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.
出处
《重庆大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
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)
关键词
声波刺激
中华猕猴桃
试管苗
根系活力
sound stimulation
Actinidia chinensis
plantlet
root activity
