关键词: 雷竹, 大孢子发生, 雌配子体, 结实率

Abstract:

Megasporogenesis and female gametophyte development of Phyllostachys violascens were studied by classical paraffin microtome techniques.The observed results are as followed:There is a simple ovary,which is unilocular and uniovulate,in one floret.The ovule is anatropous,bitegminous and crassinucellate.The megasporocyte undergoes meiotic division to form linear megaspore tetrad.The embryo sac is polygonum type,including one egg cell,two synergid cells with evident filiform apparatus,one central cell consisting of two polar nuclei,and numerous antipodal cells.The development of the most female gametophyte is normal,which is not the main reason of low seed setting rate of P.violascens.

Key words: Phyllostachys violascens, megasporogenesis, female gametophyte, seed setting rate