Pollen-pollen and pollen-style interaction during pollen tube
growth in Erythronium grandiflorum (Liliaceae).
Actin, in this case a kind of scaffold-builder needed to form root hairs and pollen tubes
, forms filamentous polymers and is important for many cellular processes in species ranging from yeast to man.
The sum of all pollen tube
areas in the subtracted image was divided by the number of pollen grains from the original thresholded image to obtain the average pollen tube
area per pollen grain.
Studies on the pollen tube
growth in six species of Hibiscus and their crosses in vivo.
Fertility and pollen tube
growth in polyploid melons (Cucumis melo L.
Pollen grains were considered germinated when the length of pollen tubes
exceeded grain diameter.
Self-pollination at bud stage aims to enable self-fertilization before the glycoproteins reach levels that prevent the development of the pollen tube
(ROBERTS et al.
The pollen grain was considered germinated when its pollen tube
diameter was equal to or larger than the pollen itself (Chagas et al.
The role of Ca, as an essential nutrient, required for pollen tube
growth has been appreciated for many years.
Sucrose has a universal role in Ephedra of also providing a nutrient source for pollen germination and pollen tube
growth, regardless of whether the species is insect- or wind-pollinated.
Among their topics are the regulation of cell wall formation by membrane traffic, actin filament dynamics and their role in plant cell expansion, rho of plant signaling and the cytoskeleton in pollen tube
growth, phosphoinositide signaling in root hair tip growth, and the transcriptional regulation of the biosynthesis of cell wall components during xylem differentiation.
Recently pollen physiology especially germination and viability has received considerable attention for its application in plant breeding, conservation, adaptation and understanding of physiological behavior of fertilizing pollen grains, there are several reports on pollen germination, viability and tube length from different taxa [33,22,42,2314], but a little research concentrates on pollen tube
morphology which is important also to complete fertilization successfully.