An Ultrastructural Study on Development and Degeneration of Unfertilized Citrus Ovules
The ultrastructural changes of the different parts of citrus ovules (Citrus sinensis (L.) Osbeck, cv. 'Navelate'), outer and inner integuments and nucellus during their development, and the onset of following degeneration were studied. Remarkable changes in integument cells during development and de...
| Main Authors: | , |
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| Format: | Objeto de conferencia |
| Language: | Inglés |
| Published: |
International Society of Citriculture
2024
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| Subjects: | |
| Online Access: | https://hdl.handle.net/20.500.11939/8780 |
| _version_ | 1855492558108491776 |
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| author | Tadeo, Francisco R. Primo-Millo, Eduardo |
| author_browse | Primo-Millo, Eduardo Tadeo, Francisco R. |
| author_facet | Tadeo, Francisco R. Primo-Millo, Eduardo |
| author_sort | Tadeo, Francisco R. |
| collection | ReDivia |
| description | The ultrastructural changes of the different parts of citrus ovules (Citrus sinensis (L.) Osbeck, cv. 'Navelate'), outer and inner integuments and nucellus during their development, and the onset of following degeneration were studied. Remarkable changes in integument cells during development and degeneration were not observed. Both outer and inner integument cells have a large central vacuole and many amyloplasts containing large starch granules. Nucellus cells are rich in cytoplasm. At anthesis, their cytoplasm contains mitochondria, small profiles of endoplasmic reticulum and abundant free ribosomes and amyloplasts with large starch granules. Fifteen days after anthesis, the onset of nucellus degeneration takes place. Inside nucellus normal cells and cells with symptoms of degeneration coexist. Degenerating cells are distinguished by shrinkage of cytoplasm, disappearance of central vacuole and mixing of the different cytoplasmic constituents. |
| format | Objeto de conferencia |
| id | ReDivia8780 |
| institution | Instituto Valenciano de Investigaciones Agrarias (IVIA) |
| language | Inglés |
| publishDate | 2024 |
| publishDateRange | 2024 |
| publishDateSort | 2024 |
| publisher | International Society of Citriculture |
| publisherStr | International Society of Citriculture |
| record_format | dspace |
| spelling | ReDivia87802025-04-25T14:51:14Z An Ultrastructural Study on Development and Degeneration of Unfertilized Citrus Ovules Tadeo, Francisco R. Primo-Millo, Eduardo Nucellus Nucellus degeneration F63 Plant physiology - Reproduction Oranges (not otherwise specified) Integument Citrus The ultrastructural changes of the different parts of citrus ovules (Citrus sinensis (L.) Osbeck, cv. 'Navelate'), outer and inner integuments and nucellus during their development, and the onset of following degeneration were studied. Remarkable changes in integument cells during development and degeneration were not observed. Both outer and inner integument cells have a large central vacuole and many amyloplasts containing large starch granules. Nucellus cells are rich in cytoplasm. At anthesis, their cytoplasm contains mitochondria, small profiles of endoplasmic reticulum and abundant free ribosomes and amyloplasts with large starch granules. Fifteen days after anthesis, the onset of nucellus degeneration takes place. Inside nucellus normal cells and cells with symptoms of degeneration coexist. Degenerating cells are distinguished by shrinkage of cytoplasm, disappearance of central vacuole and mixing of the different cytoplasmic constituents. 2024-01-30T12:49:50Z 2024-01-30T12:49:50Z 1988 conferenceObject Tadeo, F. R. & Primo-Millo, E. (1988). An Ultrastructural Study on Development and Degeneration of Unfertilized Citrus Ovules. Proceedings of the Sixth International Citrus Congress, 431-441. 3-8236-1136-4 https://hdl.handle.net/20.500.11939/8780 en 1988 Sixth International Citrus Congress Tel Aviv, Israel Attribution-NonCommercial-NoDerivatives 4.0 Internacional http://creativecommons.org/licenses/by-nc-nd/4.0/ openAccess International Society of Citriculture electronico |
| spellingShingle | Nucellus Nucellus degeneration F63 Plant physiology - Reproduction Oranges (not otherwise specified) Integument Citrus Tadeo, Francisco R. Primo-Millo, Eduardo An Ultrastructural Study on Development and Degeneration of Unfertilized Citrus Ovules |
| title | An Ultrastructural Study on Development and Degeneration of Unfertilized Citrus Ovules |
| title_full | An Ultrastructural Study on Development and Degeneration of Unfertilized Citrus Ovules |
| title_fullStr | An Ultrastructural Study on Development and Degeneration of Unfertilized Citrus Ovules |
| title_full_unstemmed | An Ultrastructural Study on Development and Degeneration of Unfertilized Citrus Ovules |
| title_short | An Ultrastructural Study on Development and Degeneration of Unfertilized Citrus Ovules |
| title_sort | ultrastructural study on development and degeneration of unfertilized citrus ovules |
| topic | Nucellus Nucellus degeneration F63 Plant physiology - Reproduction Oranges (not otherwise specified) Integument Citrus |
| url | https://hdl.handle.net/20.500.11939/8780 |
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