摘要
自从Runner和Ursprun在一种蕨类植物(Fernsporangia)的1年生环带细胞中发现木质部空穴化现象以来,发现许多植物会在水分胁迫、冻害、病害(如榆树荷兰病、板栗枯萎病等)、机械张力(如风力引起的张力)、微生物引起的导管壁退化和机械损伤及震动条件下发生木质部空穴和栓塞化现象。各国学者也在此方面做了大量细致的工作。本文综述了木质部空穴和栓塞化对植物的影响,包括木质部空穴和栓塞化对植物导水率、生长和生产力、抗旱性、成节分枝模式等的影响。
Since the discovery of xylem cavitation in the annual cells of Fern sporangia, the phenomena of xylem cavitation and embolism have been found in many plants under the conditions of water stress, freezing, pathogen, mechanical stress, microbial wall degradation, and mechanical injury and shock. The effects of xylem cavitation and embolism were reviewed on hydraulic conductance, drought tolerance, plant growth and productivity and plant segmentation.
出处
《热带农业科学》
2004年第6期53-58,67,共7页
Chinese Journal of Tropical Agriculture
基金
中国热带农业科学院基金资助项目
关键词
木质部
植物
抗旱性
榆树
板栗
导水率
水分胁迫
栓塞
影响
机械张力
xylem cavitation and embolism
hydraulic conductance
plant growth
plant productivity
drought tolerance
plant segmentation
