一球悬铃木叶结构的解剖研究  

Study on Anatomical Structure of Platanus occidentalis

作　　者：崔宏安[1] 白红霞[2] 丁虹茹[1] 曹延武[2] 陈铁山[1] 

机构地区：[1]西北农林科技大学,生命科学学院,陕西杨陵712100 [2]延安市宝塔区林业局,陕西延安716000

出　　处：《西北林学院学报》2008年第6期66-68,共3页Journal of Northwest Forestry University

摘　　要：采用石蜡切片法研究了一球悬铃木(美国梧桐)叶的解剖结构。结果表明:一球悬铃木叶由表皮、叶肉和叶脉三部分组成,叶片厚度150μm。一球悬铃木叶表皮及叶脉和叶柄上密被绒毛和星状毛,主脉上下的表皮细胞小且排列紧密;叶肉上、下均有栅栏组织,并且较为发达,海绵组织弱化;叶脉发达;气孔密度大,21.4个/单位面积,具有较强的抗旱性特征。Paraffin method is employed to study the leaf structure of Platanus occidentalis with the results that the leaf of P.occidentalis consists of three parts,i.e.the epidermis,leaf vein and mesophyll leaf blade with the thickness of 150 μm.Its epidermis,leaf vein and petiole cover with villus and stellate hairs.The upper and lower epidermal cells about the main vein are small and closely collocated.There is considerately developed palisade tissue in the both upper and lower mesophylls,and the leaf contains degenerate spongy tissue and well developed veins.And it is dotted with drought resistant stomata with a high density of 21.4 per unit area.

关 键 词：一球悬铃木 叶 解剖结构 

分 类 号：S718.3[农业科学—林学]