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Action des ultrasons sur la croissance de racines et leur absorption d'oxygène
Ultrasonic irradiation caused a growth inhibition (roots of Lens) ; such decrease of root elongation was found to be related with the intensity. The nitrogen (N) levels were only a!fected in the growth zone : the endogenous protein N was decreasing and the concentration of soluble N was increasing. The O, uptake, for ail the zones analysed, was activated.
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