Abstract

Bushiness in Gerbera is a major problem causing more than 30% loss of production during micropropagation and greenhouse production. We studied two Gerbera cultivars `Rosabella' (bushy) and `Sunset' (non-bushy). Three different types of inocula (main, adventitious and axillary shoots) were investigated. The choice of the inoculum had an important influence on bushiness, the main axis being the most sensitive. Higher KIN concentrations enhanced bushiness. Addition to the fungicide imazalil to the propagation medium reduced bushiness. The appropriate concentration of imazalil depended on the degree of bushiness and the inoculum type.

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