Key words: annulus; costa pori; ectexine; endexine; exine; Gramineae; Pariana; Poaceae; pore. The archetypal aperture system in grass pollen is a single pore consisting of an ‘‘island’’ of ectoaperture exine, the oper-culum (Wodehouse, 1935), circumscribed by a raised and …
仅显示来自 bsapubs.onlinelibrary.wiley.com 的搜索结果The evolutionary history evid…
All grass species produce pollen that is simple, psilate, and spherical, with only …
Grass pollen surface orname…
We also correlated grass pollen surface ornamentation with explanatory …
The evolutionary history evident in grass pollen morphology
2025年1月9日 · All grass species produce pollen that is simple, psilate, and spherical, with only small differences in the surface patterning and thickness of the pollen exine, the shape and …
Grass pollen surface ornamentation is diverse across …
2023年9月27日 · We also correlated grass pollen surface ornamentation with explanatory variables, and we mapped morphotype occurrence onto the grass phylogeny in order to explore how pollen sculpture ornamentation varies …
Pollen-Stigma Interaction and Cross-Incompatibility in the Grasses …
Often, however, there is difficulty in obtaining fertilization because the pollen tube fails to reach the embryo sac. This article concerns recent research on pollen-stigma interaction in the …
- 作者: J. Heslop-Harrison
- Publish Year: 1982
Grain and annulus diameter as criteria for distinguishing pollen …
2007年9月1日 · Table indicates the classification of grass pollen grains into four categories, by applying a test consisting of looking successively at each value pair (grain diameter–annulus …
- 作者: Camille Joly, Laurent Barillé, Mathilde Barreau, Alban Mancheron, Lionel Visset
- Publish Year: 2007
Key words: annulus; costa pori; ectexine; endexine; exine; Gramineae; Pariana; Poaceae; pore. The archetypal aperture system in grass pollen is a single pore consisting of an "island" of …
When the single pore of each micro-spore is initiated, as a gap in the primexine, it too lies adjacent to the tapetum and remains tightly appressed there until pollen maturity. A sequence …
published New Phytologist study, this has led to grass pollen being severely underutilized in paleoecological and plant evolutionary research, despite being a significant component of …
Annulus-pore relationship in Gramineae (Poaceae) pollen: the pore ...
Pariana, a primitive bamboo, is the only genus in the Gramineae (Poaceae) to have pollen grains without an annulus as part of its single aperture (porate) system. In contrast, the markedly …
Annulus-pore relationship in Gramineae (Poaceae) …
2003年6月1日 · Poaceae pollen are generally stenopalynous monoporate grains with annulate and operculate pores, and distinguishing species by ornamentation using LM is impossible.
