草地早熟禾叶表超显微结构与抗旱性的关系  

Leaf Epidermis Ultra-Microstructure Associated with Drought Resistance In Poa Pratensis Cultivars

作　　者：陈雅君[1] 祖元刚[2] 刘慧民[1] 陈颖[1] 刘丹[1] 

机构地区：[1]东北农业大学园艺学院,黑龙江哈尔滨150030 [2]东北林业大学森林植物生态学实验室,黑龙江哈尔滨150040

出　　处：《草地学报》2005年第4期339-343,共5页Acta Agrestia Sinica

基　　金：黑龙江省自然科学基金(项目编号C0207)资助

摘　　要：对4个草地早熟禾(P oa p ra tensis)品种男爵(B aron)、黑石(B lackstone)、肯塔基(K en tucky)和蓝月(B luem oon)的叶表皮超微结构及其对干旱的适应特性进行研究。结果表明:气孔器的开闭状态与干旱胁迫有关,而与品种的气孔器密度无关;品种间的硅质乳突密度和大小差异显著,密度大的品种,可以有效防止叶表面水分过度散失,但硅质乳突大小与气孔的运动调节无直接关系。Leaf epidermis ultra-microstructure ,ssociated with adaptability to drought stress in 4 Poa pratensis cultivars： Baron, Blaekstone, Kentucky and F;luemoon were studied. The results show that the opening or closing state of stomatal apparatus was related to the drought stress, but not to the density of stomatal apparatus. There were significant differences in silica size and cell density among 4 cultivars. A plant species with sufficient silica cell density can prevent water evaporation. The size of silica cells does not directly affect the adjusting movement of the stomatal apparalus.

关 键 词：草地早熟禾 超显微结构 气孔器 硅质乳突 抗旱性 

分 类 号：S812[农业科学—草业科学] Q945.1[农业科学—畜牧学]