Abstract: Effects of the light distillates from fat-soluble unsaponifiable matter of Ginkgo biloba L. leaves with different concentrations on Melampodium paludosum Kunth seed germination and seedlings growth were studied. The results indicated that: the concentrations (50 mg/L) of the light distillates has high hastened effect on seed germination and seedling growth. The germination rate was 73%. The seedling height and root length of M.paludosum were 2.92 and 4.87 cm, were 122%,127% and 123% of the control group, respectively. The promotion effect is remarkable. The contents of chlorophyll, soluble protein in seedlings and activities of root, amylase of seeds increased after treated with light distillates. When the light distillates was 50 mg/L, it was found that the amylase activity was 0.72 mg/(g·min), the root activity was 58.18 μg/(g·h), and the contents of chlorophyll and solution protein were 1.679 mg/g and 0.061 mg/g, respectively. They were 150%, 136%, 183% and 161% of the control group, respectively.

Key words: Ginkgo biloba leaves, unsaponifiable matter, light distillates, Melampodium paludosum, seed germination, seedling growth