The microsporogenesis and the development of male gametophyte in Paeonia lactiflora Pall. were investigated by light-microscopy. The main results are as follows:the anther is generally composed of four,occasionally five or six pollen sacs.The development of anther wall follows the basic type. The anther wall comprises 6～8 layer cells and the outer middle layer is persistent.The tapetum is glandular. The cytokinesis in the microspore mother cell belongs to simultaneous type and gives rise to tetrahedra...
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