摘要
为筛选适宜的植物应用到装配式墙体绿化中,以鸭脚木(Schefflera octophylla)、花叶鸭脚木(S.octophylla'Variegata')、花叶红背桂(Excoecaria cochinchinensis'Variegata')、红背桂(E.cochinchinensis)、花叶假连翘(Duranta erecta'Variegata')、金叶假连翘(D.erecta'Golden Leaves')为试验材料,通过人工气候室模拟高温环境进行胁迫试验,以25℃为对照,设置35,40,45和55℃共4个梯度,研究高温胁迫下6种植物耐热生理指标丙二醛、可溶性蛋白质、可溶性糖和脯氨酸含量的变化情况,观察植株形态,计算各生理指标的耐热系数并进行主成分分析,最后用隶属函数法对6种植物的耐热性进行综合评价。通过隶属函数综合评价分析得出,6种植物的耐热隶属函数值各不相同,如在45℃下的排序结果为花叶红背桂>鸭脚木>红背桂>金叶假连翘>花叶假连翘>花叶鸭脚木,综合评价筛选红背桂、花叶红背桂、鸭脚木适合应用于装配式垂直绿墙。
To screen suitable plants for wall greening,the Schefflera octophylla, S. octophylla ＇Variegata＇, Excoecaria cochinchinensis ＇Variegata＇, Excoecaria cochinchinensis, Duranta erecta ＇Variegata＇, Duranta erecta ＇Golden Leaves＇ were selected as the experimental materialsas. The stress test of the plants under high temperature was applied in the artificial climate chamber that simulate high temperature environment. There were 5 temperature gradients, which were 25（control）, 35, 40, 45 and 55℃. In the study, we observed the plants external morphological changes and recorded the changes in content of malondialdehyde（MDA）, soluble protein, soluble sugar and proline under high temperature stress. The heat resistance coefficients of each physiological index were calculated and principal component analysis was performed. Finally, the heat resistance of six plants were evaluated by membership function method. The heat resistance membership values of six plants were different and rank in following order at 45 ℃, which was Excoecaria cochinchinensis ＇Variegata＇ Schefflera octophylla Excoecaria cochinchinensis Duranta erecta ＇Golden Leaves＇ Duranta erecta ＇Variegata＇ S. octophylla＇Variegata＇. According to the evaluation, the Excoecaria cochinchinensis, Excoecaria cochinchinensis ＇Variegata＇, Schefflera octophylla were suitable for use as greening plant on the assembly-type vertical walls.
作者
杨子平
胡杏
阮琳
刘念
YANG Ziping;HU Xing;RUAN Lin;LIU Nian(Guangzhou Institute of Forestry and Landscape Architectur;Zhongkai University of Agriculture and Engineerin)
出处
《林业与环境科学》
2018年第3期58-64,共7页
Forestry and Environmental Science
基金
广东省重大科技专项资金项目(2013A011401004)
关键词
高温胁迫
耐热性
生理指标
装配式墙体绿化
high temperature stress
heat resistance
physiological index
assembled vertical greening
