不同频率的声波刺激对猕猴桃组培苗根系发育的影响  

Effects of Different Sound Frequency on Roots Development of Actinidia Chinensis Plantlet

作　　者：阳小成[1] 丁剑平[2] 王伯初[3] 

机构地区：[1]成都理工大学材料与化学化工学院,成都610059 [2]重庆科技学院建工学院,重庆400042 [3]重庆大学生物工程学院生物力学与组织工程教育部重点实验室,重庆400030

出　　处：《重庆大学学报（自然科学版）》2007年第11期72-74,85,共4页Journal of Chongqing University

基　　金：国家自然科学基金资助项目(39770206)

摘　　要：用不同频率的声波刺激中华猕猴桃(Actinidia chinensis)的组培苗,研究模拟声场的环境应力刺激对植物根系发育的生物学效应。结果表明,猕猴桃试管苗的根系发育过程对外界声波刺激有较显著的双向效应。适度频率的声波(1000 Hz左右)可促进幼苗根系的生长发育;但当声波频率超过一定范围(2000 Hz)后,对根系发育的促进效应就明显减弱,到5000 Hz时甚至开始抑制组培苗的根系发育。文中同时探讨了声波影响根系发育的可能机理。Several primary plantphysiological indexes related to root development in sound field were measured. The results showed that sound field stimulation of different frequency had some dual effects on root development of A. chinensis plantlet that came from its callus. The sound wave stimulation of moderate frequency increased the root activity, total length and number of roots, whereas decreased the permeability of cell membrane. A conclusion was drawn from the experiment that the optimal stimulation of sound frequency to root development of A. chinensis plantlet was 1 000 Hz or so. Under the conditions, the sound field can exceeded certain limit value （5 000 Hz） ; the increase of root activity would be restrained chiefly owing to the integrality of cell membrane being destroyed. The mechanisms of sound stimulation stress on plant roots development were also discussed.

关 键 词：声波刺激 中华猕猴桃 试管苗 根系活力 

分 类 号：Q689[生物学—生物物理学] Q943.1