TIAN Zhiguo,YANG Yan,WANG Fei.Physiological Response of Nine Kinds of Garden Plants to Drought Stress[J].Northern Horticulture,2017,41(02):67-71.[doi:10.11937/bfyy.201702016]
九种园林乔木对自然失水胁迫的生理响应
- Title:
- Physiological Response of Nine Kinds of Garden Plants to Drought Stress
- Keywords:
- drought stress; garden arbors; membership function
- 文献标志码:
- A
- 摘要:
- 以雪松、大叶女贞、白皮松、紫叶李、银杏、垂柳、国槐、紫薇与臭椿等9种城市园林绿化中使用频率相对较高的乔木为试材，采用“离体枝条水插”的方法，研究了为期15 d的自然失水胁迫对供试材料的影响，以期筛选出抗旱性强的乔木种类，为水分相对匮乏的地区绿化提供参考。结果表明：自然失水条件下，9种园林乔木的7个生理指标的变化趋势基本一致，即随胁迫时间与程度的加强，叶片相对含水量（RWC）和叶绿素总含量呈现降低的趋势，而水分饱和亏缺（WSD）增加，相对电导率（REC）增大，丙二醛（MDA）含量和游离脯氨酸（Pro）含量呈现递增的趋势，植物种类不同，其变化幅度不同。该试验并采用隶属函数方法，对9种园林乔木抗旱性进行排序。综合分析，9种乔木的抗旱能力依次为白皮松＞臭椿＞紫叶李＞国槐＞大叶女贞＞垂柳＞银杏＞雪松＞紫薇。
- Abstract:
- Physiological effects of 9 kinds of garden arbors (Cedrus deodara,Ligustrum compactum,Pinus bungeana,Prunus cerasifera,Ginkgo biloba,Salix babylonica,Sophora japonica,Lagerstroemia indica,Ailanthus altissima) for a period of 15 days natural water stress treatment were tested.It will provide value reference to instruct greening in regions arid and semi-arid areas.The results indicated that in the natural water loss conditions,drought-resistance indexes from 9 arbors were basically the same,with the extent of stress,the relative moisture content and chlorophyll content decreased,the relative permeability of plasma membrane and MDA content increased,free proline increased,but changes in species.Additionally,it was concluded that the order of 9 plants drought resistance strength was: Pinus bungeana,Ailanthus altissima,Prunus cerasifera,Sophora japonica,Ligustrum compactum,Salix babylonica,Ginkgo biloba,Cedrus deodara,Lagerstroemia indica by the method of membership function to comprehensive assessment of the six physiological indicators.
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备注/Memo
第一作者简介：田治国（1978-），男，甘肃天水人，博士，讲师，现主要从事园林植物生理生态等研究工作。E-mail:zhiguo.tian@163.com.责任作者：王飞（1954-），女，博士，教授，博士生导师，现主要从事果树及花卉生理与生物等研究工作。E-mail：xnwangfei521@126.com.基金项目：中国科学院知识创新资助项目（kzcxz2xb1206）。