Seed Germination of Two Hybrids Obtained via Cross-Pollination between Miscanthus sinensis × Miscanthus sacchariflorus

To date, economically and energy-costly vegetative propagation using rhizomes tissue culture are the only options for cultivation of Miscanthus spp. Some genotypes miscanthus produce fertile seeds, offering a valid alternative to propagation. A preliminary study has been conducted on seeds two hybrids obtained via interspecific cross-pollination between M. sacchariflorus sinensis: ‘GRC14’ (maternal: sacchariflorus) ‘GRC10B’ sinensis). Seeds were assessed germination traits in laboratory (at 25 °C dark) just after panicle harvest, during 1-year storage at room temperature or 8 °C. In second experiment, effects gibberellic acid (GA3) solution different concentrations (0, 50, 100, 300, 500 ppm) freshly matured assessed. Poor harvest (<30%) indicates occurrence physiological dormancy. Indeed, months later, rose up 76.7% 50.8%, ‘GRC10B’, peaked 95.6% 78% 6 harvest. After total 12 months, was significantly reduced both (≈60%). stored lost dormancy earlier than those Overall, improved by GA3, but extent GA effect genotype-dependent. conclusion, low establishment rate may result from direct seeding when fresh seed is used field. this case, use GA3 possible strategy ameliorate impact germination. case delayed sowings late winter–early spring, better perform