干旱区生态环境知识资源中心(Arid): 不同地理环境下酸枣叶的形态解剖特征

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	不同地理环境下酸枣叶的形态解剖特征
其他题名	Comparison on Characters of Leaf Anatomy of Ziziphus jujuba var.spinosa in Different Geography Environment
	康东东; 韩利慧; 马鹏飞; 魏学智; 毕润成
来源期刊	林业科学
ISSN	1001-7488
出版年	2008
卷号	44 期号:12 页码:135-
中文摘要	水资源短缺是目前制约农业生产的主要问题,全球约有43%的耕地为干旱、半干旱地区。在自然条件下,干旱是决定植被地理分布和限制作物产量的主要因素(Schulze,1986)。提高植物的抗旱能力已成为现代植物研究中亟需解决的关键问题之一。干旱、半干旱地区的植物长期处于干旱的影响下,在形态、解剖构造和生理功能上均发生一系列适应性变化,构成植物的抗旱性(Krameret al.,1979)。叶是光合作用、气体交换及蒸腾最重要的位点,与周围环境有密切联系,其形态结构对生境的变化反应最为敏锐,可塑性也最大。因而,植物对不同环境的适应性改变易反映在叶的形态结构上(Wylie,1951;Jackson,1967)。酸枣(Ziziphus jujubavar.spinosa)为鼠李科枣属的一种灌木或小乔木,是具有较高经济价值的野生果树资源,也是重要的药用植物,还是防风固沙、保持水土的先锋树种。酸枣主要分布于我国北方地区,其生态幅很广,从湿润的东海海滨到极度干旱的新疆均能正常生长。
英文摘要	The leaf anatomic structure of %Zizyphus jujuba% var. %spinosa% from seashore to western arid area (near 37° N latitude) of China were investigated with both a light microscope and a scanning electron microscope. The results showed that all provenances shared the following common features. The distribution of stomata was generally uniform on the abaxial surface, and the type of stomatal apparatus was mainly anomocytic. The upper epidermis was formed by one layer of cells with tight, regular arrangement, and the lower epidermis was also formed by one layer of cells, and the type of anticlinal cell wall on both the upper and on the lower epidermis was straight. In the contrast, there were some differences in the anatomic characteristics among the provenances. With the decrease of water content in the habitats, (1) the stomatas became smaller gradually, and the density of stomata increase gradually; (2) the cells of both the upper and the lower epidermis became smaller gradually; (3) thickness of the upper and the lower cuticle, as well as the thickness of leaf, increased gradually; (4) bifacial leaf changed to isobilateral leaf; (5) the proportion of palisade tissue increased gradually, whereas the spongy tissue decreased; (6) diameter of midrib vessels and of midrib vascular bundles increased gradually; (7) the epidermis ornament changed in an order of smoothness, strip, reticulation, and mountain-like that represented the leaf structural characteristics of xerophytes. The results also showed that the sequence of the drought resistance delicacy was thickness of upper cuticle>density of stomata in proximal surface, size of stomata in proximal surface (length/width), thickness of lower cuticle, thickness of palisade, and thickness of spongy>average length of stomata, average length/width of upper epidermis cells, thickness of leaf, value of CTR, thickness of upper epiderm cell, thickness of lower epidermic cell, layers of palisade>diameter of midrib vascular bundle, average width of stomata, the area of stomata in proximal surface, average length of lower epidermis cells, and average length/width of lower epidermis cells>average length/width of palisade tissue cell.
中文关键词	酸枣 ; 叶结构 ; 生态环境 ; 抗旱
英文关键词	Ziziphus jujuba var. spinosa leaf structure ecological environment drought-resistant
类型	Article
语种	中文
国家	中国
收录类别	CSCD
WOS类目	Forestry
WOS研究方向	Forestry
CSCD记录号	CSCD:3439292
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/222570
作者单位	康东东, 山西师范大学生命科学学院, 临汾, 山西 041004, 中国.; 韩利慧, 山西师范大学生命科学学院, 临汾, 山西 041004, 中国.; 马鹏飞, 山西师范大学生命科学学院, 临汾, 山西 041004, 中国.; 魏学智, 山西师范大学生命科学学院, 临汾, 山西 041004, 中国.; 毕润成, 山西师范大学生命科学学院, 临汾, 山西 041004, 中国.
推荐引用方式 GB/T 7714	康东东,韩利慧,马鹏飞,等. 不同地理环境下酸枣叶的形态解剖特征[J],2008,44(12):135-.
APA	康东东,韩利慧,马鹏飞,魏学智,&毕润成.(2008).不同地理环境下酸枣叶的形态解剖特征.林业科学,44(12),135-.
MLA	康东东,et al."不同地理环境下酸枣叶的形态解剖特征".林业科学 44.12(2008):135-.