THE SEED MORPHOLOGY AND LABORATORY GERMINATION OF SIBIREAN SPRUCE (PICEA OBOVATA LEDEB)

Only one species of Siberian spruce (Picea obovata Ledeb) is distributed in Mongolia. It is a coniferous tree that forms a forest in a limited area, resembling a ridge-like strip along the border of the Larch and Siberian pine forests. Siberian spruce seeds are oval-boat-shaped, measuring 3.89 mm in length and 2.03 mm in width. A thousand seeds weigh 4.3 g and have a black-brown or brown-brown color with a smooth surface. At a temperature of +20°C in the laboratory thermostat, seed germination reaches 77%, with a growth rate of 6.9 days and a growth uniformity of 2.6 seeds. Conversely, at +25°C, seed germination decreases to 51%, with a growth rate of 7.68 days and a growth uniformity of 1.9 seeds. At room temperature of +22°C, the average germination rate was 19%, with a growth period of 14.5 days and a growth rate of 2.25 seeds per day.