Study on the Germination of the Treated Hibiscus tiliaceus Seeds

Hibiscus tiliaceus L.seeds were treated by different concentrations of Gibberellin(GA) and Salicylic acid(SA) and placed in different soil types for germination.Seed germination was observed in pot experiment and field experiment.The results showed that the germination rate was 38.0 % and the germination potential was 35.3 % in the original soil when the seeds were treated by 200 μL/L GA.The germination rate was 42.6% and the germination potential was 32.0% in the original soil when the seeds were treated by 400 μL/L SA.In the pot experiment,both germination rate and germination potential reached the highest at the GA concentration of 20 μL/L,the germination rate was 39.4% and the germination potential was 36.0%.The germination rate and the germination potential were both the highest value at the SA concentration of 10 μL/L,the germination rate was 30.6% and the germination potential was 22.7%.In the field experiment,the germination rate and the germination potential reached the highest at the concentration of 400 μL/L salicylic acid and 400 μL/L GA,the germination rate was 26.5% and the germination potential was 18.3% for the GA treatment.The germination rate was 33.5% and the germination potential was 26.7% for the SA treatment.The best conditions for the hibiscus seed germination were obtained through the experiments.It provided the technical reference for the coastal forest construction of Casuarina equisetifolia L.mixed planting with H.tiliaceus.