The Siberian linden is widely used in greening of cities and towns in Western Siberia. In the city of Novosibirsk this species was first planted in the 50s of the last century. Linden is planted along street ways, in gardens, parks and squares. In the 60s in the city there were more than 5000 linden trees aged ten years old and more (Hlonov, 1965). Still, in the following years planting of this species continued. At the same time, natural dying of trees took place. These plantings were practically not studied. This work is aimed at estimating of characteristics and seed productivity of the Siberian linden in the city of Novosibirsk, selection of the best trees for further research and selection according to decorative and viable parameters.

At present we study plantings of the linden trees on the territory of the dendropark of Siberian Department of Russian Academy of Agricultural Science in Bogdan Hmelnitsky Street. The work is carried out in several stages: 1) accumulation of data; 2) mapping of location of trees and estimation of average populational parameters; 3) selection and marking of trees with the best characteristics in flowering and fruiting, tall trunk and proliferate crone for further research.

It was found out that vegetation of linden in urban conditions starts in the second half of May. At the same period of time prefloration takes place. The linden flowers in the first and second decades of July. The fruits ripe in September, sometimes at the beginning of October and are left on trees in the urban area till January. In the dendropark area they are left till March.

The intensiveness of flowering and fruiting was estimated according to the five-grade scale. One thousand seeds were gathered from the best trees to estimate their mass, viability and ground germination.

According to the results, the mass of the linden seeds in the city of Novosibirsk makes about 23 – 28 grams. Among full-grained mature seeds the percentage of the viable is at least 90 % according to the state acknowledged standard 13056.7 – 93 (colouring of grains with indigocarmin). Estimation of ground germination of seeds will be carried out in spring and autumn periods.

Research is conducted with the financial support of “Altay-Forest” and Ltd. “Priobye”.

Note. Abstracts are published in author's edition