Contoh cotyledon

• In four instances, the testa was removed from one end of the seed and the fleshy cotyledons eaten from the centre.

• Although cell size in the cotyledons was not significantly lower in the spaceflight material than in the ground control, the cotyledons contained substantially fewer cells.

• During the period between radicle emergence and hook formation, relations between cotyledon length and the time from visible germination were linear.

• Solubility of axis cell walls differed from solubility of cotyledon cell walls.

• Removal of the cotyledons strongly diminished enzymatic activity in the embryonic axis.

• There is a concomitant increase in protein reserves which progresses in the same wave-like pattern outward from the cotyledon.

• A seedling was considered fully established when two leaves appeared in addition to the green cotyledons.

• Seedlings with emerged cotyledons were monitored and removed each time from the pots.

• In cotyledons, methyl esterification ranged from 25 to 40 mole% and was 31 mole% after desiccation.

• To facilitate equilibration, seed cotyledons were chopped into c. 1 mm3 pieces.

• Prior to acquisition of desiccation tolerance, seeds produced seedlings with either shortened radicle tips, unexpanded hypocotyls or folded cotyledons.

• The seeds are flattened and seedlings are phaneroepigeal with leafy cotyledons.

• Diaspores are gravity dispersed and the seed coat rapidly decays, exposing cotyledons to the immediate environment prior to germination.

• Rather, a stimulus released from the cotyledon is more likely to induce the major cell wall degrading enzyme, endo- mannanase, within the endosperm itself.

• Then embryos were isolated from the endosperm and pericarp by gently pressing the seed at the cotyledon end.