西瓜绒毡层和花粉发育的进一步观察  

FURTHER OBSERVATION ON TAPETUM AND POLLEN DEVELOPMENT IN WATERMELON

作　　者：刘林[1] 张恒悦[2] 范树国[1] 叶秀麟[1] 梁承邺[1] 张再君[1] 

机构地区：[1]中国科学院华南植物研究所,广州510650 [2]山东农业大学,泰安271018

出　　处：《武汉植物学研究》2000年第2期85-90,共6页Journal of Wuhan Botanical Research

摘　　要：绒毡层为 1层同型细胞 ,腺质性 ,幼期与其他药壁层相似 ,减数分裂开始后逐渐表现出自己独有的特点。小孢子母细胞纤维素壁生存到四分体时期 ,随着小孢子外壁出现而消失。四分体时期 ,小孢子发育出网状原覆盖层和柱状原基粒棒。成熟花粉属 2 -细胞型 ,含丰富淀粉和脂类物质 ,生殖细胞具有流线型结构 ,呈梭形或柳叶形。营养核与生殖细胞联系密切。Tapetum in watermelon is a layer of homogenous and glandular cells.Tapetal cells are very similar in appearance to cells of other anther layers at first,but gradually differentiate after microspore mother cells begin meiotic division.Microspores form a reticular protectum and columnar probacules as they are still encased in callose. Cellulosic walls of microspore mother cells become disappeared during tetrad stage.Pollens get mature at 2 celled stage.Generative cell has a streamlined shape.Vegetative cell contains copious starch and lipid.It is clear that there is a close connection between generative cell and vegetative nucleus .

关 键 词：西瓜 绒毡层 小孢子母细胞 花粉发育 

分 类 号：Q944.4[生物学—植物学] Q944.58