柴达木荒漠草原4种灌木叶片解剖结构与其抗旱性的研究  

Study on leaf dissection structure and drought resistance of four shrubs growing in desert steppe in Tsaidam

作　　者：李林芝[1] 邵麟惠[1] 于应文[2] 陈建纲[1] 张德罡[1] 

机构地区：[1]甘肃农业大学草业学院,甘肃兰州730070 [2]兰州大学草地农业科技学院,甘肃兰州730070

出　　处：《草原与草坪》2009年第3期20-23,共4页Grassland and Turf

基　　金：青海省科技攻关计划子项目(2004-N-108)资助

摘　　要：利用石蜡制片法,对青海省柴达木荒漠草原4种灌木唐古特白刺(Nitraria tangutorum)、驼绒藜(Ceratoides latens)、里海盐爪爪(Kalidium gracile)、木本猪毛菜(Salsola arbuscula)叶片的解剖结构进行了观察和分析。结果表明,4种植物叶片的解剖结构性状与耐旱性有着密切的关系,4种植物的叶片均具有旱生的形态及结构特征,适宜于我国干旱半干旱地区生长。对4种灌木叶片的6个抗旱指标栅栏组织厚度、海绵组织厚度、栅栏组织厚/海绵组织厚、表皮细胞厚度、表皮细胞外壁厚度和气孔下陷深度进行了测定,运用模糊数学隶属函数值法对4种灌木的抗旱性进行综合分析表明,4种灌木抗旱性大小顺序依次为:唐古特白刺>驼绒藜>木本猪毛菜>里海盐爪爪。The leaf structure of Nitraria tangutorum , Ceratoides lateens, Kalidium gracile , Salsola arbuscula growing in the desert steppe of Tsaidam, Qinghai Province was studied by using the method of paraffin sheet formatting. The result indicated that the leaf dissection structure characters were closely related to the drought resistance. The drought resistant structure was found in the leaf of 4 shrubs. These 4 shrubs were suitable to be used in arid and semi-arid areas, six drought resistance indexes of leaf of four shrubs were measured and a comprehensive evaluation on drought resistance of them was provided through the method of subordinate function as well. The order of drought resistance capability of 4 shrubs was Nitraria tangutorum〉Ceratoides lateens 〉 Salsola arbuscula 〉Kalidium gracile.

关 键 词：叶片 解剖结构 抗旱性 

分 类 号：Q944.52[生物学—植物学]