Sentence examples for surface of the ovule from inspiring English sources

By 1 dpa, fiber initials bulge from the surface of the ovule.

The outside surface of the ovule cuticle is mainly smooth, but some papillae surrounding a putative stomatal pore are observable (figure 11 f: SEM).

The parameter r0 is an offset we introduced to account for the distance that the attractant has to diffuse on the surface of the ovule, where the diffusion coefficient may be different, before entering the thin film of liquid pollen-growth medium that coats the top of the solid agar matrix.

After the female gametophyte becomes cellular, archegonia (normally two) are initiated at the surface toward the micropylar end of the ovule.

Placenta, plural Placentas, orPlacentae, in botany, the surface of the carpel (highly modified leaf) to which the ovules (potential seeds) are attached.

The pollen in angiosperms is transferred to the surface of the megasporophyll, whereas in gymnosperms it is brought to the micropyle of the ovule itself.

Variations in form and position of the ovule are significant in plant classification: orthotropous ovules stand out straight into the cavity of the ovary; campylotropous ovules are at right angles to the funiculus; anatropous ovules are directed back toward the funiculus.

Detailed view of the ovule in Figure 2a.

When the pollen tube reaches the gate of the ovule (micropyle), it releases the sperm pair into an embryo sac (female gametophyte) enclosed in the ovule wall.

As ovules mature, the integuments grow rapidly around the ovule, and consequently a larger proportion of the ovule is composed of integument.

Ethylene biosynthesis could be up-regulated as part of the ovule developmental programme (i.e., ovule ageing) to precipitate the progress of ovule senescence.