|
|||||
|
|
| Larrea tridentata叶片解剖结构与保水特性的研究 | |
| 引用本文： | 张香凝,王保平,孙向阳,乔杰,崔令军,CUI Lingjun.Larrea tridentata叶片解剖结构与保水特性的研究[J].生态环境,2011,20(11):1634-1637. |
| 作者姓名： | 张香凝 王保平 孙向阳 乔杰 崔令军 CUI Lingjun |
| 作者单位： | 1. 河南省农业科学院植物营养与资源环境研究所,河南郑州450002;北京林业大学水土保持学院//教育部水土保持与荒漠化防治重点实验室,北京100083 2. 国家林业局泡桐研究开发中心,河南郑州,450003 3. 北京林业大学水土保持学院//教育部水土保持与荒漠化防治重点实验室,北京,100083 |
| 基金项目： | 国家林业局"948"项目 |
| 摘 要： | 为了解L.tridentata叶片在解剖学方面适应干旱的特征以及叶片的保水特性,采用石蜡切片法观察L.tridentata叶片的解剖结构,同时测定叶片保水曲线。结果显示：L.tridentata叶片厚233.6μm,表皮细胞大,具有较厚的表皮细胞外壁与角质层,上表皮外壁与角质层总厚度为23.7μm;栅栏组织发达,在叶片中占55%,细胞细长,排列紧密。从叶片保水曲线上看,L.tridentata叶片从失水到基本恒重的时间为120 h左右,显示其叶片抗脱水能力强。 |
| 关 键 词： | Larrea tridentata 叶片 解剖结构 抗旱性 叶片保水力 |
Ability of anti-dehydration and aridity to anatomical structure of leaves of Larrea tridentata |
|
| ZHANG Xiangning,WANG Baoping,SUN Xiangyang,QIAO Jie,SHI Fugang,CUI Lingjun.Ability of anti-dehydration and aridity to anatomical structure of leaves of Larrea tridentata[J].Ecology and Environmnet,2011,20(11):1634-1637. | |
| Authors: | ZHANG Xiangning WANG Baoping SUN Xiangyang QIAO Jie SHI Fugang CUI Lingjun |
| Institution: | ZHANG Xiangning1,2,WANG Baoping3,SUN Xiangyang2,QIAO Jie3,SHI Fugang1,CUI Lingjun3 1.Henan Academy of Agricultural Sciences,Institute of plant nutrition,resources and environment,Zhengzhou 450002,China,2.Beijing Forestry University,Beijing 100083,3.Paulownia Research and Development Center of China,Zhengzhou 450003 |
| Abstract: | The structure of Larrea tridentata leaves were observed through slices of paraffin wax in order to find out its drought-resistance mechanism in anatomy.The results showed that its leaves were thick（T=233.6 μm）,and epidermis cells were big.Its epidermis cell wall and cuticle were thick（T=23.7 μm）.Its palisade tissue was well developed,accounting for 55% of the leaf.And the cell of palisade tissue was acerose and compact.The water-losing curve showed that the dehydration resistance ability of L.tridentata leaves was strong.It took 120 h before constant weight.The water-losing curve of L.tridentata leaves showed the mor-phological characteristics of it water retention ability. |
| Keywords: | Larrea tridentate leaves anatomical structure drought resisitance |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |