草莓试管苗与土培苗气孔形态和气孔密度的比较  

Comparison of stomatal morphology and density between tissue-cultured plantlets and earth-cultured ones

作　　者：袁惠君[1] 宋占午[2] 杨红[2] 丁兰[2] 王莱[2] 

机构地区：[1]兰州理工大学生命科学与工程学院,甘肃兰州730050 [2]西北师范大学生命科学学院,甘肃兰州730070

出　　处：《兰州理工大学学报》2004年第5期79-80,共2页Journal of Lanzhou University of Technology

基　　金：甘肃省教育厅科研资助项目(001 14)

摘　　要：通过对草莓(fragariaananassaduch)试管苗与土培苗气孔形态和叶片下表皮气孔密度的观察比较,结果表明:试管苗气孔大小和气孔开度都明显大于土培苗,气孔无关闭能力;土培苗与试管苗两者叶片下表皮气孔密度的差异不显著,说明试管苗叶片保水能力差可能主要与气孔无关闭能力有关.　By means of observation and comparison of the stomatal morphology as well as the stomatal density on lower leaf epidermis between tissue-cultured plantlets of strawberry and earth-cultured ones,it is shown that the size and opening of the stoma on the tissue-cultured plantlets is remarkably greater than that on earth-cultured ones,and there is no possibility for the former to close the stoma.On other hand,there is no remarkable difference in stomatal density on the lower leaf epidermis between the both plantlets,showing that the poor water-keeping capability of tissue-cultured plantlets may be due to their inability to close the stoma.

关 键 词：草莓 气孔 试管苗 密度 

分 类 号：Q945.172[生物学—植物学]