[The action of kinetin on dormant seeds of Cercis siliquastrum. Preliminary observations].

Seeds of Cercis siliquastrum L., whose dormancy is broken both by low temperatures and by treatments with gibberellin, were treated with kinetin at various concentrations. This substance does not induce germination, but causes the detaching of the basal portion of the tegument along a circular line without damaging the cells of tegument itself. Such a line is the same as observed in the tegument when the seed naturally germinates.