Home – Home – Jornals – Contemporary Problems of Ecology 2007 number 1

Seeding qualities and content of general and protein nitrogen in the seeds of Siberian spruce (Picea obovata Ledeb.), pine (Pinus sylvestris L.), Siberian larch (Larix sibirica L.) and Gmelin larch (Larix gmelinii Rupr.) from different regions of East Siberia were determined. It was revealed that the seeds of pine contain the highest level of total and protein nitrogen; the same seeds demonstrated the best seeding properties. A high correlation was found between the potential germination of the seeds of conifers under investigation and total nitrogen content in them. It was shown that the seeding qualities of the seeds and their nitrogen content vary depending on the region of seed collecting and exhibit an essential correlation with the mean July temperature in the regions and with the length of vegetative season.