QUALITY OF TRUNKS OF KINDS AND CLIMATYPES LARCHES IN GEOGRAPHICAL CULTURES OF EAST TRANSBAIKALIA

QUALITY OF TRUNKS OF KINDS AND CLIMATYPES LARCHES IN GEOGRAPHICAL CULTURES OF EAST TRANSBAIKALIA

Makarov V.P.

Institute of natural resources, ecologies and criology the Siberian Branch of the Russian Academy of Science, Russia

vladimirmakarv@rambler.ru

Research of geographical cultures of a larch are carried out in the Chita area since 1975. In the populations of a different geographical origin growing in similar conditions of culture, various hereditary properties of plants, including on quality of a stem were showed.

For an estimation of quality of stem all trees on the registration areas have divided into straight lines single-stems, direct double-barrelled, poorly curved о single-stems, poorly curved double-barrelled, is strong and repeatedly curved. Occurrence of such trees have defined in percentage.

The greatest quantity of trees with a direct trunk, more than 50 %, is marked in populations of larch Gmelin from the Chita timber enterprise (64 %) and l. Sukachyov from It new - Lajlinsk timber enterprise of Sverdlovsk area (56 %). The low quantity of straight-stemmed trunks is in a population л. The Siberian Khakassia from October timber enterprise (4 %). In others climatypes this parameter changes from 28 up to 44 % (table).

The representation of plants with double-barrelled trunks (straight lines and be rather weak) in populations is in limits from 0 up to 6 %.

The greatest occurrence in geographical cultures of plants with be rather weak trunks, from 34 up to 78 %.

The maximum of strongly curved trunks, more than 10 %, is found out in populations л. The Siberian Khakassia from October timber enterprise (18 %), l. Gmelin from Svobodnyj timber enterprise of the Amur area (12 %), л. Siberian from Kaczug timber enterprise of Irkutsk area (12 %) and Czemal timber enterprise of republic Altai (11 %).

Thus, climatypes larches of a different geographical origin in similar conditions of growth and development have shown significant distinctions to such important selection and economic attribute as quality of a trunk.