Lily (Lilium) – Development of the Male Gametophyte (= pollen grain)
This information is additional information that will help more with lecture content than lab 😉
This is a section through the sporogenous (spore producing) tissue within the anther:
ET below!!!!
Actually this is a tetrad of microspores:
This is a microspore. It will undergo a cell division to give rise to a 2-celled male gametophyte (= pollen grain):
Below is the male gametophyte (=pollen grain)…talk about reduction…only two cells!!!! The generative cell will divide to give rise to two sperm nuclei.
Below you can see a germinating pollen grain. You can see the long pollen tube. The tube nucleus at the end of the tube directs the growth of the tube:
Development of the Female Gametophyte in Polygonum