10 LIBROS DEL POLACO RELACIONADOS CON «MEGASPORA»
Descubre el uso de
megaspora en la siguiente selección bibliográfica. Libros relacionados con
megaspora y pequeños extractos de los mismos para contextualizar su uso en la literatura.
1
Plants of British Columbia: Scientific and Common Names of ...
Aspicilia verrucosa (Ach.) Körker = Megaspora verracosa [MEGAVEU] Hymenelia Kremp. [HYMENELS] Hymenelia epolotica (Ach.) Lutzoni [HYMEEPU] SY: Hymenelia prevostii (Duby) Kremp. SY: lonaspis epulotica (Ach.) Blomb. & Forssell ...
Hong Qian, K. Klinka, 1998
2
Embryology of Angiosperms - Strona 648
A Cytokinesis I and II; one megaspore functions – Aa chalazal megaspore, triphasic, bipolar; Ab micropylar megaspore, biphasic, unipolar. B Cytokinesis I only; one dyad cell functions – Ba chalazal dyad cell, megaspore nuclei biphasic, ...
3
Stratigraphic Distribution of Species of the Megaspore ... - Wydanie 743
Taxonomy, stratigraphic ranges, and facies significance of Minerisporites megaspores.
Augustus K. Armstrong, Robert H. Tschudy, William Albert Oliver, 1975
4
Comparative Embryology of Angiosperms - Tomy 1-2 - Strona 31
embryo sac, the callose appears first in the chalazal region of megaspore mother cell, spreads over its entire surface, and isolates it from the circumjacent maternal tissue. Then the callose is retained only around the micropylar dyad, or around ...
Brij M. Johri, Kunda B. Ambegaokar, Prem S. Srivastava, 2013
5
Plant Systematics - Strona 99
Each megaspore develops into a female gametophyte that bears only archegonia; a microspore develops into a male gametophyte, bearing only antheridia. Although heterospory was prerequisite to seed evolution, there are fossil plants that ...
6
Orchid Biology: Reviews and Perspectives, VII - Strona 52
starch grains present in Calypso bulbosa suggests that the functional megaspore has more organelles within its cytoplasm. In Phaius tankervilleae, a set of randomly oriented microtubules can be found within the cytoplasm of the functional ...
J. Arditti, Alec Pridgeon, 2013
7
Plant Cell Biology: Structure and Function
Introduction: In female reproduction, megaspore mother cells undergo meiosis to give rise to four haploid cells. Only one survives as a functional megaspore. Whereas many pollen grains develop in each anther (Plates 54, 56), megaspores ...
Brian E. S. Gunning, Martin W. Steer, 1996
8
Conifer Reproductive Biology - Strona 61
Claire G. Williams. 4.4 From Megaspore and Monospory to Haploid Female Gametophyte 61 Box 4.1 Mosaicism in the female gametophyte Rare exceptions to monospory have been reported for several taxa. In roughly 1% of Pinus sylvestris ...
9
Advanced Biology - Strona 292
Fact of life A single birch catkin can contain five and a half million pollen grains. Stigma Ovule Ovary wall Ovary cavity Nucellus (parenchyma. tissue) Integuments J Diploid megaspore mother cell Embryo sac Micropyle Placenta Funicle Figure ...
10
Current Trends in the Embryology of Angiosperms - Strona 69
Conversely, in some species, multiple megaspore nuclei form the megagametophyte. The pattern of megaspore survival is typically consistent among certain taxonomic groups, but there are also exceptional cases where the pattern is ...
Sant Saran Bhojwani, Woong-Young Soh, 2013
