Ross,
I think caling the polen grain wall the wall of the microspore is
leaving out much post microspore development. The microspore wall is
present after meiosis and cytokinesis. I would assign pollen grain wall
development, including protein injection, etc., to nicrogametophyte
development. So the pollen wall is new, and formed post meiosis.
again, my two coconuts worth
Walter J Mozgala
Profesor of Botany
Holyoke Community College
SEM Division
303 Homestead Ave
Holyoke, MA 01040
wmozgala at hcc.mass.edu
(413) 552-2470
