1.The experiment results indicated that cellulase activity in abscission zone from petiole of bean and cotyledonpetiole of cotton was increased after treatment of GA_3, but it was inhibited by IAA.
2.This was in accordance with the promoting effect of GA_3 and retarding effect of IAA on the abscission of petiole and cotyledonpetiole of bean and cotton. Both the accelerated abscission and cellulase activity enchanced by GA_3 were be inhibited by cycloheximide.
3.of Acer negundoA tissue culture system for Acer negundo by the route of inducing calli were primarily established through screening out the best media and hormone combinations for different explants (stem segment, leaf, cotyledon, petiole).
