渭北几种柿树的叶片结构与抗旱性关系的研究  

Study on Relations of Leaf Structure and Drought Resist Characteristics of Some Persimmon Varieties in Weibei Area

作　　者：贺军虎[1] 王永熙[1] 王小红[1] 陈业渊[2] 魏守兴[2] 

机构地区：[1]西北农林科技大学园艺学院,陕西杨陵712100 [2]中国热带农业科学院品种资源所,海南儋洲571737

出　　处：《西北林学院学报》2005年第1期68-70,共3页Journal of Northwest Forestry University

摘　　要：通过对渭北旱区火柿、水柿、木洼柿和柿属君迁子气孔形态和叶片解剖结构的研究表明,柿树对干旱有一定的适应性,其气孔的大小与气孔指数呈正相关,气孔在中午表现出“午休现象”;干旱影响柿树叶片的形态建成,表现为春季叶片的栅栏组织与海绵组织厚度比值、细胞密集度大于其秋叶。从柿树叶的结构和生理特性上看,柿树具有偏旱生植物的倾向。Stoma morphology and structures of the leaves of some persimmon varieties in Weibei arid area are studied. The results show persimmon has adapted to the drought area. The size of stoma has positive relation with stomatic index. The stomata shows a “noon-break decreasing” phenonmennon. The leaf development is affected by drought, since the ratio between palisade and spongy tissue and the cell density of palisade tissue of spring leaf are larger than those of autumn ones. From the structure and physiology ,persimmon shows some characteristics of xerophils.

关 键 词：柿树 结构 干旱 

分 类 号：S665.201[农业科学—果树学]