Abstract:

To discuss the optimal condition for the seed germination and seed longevity of Flemingia macrophylla, and provide scientific evidences for cultivation and production of F. macrophylla. The rate of water absorption of the seed was determined. Methods of frazzling seed coat, soaking in warm water, immersing seed in H2SO4 were used to treat hard seed. And the germination energy, germination rate and germination index of F. macrophylla was determined under different temperature and light, different germination bed and different storage time in the experiment. The rate of water absorption of F. macrophylla seed was 31.26%. The poor water permeability of seed coat was a crucial factor which affects the germination of seeds. 25-30℃ was the suitable temperature range of F. macrophylla germination. The germination rate could rise to 66.67% when the seed was cracked by sad and soaked 4 h in 80℃ warm water. The effect of the light and germination bed was insignificant. The germination rate of seeds stored for three years was 61% under 4℃ lower temperature condition, but it reduced to 32% stored for four years. F. macrophylla seeds were hard seeds and needed pretreatment before experiment. The seeds belonged to the high-temperature-germinating and non-photoblastic type. Seed longevity was longer and can store four years.