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作 者 ：朱家骏;王运煌;江洪;宋玉池

期 刊 ：武汉植物学研究 1987年 5卷 1期 页码：23-28

关键词：云南松；小孢子发生；雄配子体形成；

Keywords:Pinus yunnanensis, Microsporogenesis, Male gametophyte form,

摘 要 ：本文详述了云南松花粉母细胞的减数分裂、小孢子发生及雄配子体形成过程。在研究中发现:花粉母细胞在减数分裂中有明显的不同步现象;有少数发育畸形的小孢子;在减数分裂后期Ⅰ有染色单体桥及染色体片断出现;雄配子体发育过程中核分裂的方向异常;染色体数目2n=24与其它报道一致。

Abstract:The present paper deals with the process of meiotic divition of pollen mother cells, microsporogenesis and development of male gametophyte of Pinus yunnanensis Franch. It is observed that nonsynchronous phenomenon in meiotic division of PMCs, some development abnormal microspore, chromatid bridge and chromosome segment in anaphase Ⅰ and some cell nuclear division direction is abnormal in male gametophyte development. It is similar with another report that chromosome number is 2n=24 in Pinus yunnanensis Franch.

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