ABSTRACT
Campanula isophylla Moretti is native in the Italian Alps. It is a perennial rosette-like plant forming many lateral shoots during the vegetative stage of growth. Propagation is usually done by top cuttings from vegetatively growing stock plants. The species has upright to decumbent or hanging branched shoots bearing solitary flowers on bracted branchlets at the end of the stems. Induced plants must be maintained in LD for normal development of flowers. The LD-induced shoot elongation associated with flowering is strongly enhanced by constant, relatively low temperatures. Plants grown at high day/low night temperatures flower a few days earlier than those grown at low day/high night temperatures. Shoot elongation and growth habit are greatly influenced by the type of light source used for daylength extension, while their effect on flowering is much the same.
