РАЗВИТИЕ ПЫЛЬНИКА У
 
 PLATYCODON GRANDIFLORUS
 
 (CAMPANULACEAE)

Zhinkina, N. A.; Евдокимова, Е. Е.

doi:10.31857/s0006813620030102

Ботанический журнал

2020

DOI: 10.31857/s0006813620030102

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РАЗВИТИЕ ПЫЛЬНИКА У PLATYCODON GRANDIFLORUS (CAMPANULACEAE)

N. A. Zhinkina¹,

Е. Е. Евдокимова²

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DEVELOPMENT OF MALE REPRODUCTIVE STRUCTURES IN CAMPANULA ALLIARIIFOLIA (CAMPANULACEAE)

Zhinkina,

Evdokimova

2023

Botanicheskii Zhurnal

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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.

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DEVELOPMENT OF MALE REPRODUCTIVE STRUCTURES IN CAMPANULA ALLIARIIFOLIA (CAMPANULACEAE)

Zhinkina,

Evdokimova

2023

Botanicheskii Zhurnal

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Genesis of the generative structures Platycodon grandiflorus (family Сampanulaceae)

Шевченко¹

2021

Bûlletenʹ Gosudarstvennogo Nikitskogo botaničeskogo sada

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The article presents the research results of the genesis of the elements of the microsporangium wall, sporogenous tissue, microspores, megaspores, male and female gametophytes of the Platycodon grandiflorus . The types of formation of the structures mail generative sphere (dicotyledonous type of microsporangium wall formation, simultaneous type of the tetrad microspores development, 3-cells of the pollen grains with 6-th pores, Polygonum - type of the formation embryo sac) have been established. A high viability of pollen grains was established during pollination and possibility of obtaining complete seeds when growing this species in the conditions of the Southern Coast of the Crimea.

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РАЗВИТИЕ ПЫЛЬНИКА У PLATYCODON GRANDIFLORUS (CAMPANULACEAE)

Cited by 2 publications

References 0 publications

DEVELOPMENT OF MALE REPRODUCTIVE STRUCTURES IN <i>CAMPANULA ALLIARIIFOLIA</i> (CAMPANULACEAE)

DEVELOPMENT OF MALE REPRODUCTIVE STRUCTURES IN <i>CAMPANULA ALLIARIIFOLIA</i> (CAMPANULACEAE)

Genesis of the generative structures <i>Platycodon grandiflorus </i>(family Сampanulaceae)

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