys_str_mv	AT rosenfeldtsonia embryologicalstudiesofoxalisdebiliskunth AT galatibeatrizgloria embryologicalstudiesofoxalisdebiliskunth
_version_	1768544228379459584

Embryological studies of Oxalis debilis Kunth

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