苯胺蓝染色花粉能够显示花粉什么指标：花粉内含物？活力？核？与 Alexander,DAPI,FDA染色花粉等有什么区别

Aniline blue stains callose, which is a major chemical component of the pollen tube cell wall. That makes it a good dye to visualize pollen tube growing in vivo.