Pollen development in Mimosa balansae
Light micriscopic and ultrastructural aspects of pollen development and exine formation are described in Mimosa balansae Mich. The most important results are: (i) The occurrence of a secretory tapetum, (ii) the persistence of the primary wall of pollen mother cell even after the callose disappearanc...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_00319449_v48_n4_p371_Caccavari |
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todo:paper_00319449_v48_n4_p371_Caccavari2023-10-03T14:44:35Z Pollen development in Mimosa balansae Caccavari, M.A. Galati, B. Mimosa Permanent tetrads Pollen development Ultrastructure Light micriscopic and ultrastructural aspects of pollen development and exine formation are described in Mimosa balansae Mich. The most important results are: (i) The occurrence of a secretory tapetum, (ii) the persistence of the primary wall of pollen mother cell even after the callose disappearance, (iii) the presence of cytoplasmic channels between neighbouring microspores until mature microspore tetrad stage, (iv) an early formation of granular pre-exine and consecutive granular deposition of diverse osmiophilic densities in relation with the "exine template" formation, (v) a granular "exine template" formation over the pre-exine with a shape replica of the future areolated sculpture of the exine, (vi) the consecutive occurrence of two primordial lamellae in relation with ectexine and endexine development and (vii) respectively, development of apertures with a thicker preexine and successive exine and intine onci formation. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00319449_v48_n4_p371_Caccavari |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Mimosa Permanent tetrads Pollen development Ultrastructure |
| spellingShingle |
Mimosa Permanent tetrads Pollen development Ultrastructure Caccavari, M.A. Galati, B. Pollen development in Mimosa balansae |
| topic_facet |
Mimosa Permanent tetrads Pollen development Ultrastructure |
| description |
Light micriscopic and ultrastructural aspects of pollen development and exine formation are described in Mimosa balansae Mich. The most important results are: (i) The occurrence of a secretory tapetum, (ii) the persistence of the primary wall of pollen mother cell even after the callose disappearance, (iii) the presence of cytoplasmic channels between neighbouring microspores until mature microspore tetrad stage, (iv) an early formation of granular pre-exine and consecutive granular deposition of diverse osmiophilic densities in relation with the "exine template" formation, (v) a granular "exine template" formation over the pre-exine with a shape replica of the future areolated sculpture of the exine, (vi) the consecutive occurrence of two primordial lamellae in relation with ectexine and endexine development and (vii) respectively, development of apertures with a thicker preexine and successive exine and intine onci formation. |
| format |
JOUR |
| author |
Caccavari, M.A. Galati, B. |
| author_facet |
Caccavari, M.A. Galati, B. |
| author_sort |
Caccavari, M.A. |
| title |
Pollen development in Mimosa balansae |
| title_short |
Pollen development in Mimosa balansae |
| title_full |
Pollen development in Mimosa balansae |
| title_fullStr |
Pollen development in Mimosa balansae |
| title_full_unstemmed |
Pollen development in Mimosa balansae |
| title_sort |
pollen development in mimosa balansae |
| url |
http://hdl.handle.net/20.500.12110/paper_00319449_v48_n4_p371_Caccavari |
| work_keys_str_mv |
AT caccavarima pollendevelopmentinmimosabalansae AT galatib pollendevelopmentinmimosabalansae |
| _version_ |
1782030129380196352 |