摘要
采用常规石蜡切片技术,对膜荚黄芪与蒙古黄芪小孢子发育进行细胞学观察,对小孢子不同发育时期与花蕾大小相关性进行研究。结果表明:膜荚黄芪与蒙古黄芪花粉母细胞呈圆形排列,小孢子四分体均属四面体型,减数分裂、胞质分裂属同时型,绒毡层属分泌型,花粉粒属二细胞型,花粉粒外壁上均有3个膜状突起。膜荚黄芪与蒙古黄芪小孢子各发育时期与花蕾大小之间存在较密切的相关性。
Based on cytological observation on the microspore development of Astragalus membranaceus and A.membranaceus var.mongholicus by traditional paraffin section technology,the research was carried out on the correlation between different developmental stages of microspores and bud sizes.The research results shown that pollen mother cells of A.membranaceus and A.membranaceus var.mongholicus were in cyclic permutation;all the tetrads of microspores were tetrahedron-shaped;meiosis and cytokinesis were simultaneous;tapeta were of secretor type;pollen grains were two-celled,and there were three protuberances on the pollen exine.In conclusion,there is a close correlation between different developmental stages of microspores and bud sizes.
出处
《辽宁林业科技》
2011年第6期11-13,18,共4页
Liaoning Forestry Science and Technology
基金
国家自然科学基金资助项目(30860036)
吉林省自然科学基因项目(201115228)
关键词
膜荚黄芪
蒙古黄芪
小孢子
花蕾
相关性
Astragalus membranceus； A.membranaceus var.mongholicus； microspore； bud； correlation
