云杉针叶的扫描电镜观察  

Scanning Electron Microscopic Observation of needles Leaves in Picea

作　　者：贾敬鸾[1] 陈晓松[1] 陈正华[1] 

机构地区：[1]中国科学院遗传研究所,北京师范大学生物系

出　　处：《云南大学学报（自然科学版）》1995年第S1期79-81,97,共4页Journal of Yunnan University(Natural Sciences Edition)

基　　金：国家自然科学基金

摘　　要：本文应用扫描电子显微镜．对针叶树云杉的针叶进行了表面结构的观察．结果表明，云杉针叶表面有较厚的角质层，角质层呈条纹状排列．从横切面上看，针叶为四角形，叶的四面均有气孔．云杉的气孔下陷，呈蜂窝状，叶表皮具有瘤状突起物，这些构造特征，都有利于减少植物体水分的散失．通过对云杉这些结构的观察研究，可以为它的品种改良提供依据．Scanning electron microscopic observation of the needles in picea were des-cribed,the results showed that,the cuticular layer of surface needles was equal thick ei-ther on upside or on reverside epidermis.The cutile streaky arranged on the surface andlikely irrigation canals structures formed.The stomatas sunk on the epidermis and muchmore distributed on the upside than the reverside epidermis.Different quantity of nodlelike structures arranged on the epidermis.Those structures and chracters, means proventwater less and benefite nutritiori absorb.It's reference for selection of picea in breeding.

关 键 词：云杉 针叶 电镜扫描 

分 类 号：S791.180.1[农业科学—林木遗传育种]