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DEVELOPMENT OF MALE REPRODUCTIVE STRUCTURES IN CAMPANULA ALLIARIIFOLIA (CAMPANULACEAE)
- Authors: Zhinkina N.A.1, Evdokimova E.E.1
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Affiliations:
- Komarov Botanical Institute RAS
- Issue: Vol 108, No 11 (2023)
- Pages: 992-1000
- Section: COMMUNICATIONS
- URL: https://ogarev-online.ru/0006-8136/article/view/233535
- DOI: https://doi.org/10.31857/S000681362311008X
- EDN: https://elibrary.ru/APOETT
- ID: 233535
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Abstract
A cytoembryological study of the formation of microsporangium wall and the development of pollen grains in Campanula alliariifolia Willd. was carried out. A significant similarity in the structure of male embryonic structures in this species with the other representatives of Campanulaceae was revealed, namely: simultaneous formation of tetrads of microspores, bicellular pollen grains with relatively large vegetative cell, cellular secretory tapetum, bilayered endothecium. Characteristic features of this species are as follows: the absence of placentoids which indicates its evolutionary advancement, since the placentoids are characteristic of the most primitive representatives of the family; long-term, in comparison with previously studied species of the family, preservation of the tapetum, namely up to the opening of the anther, in the form of a cord of deformed tapetal cells located in a row and tightly adjacent to each other; relatively late appearance of fibrous bands.
About the authors
N. A. Zhinkina
Komarov Botanical Institute RAS
Email: e.e.evdokimova@mail.ru
Russia, 197022, St. Petersburg,
Prof. Popov Str., 2
E. E. Evdokimova
Komarov Botanical Institute RAS
Author for correspondence.
Email: e.e.evdokimova@mail.ru
Russia, 197022, St. Petersburg,
Prof. Popov Str., 2
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