Embryological studies of Oxalis debilis Kunth

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, S., Galati, B.G.
Formato: JOUR
Materias:
Male sterility
Oxalis
Pollen abortion
Sexual reproduction anomalies
Oxalis debilis
Acceso en línea: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 todo:paper_03782697_v298_n8_p1567_Rosenfeldt
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spelling todo:paper_03782697_v298_n8_p1567_Rosenfeldt2023-10-03T15:32:11Z Embryological studies of Oxalis debilis Kunth Rosenfeldt, S. Galati, B.G. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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, S.
Galati, B.G.
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.
format JOUR
author Rosenfeldt, S.
Galati, B.G.
author_facet Rosenfeldt, S.
Galati, B.G.
author_sort Rosenfeldt, S.
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
url http://hdl.handle.net/20.500.12110/paper_03782697_v298_n8_p1567_Rosenfeldt
work_keys_str_mv AT rosenfeldts embryologicalstudiesofoxalisdebiliskunth
AT galatibg embryologicalstudiesofoxalisdebiliskunth
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