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Siberian Journal of Forest Science

2016 year, number 6

RADIAL GROWTH AND PERCENT OF LATEWOOD IN SCOTS PINE PROVENANCE TRIALS IN WESTERN AND CENTRAL SIBERIA

S. R. Kuzmin1, R. V. Rogovtsev2
1Federal Research Center Krasnoyarsk Scientific Center, Russian Academy of Sciences Solitary Unit V. N. Sukachev Institute of Forest, Russian Academy of Sciences, Siberian Branch, Akademgorodok, 50/28, Krasnoyarsk, 660036 Russian Federation
2Russian Centre for Forest Protection, Centre for Forest Protection of Novosibirsk Oblast, Gogolya str., 221, Novosibirsk, 630015 Russian Federation
Keywords: географические культуры, сосна обыкновенная, радиальный рост, поздняя древесина, Новосибирская область, Красноярский край, provenance trial, Scots pine, radial growth, latewood, Novosibirsk Oblast, Krasnoyarsk Krai

Abstract

Percent of latewood of Boguchany and Suzun Scots pine climatypes has been studied in two provenance trials (place of origin and trial place). For Boguchany climatype the place of origin is south taiga of Central Siberia (Krasnoyarsk Krai), the place of trial is forest-steppe zone of Western Siberia (Novosibirsk Oblast) and vice versa for Suzun climatype - forest-steppe zone of Western Siberia is the place of origin, south taiga is the place of trial. Comparison of annual average values of latewood percent of Boguchany climatype in south taiga and forest-steppe revealed the same numbers - 19 %. Annual variability of this trait in south taiga is distinctly lower and equal to 17 %, in forest-steppe - 35 %. Average annual values of latewood percent of Suzun climatype in the place of origin and trial place are close (20 and 21 %). Variability of this trait for Suzun climatype is higher than for Boguchany and equal to 23 % in south taiga and 42 % in forest-steppe. Climatic conditions in southern taiga in Central Siberia in comparison with forest-steppe in Western Siberia make differences between climatypes stronger. Differences between climatypes are expressed in different age of maximal increments of diameter, different tree ring width and latewood percent values and in different latewood reaction to weather conditions.