Effective Pollination Period and Nature of Pollen-collecting Apparatus in the Gymnosperm, Larix leptolepis

Abstract

In controlled environment, the effective pollination period in Larix leptolepis is characterized by its brevity, lasting for less than 1 d. It is associated with the opening of the papillae of the pollen collecting apparatus which possess surface esterase activity, a condition that has its parallel in the surface pellicle of angiosperm stigmas.