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柽柳属(TamarixL.)植物是耐旱耐盐胁迫的良好固沙造林树种,借助木质部导水率及栓塞测量系统和扫描电子显微镜,分别对6种柽柳属植物侧枝的导水能力与纹孔特征进行测量观察。结果表明,6种柽柳属植物侧枝木质部导水效率和纹孔数量特征具有显著的种间差异性(P<0.01),其导水率的高低排序为刚毛柽柳(T.hispida)>沙生柽柳(T.taklamakanensis>多枝柽柳(T.ramosissima)>细穗柽柳(T.leptostachys)>中国柽柳(T.chinensis)>短穗柽柳(T.laxa);刚毛柽柳具有最大的纹孔膜面积和外纹孔口面积,而短穗柽柳的相应指标较小。6种柽柳属植物侧枝木质部纹孔膜结构没有明显的差异性,纹孔膜上未见微孔;各柽柳植物侧枝导水率与外纹孔口面积具有较好的正相关关系。
Tamarix L. plants are good sand-fixing and tree-planting species for drought-tolerant and salt-tolerant stress. By means of xylem hydraulic conductivity and embolism measurement system and scanning electron microscopy, the water-carrying capacity and pits of six species of Tamarix L. Measurement observation. The results showed that there were significant interspecies differences in water conducting efficiency and number of pits among the six species of Tamarix L. (P <0.01), and the order of their hydraulic conductivity was T.hispida> (T. talamkanensis> T.ramosissima> T. leptostachys> T. chinensis> T.laxa); T. tamarisk had the largest area of parenchyma and The area of stomata is the same, but the corresponding index of staghorn willow is smaller.The structure of xylophyte membrane of the genus Phyllanthus has no obvious difference, no micropores are found on the stomata, Orifice mouth area has a good positive correlation.