作　　者： ; ; ;

机构地区： 华南农业大学林学院

出　　处： 《中国农学通报》 2011年第7期11-15,共5页

摘　　要： 此文对在淹水条件下植物的形态学响应方面进行综述,以便为洪涝灾害频繁发生地区选育耐淹植物提供参考。淹水胁迫引起弱光环境,使气体扩散受限,叶绿素降解,光合速率下降。为了适应淹水环境,植物形态上产生通气组织、不定根和肥大的皮孔、茎干伸长、叶片减少等以维持氧气的扩散和高的吸收效率,维持高的能量贮备,以保障其正常的生理功能和新陈代谢。进一步开展与植物形态相关基因研究,采用实验室植物的数据预测野外淹水条件下的植物抗涝性,森林淹水胁迫的定位观测是今后的研究方向。 This paper summarizes the research advance in the morphological response of plant in order to supply basis for choosing waterlogging resistance plants in the regions suffering waterlogging.Waterlogging stress causes low light condition,as a result,gas diffusion is limited and the content of chlorophyll is degraded,finally photosynthetic rate of plants is declined.To adapt to waterlogging,plants develop some morphology characteristics,including producing aerenchyma,adventitious roots and larger lenticels,promoting stem elongation and wilting of leaves.So that they can maintain available oxygen diffusion,efficient absorption and a high energy level to ensure its normal physiological functions and plant metabolism.Further study on genes related to plant morphology adaptation and forecasting plant waterlogging resistance of field plants by data obtained in laboratory,and site-specific observation of waterlogging stress on forests are important aspects in the future.

关 键 词： 植物 淹水胁迫 形态特点

领　　域： [生物学]