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Digitale Medien

Origin of sperm cell association in the “male germ unit” ofBrassica pollen (1989)

Charzynska, M. ; Murgia, M. ; Milanesi, C. ; [weitere]

Springer

Protoplasma 149 (1989), S. 1-4

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Details

ISSN: 1615-6102

Schlagwort(e): Brassica napus ; Cell division ; Male germ unit ; Pollen ; Sperm cells

Quelle: Springer Online Journal Archives 1860-2000

Thema: Biologie

Notizen: Summary The association of the two sperm cells inBrassica napus pollen following the generative cell division was investigated. The generative cell during division is located in the center of the pollen grain, within the vegetative cell. The space present between the two cells is slightly irregular as seen following standard glutaraldehyde fixation. After completion of mitosis vesicles appear in the equatorial plane, coalescing centripetally to form a cell plate which fuses with the membrane of the generative cell, dividing it in two sperm cells. They are isolated from the vegetative cell by the space between the two cell membranes and are separated from each other by a similar space resulting from the cell plate formed during cytokinesis.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01623975

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