Sentences with nucellus
nu·cel·lus
N n - A nucellar dome has been formed in the massive nucellar cap and the integument has overgrown the nucellus and formed a wide-open micropyle.
- Such grains frequently had a portion of the pollen tube outside the nucellar tissue so that the grains were held at an angle some distance from the nucellus.
- Other barriers may also exist because xylem-mobile safranin failed to enter the ovary although the xylem passes around the nucellus and into the stylar tissue.
- In addition, the grains were observed to float in water with sacci uppermost, consistent with the suggestion that distally placed sacci serve to orientate the germinal furrow of the pollen grain towards the nucellus of an inverted ovule.