The pollen viability may be affected by genetic factors such as abnormalities during microsporogenesis and climatic factors such as relative air humidity and air temperature that affects the pollen grain
physiology (Ferreira et al., 2007).
The species is monophilic, being pollinated by a species belonging to a hymenopteran genus Trigona and edible pollen grain
is the only reward offered to the pollinator.
It thus seems reasonable to suggest that differences in tassel morphology of the maize cultivars might influence pollen grain
Basic fuchsin is a DNA specific dye, staining the cytoplasm in red; malachite green stains in green the pollen grain
wall and Orange G is an enhancer.
Description: Pollen grain
, monosulcate, overall amb oval to subcircular or rounded quadrilateral.
The wall of fertile pollen grain
started development shortly after tetrad formation.
trifurca and reported complex patterns the changes in the directions and magnitudes of pollen grain
trajectories that were related to the surfaces obstructing airflow.
The result of analysis of variance detected significant differences for pollen grain
viability among the plants derived from the tetraploid B.
According to some researchers [17,31,34], cytomixis plays a major role in chromosomal diversity and speciation of taxa because it also leads to unreduced pollen grain
formation in a similar way followed by syncytes.
described fabricating porous micron-sized particles of silica using pollen grain
templates , which is a facile method for replicating the complex surface morphology of tree pollen grains
, in the case of silica productions complex colloidal materials with surface areas higher than 800 [m.sup.2] [g.sup.-1].