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为探索杨树抗旱性生长的途径,对新疆现引进的斯大林杨、抗盐碱杨、抗虫杨、北美速生杨、银新杨等5个杨树无性系叶片进行石蜡切片解剖结构观测,并用模糊数学的隶属函数法对叶片上表皮厚度、栅栏组织、海绵组织、叶片组织结构紧密度、疏松度等8项叶片抗旱性指标进行抗旱性综合评价。结果表明,5种杨树的抗旱性顺序为:斯大林杨>抗虫杨>抗盐碱杨>银新杨>北美速生杨。同时,运用灰色关联分析法对5种杨树抗旱性与8项叶片指标进行相关性分析,揭示各指标的抗旱性。表明植物叶对干旱的适应都经历着不同的途径,同时在表现方式上也各不相同。
In order to explore the ways of drought-resistant poplar growth, anatomical structures of five poplar clones of Populus trichocarpa, Populus deltoides, Populus deltoides, Populus deltoides and Populus deltoides, introduced in Xinjiang were observed and analyzed with The fuzzy mathematics membership function method was used to evaluate the drought resistance of 8 leaf drought resistance indexes, such as epidermis thickness, palisade tissue, sponge tissue, leaf tissue structure density and porosity. The results showed that the order of drought resistance of five poplar species was as follows: Stalin> Poplar> Saline - resistant> Poplar> Populus. At the same time, the gray relational analysis was used to analyze the correlation between the drought resistance of the five poplar species and the eight leaf indexes, revealing the drought resistance of each index. It shows that plant leaves have different pathways to adapt to drought, and they also behave in different ways.