Russian Federation
The results of a study of qualitative indicators (germination, energy, thousand-seed weight, and quality grade) are presented. The studies were conducted in stands of silver birch of various ages in forestry units of the Altai Krai and Novosibirsk Oblast. The studies showed that, depending on forest growth conditions, germination rates in the Altai Krai range from 1% to 83% and in the Novosibirsk Oblast from 1% to 78%. The Rakitovskoye forestry (ribbon-pine forest) in the Altai Krai has the highest germination rate and germination rates (44.3% x 48.6%), while the Suzunskoye forestry (Priobsky) in the Novosibirsk Oblast has 36.2% x 40.0%. The least variable characteristics are thousand-seed weight (average coefficients of variation across regions are 15.3-15.6%). The coefficients of variation for seed quality grades in Altai Krai (51-77%) and Novosibirsk Oblast (55-88%) are intermediate and rather unstable in terms of forest conditions. This is apparently due to differences in pollination efficiency in different forest conditions.
bereza, vskhozhest', kachestvo semyan, massa 1000 sht.
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