IN VITRO CULTURE OF RASPBERRY (RUBUS IDAEUS) FOR MASS PROPAGATION AND VIRUS ELIMINATION
GA3 had little effect on stem elongation and inhibited subsequent rooting. Using a rooting medium with the concentration of the macro-nutrients (MS) reduced to 1 fifth plus 0.01 mg/l IBA and dark treatments for 5 days resulted in 100 percent rooting for four cultivars. Rooted plants survived after being transferred to soil to ≥ 95 percent. Two of the cultivars rooted to less than 10 percent under the same conditions. On the other hand these cultivars produced roots after being transferred to soil and survived to about 90 percent. Plants from eight meristems of Mitra and Miranda were tested for viruses. Viruses could be detected in plants from only one meristem.