Abstract:

In present experiment, seeds of two tobacco cultivars, Honghua Dajinyuan and MS Yunyan 85, were used to investigate effects of seed pelleting with magnetic powder on tobacco seed germination and seedling growth. The results showed that three treatments with magnetic powder concentrations of 2% (B2), 5% (B5) and 8% (B8) were mixed with second layer powder of the pelleting, respectively, had no negative influence on germination emergence, germination percentage and germination index of two tobacco cultivar seeds. For Honghua Dajinyuan, root length and shoot height significantly increased in treatments of B2 and B8 , and B5, respectively. For MS Yunyan 85, shoot height was obviously improved by B2, B5 and B8, and shoot dry weight was significantly enhanced by B5. It suggested that the suitable magnetic powder concentration for seed pelleting was 2% to 8%, and adding magnetic powders to the second layer of the pelleting was better.

Key words: tobacco seed, germination, magnetic powder, pelleting, chlorophyll content