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作 者 ：王耀芝 陈超

期 刊 ：西北植物学报 1992年 4期

关键词：掌叶大黄；胚珠；胚囊；胼胝质；发育；

Keywords:rhubarb, ovule, embryo sac, callose.,

摘 要 ：

Abstract:Using Ehrlich‘ s hematoxylin whole stain and resin thin sections, the development of ovule and embryo sac in rhubarb was studied, the main results were as follows: 1 . The tetrad of megaspore is T-or linear shaped and the chalazal megaspore develops into

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