Study of chemical composition and biological activity of substance-satellite of seed of Metasequoia glyptostroboides Hu & Cheng

Using scanning electron microscopy, it was found that the composition of substan­ces-satellite of seeds of Metasequoia glyptostroboides Hu et Cheng consist Carbon, Oxygen in a lot amount, which we believe indicates the organic nature of the substance, and Phosphorus, Aluminum, Chlorine and Potassium in smaller concentrations. The substance in the high (2–1%) concentrations reduced germination metasequoia seeds, but it stimulated their germination at the decreasing concentration in the range of 0.05–0.005 %. Similar impact of substance carried on morphometric parameters of seedlings of wheat and maize, taken as test plants. Inhibition of length and weight of roots and shoots was observed in the range at 2–1 % and stimulation in the range 0.1–0.005 %. Thus, substances-satellite of metasequoia seeds perform relative its regulatory role for their seed germination, as in the case of seeds of other species of plants