The effect of 2 MHz ultrasound irradiation on Pisum sativum roots.
The effect of 2 MHz ultrasound irradiation on Pisum sativum roots.
复制标题
2 MHz 超声波照射对豌豆根的影响。
作者：
M. Miller;S. M. Voorhees;E. Carstensen;G. E. Kaufman
研究了2 MHz超声波在2. 5 ~ 2 2 W/cm ^{2}$强度下对豌豆根生长速率和有丝分裂指数的影响。超声波产生的第一个postexploding天的生长速度立即降低，随后逐渐恢复到对照值。超声波降低了根分生组织有丝分裂指数。强度和时间依赖性的关系，发现的增长速度和有丝分裂指数的减少。
The effect of 2 MHz ultrasound at intensity levels from 2.5 to $22\ {\rm W}/{\rm cm}^{2}$ on the growth rate and mitotic index of Pisum sativum roots was studied. The ultrasound produced an immediate reduction in the growth rate on the first postexposure day, followed by a gradual recovery to the control value. Ultrasound reduced the root meristem mitotic index. Intensity- and time-dependent relations were found for the growth rate and mitotic index reductions.