Ovule and seed development in Eucalyptus woodwardii were observed from anthesis to capsule maturity by bright-field, fluorescence, and scanning electron microscopy following self-, cross-, and ...

1. The ovule has a conspicuous nucellar beak and pollen chamber. 2. The sporogenous tissue is deep within the nucellus. 3. Differentiation of the mother cell has taken place by the first of May. 4.

Pollination could be a chaotic disaster. With hundreds of pollen grains growing long tubes to ovules to deliver their sperm to female gametes, how can a flower ensure that exactly two fertile sperm ...

Structure of a flower, consisting of a pistil (female part) in the center and stamen (male part) on each side. The pistil has ovules containing egg cells, and the stamen consists of pollen containing ...