连翘绒毡层发育中的内质网活动

超微结构研究表明，内质网在连翘（Ｆｏｒｓｙｔｈｉａｓｕｓｐｅｎｓａ（Ｔｈｕｎｂ．）Ｖａｈｌ）绒毡层发育中十分活跃，参与了许多功能的实现：１．在小抱子母细胞减数分裂时期产生前乌氏体；２．分布在前质体边缘，参与了前质体向造油体的转化；３．参与了抱粉素物质的分泌；４．粗面内质网的槽库曾两度膨大，并分割、包围细胞质，形成球形体和内质网兜（ＥＲｐｏｃｋｅｔｓ），参与了绒毡层细胞壁的加厚和外壁蛋白的分泌。

ACTIVITY OF ENDOPLASMIC RETICULUM DURING THETAPETUM DEVELOPMENT IN FORSYTHIA SUSPENSA

With electron microscopy, the authors have observed the ER activities during the tapetum development in Forsythia suspensa (Thunb. ) Vahl as following: 1. It produces pro-Ubisch babies at the meiotic stage of microspore mother cell, 2. It surrounds the proplastidand partakes the activity of lipid accumulation inside the plastids; 3. It secrets sporopolleninand 4. The rough ER in flats twice, surrounds and seperates the cytoplasm apart. formingthe ER pocket and spherical bodies. which contribute to the thickening of tapetal cell wallsand the secretion of exine protein.