Effect of Microbiological Products on Bulblet Development of Lilium spp. in Scale Culture

The aim of the present study was to investigate the effects of two locally produced microbiological products Trihodermins B-J and Vitmins on scale promotion and bulblet development in Lilium. Lily scales were given three treatments: untreated controls; Vitmins solution (10 ml L) and Vitmins solution (10 ml L) + Trihodermins B-J (dry powder form, at 10 g kg in the substrate). After treatment, scales were placed in a polyethylene bag in peat moss. Bulbs of three cultivars from different groups were used: Asiatic hybrid ‘Gardenja’, Longiflorum × Asiatic (LA) hybrid ‘Sonora’ and Trumpet hybrid ‘Elegija’. The scales were incubated in a plastic greenhouse at 15°C for 12 weeks; at 5°C for 10 weeks; and 18°C for 4 weeks. The effectiveness of microbiological products was evaluated by the number of bulblets per scale, the diameter of bulblets, shoot height, root length, and the percentages of dead plants. Significant difference (P < 0.05) between shoots and roots among the three cultivars and variants were found. The mean values obtained for shoots by treatment with Vitmins + Trihodermins B-J were: ‘Gardenja’ 138.5 ± 9.8 mm, ‘Sonora’ – 102.0 ± 4.7 mm and ‘Elegija’ – 7.0 ± 3.0 mm. The coefficient of variation for number of bulblets per scale was recorded in the range from 19.7 to 39.2%. Treatment with Vitmins + Trihodermins B-J resulted in a significantly higher number of bulblets per scale and greater shoot height (P < 0.05 vs. control). _____________________________________________________________________________________________________________