Abstract
During the display life of potted plants of three Dicentra species ( Dicentra eximia, Dicentra formosa, and Dicentra spectabilis), more flowers opened if the plants were treated before harvest with the anionic silver thiosulfate complex (STS). This increase in flower number resulted in a 75% increase in the display life of D. eximia (to 14 days) and a 65% increase in display life of D. formosa (to 28 days). A similar effect was achieved by producing the plants under supplementary irradiance, which also increased plant height and decreased production time. Height of D. spectabilis could be controlled by application of daminozide, and this regulator had no effect on forcing time, flower number or display life of the plants.
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