Random deposition of callose along pollen tube wall and even the whole wall was observed.
Random deposition of callose along pollen tube wall and even the whole wall was observed.
花粉管中胼胝质沿管壁不规则沉积， 有的不形成胼胝质塞，或整个管壁被胼胝质所覆盖。
Random deposition of callose along pollen tube wall and even the whole wall was observed.
花粉管中胼胝质沿管壁不规则沉积， 有的不形成胼胝质塞，或整个管壁被胼胝质所覆盖。