Genetic and Environmental Effects Assessment in Scots Pine Provenances Planted in Central Siberia |
| |
Authors: | J V Savva E A Vaganov |
| |
Institution: | (1) Institute of Forest SB RAS, Akademgorodok, Krasnoyarsk, 660036, Russia |
| |
Abstract: | Scots pine provenance trials were established in 1964 in forest-steppe and in 1974 in southern taiga zones of Central Siberia
from seeds collected over whole Russia. Tree-ring characteristics (radial growth and density chronologies) from 12 and 16
provenances planted in those plantations were measured densitometrically. Tree-ring analysis revealed a retention of a genetically
fixed response to climatic factors proper to pines' origin. Trees from higher latitudes keep the orientation towards accelerated
growth at the beginning of a growing season, which is followed by a rapid transition to formation of latewood cells and deceleration
of growth earlier, than in medium-latitude trees. Main climatic factors controlling tree-rings formation differed slightly
between different provenances within plantations. Genetically fixed ability of the provenances are not great (less than 15%),
that proves high adaptability of pines to abrupt climatic change. Tree-ring formation of Scots pine provenances is mainly
determined by the environmental factors. |
| |
Keywords: | climate change dendrochronology dendroecology densitometry plantation provenance tree ring |
本文献已被 SpringerLink 等数据库收录! |
|