pollen grain


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pollen grain

n.
A microspore of a seed plant, containing a partially developed male gametophyte.

pol′len grain`


n.
a single granule of pollen.
[1825–35]
References in periodicals archive ?
trifurca and reported complex patterns the changes in the directions and magnitudes of pollen grain trajectories that were related to the surfaces obstructing airflow.
Effect of different dactylifera males and their whorl pollen grain on fruit set, fruit drop and fruit characteristics of Dhakki date palm.
During instruction, participants used a Novint Falcon haptic device (see Figure 1), headphones, Pollen Grain simulation, and a laptop computer.
The pollen grain exine and shape were visualized under light microscope Nicon Eclipse E600.
The male gametophyte equals the mature pollen grain that arises in the anther and consists of only three cells (i.
The female reproductive tissues in a bloom can recognize genetic factors signaling that a pollen grain is too closely related.
The microscope captures pollen images on a microscope slide, identifies distinctive visual features, and then classifies the pollen grain.
Cereal-type pollen of the Hordeum and Avena-Triticum groups are distinguished from wild grasses primarily on the basis of mean pollen grain and annulus diameters (cereal pollen grains being larger than those of wild grass species), but also the surface sculpturing of the pollen grain and the protrudance of the annulus.
Pollen grain germination was chosen as a model system, and the goal was to identify nutrient molecules that would stimulate germination of Gladiolus pollen.
To measure how much pollen flows a certain distance, the modeling technology takes into account the distance, wind speed, size of the pollen grain and the turbulence of the air.
The effect of Date palm pollen grain extract on pollen tube morphology is present in the table 3, table 4 shows Chi-Square Test to determine significant difference between phenotypic groups of pollen tubes and treatments, percentage of wildtype in the treatments is displayed in figure 1, images for five phenotype groups, balloon tip, swollen, thin, wavy, and wildtype are displayed in Figures 2-6.