Growth of Seedlings of Siberian Stone Pine in Tree Breeding of Different Reproduction Types

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UDС

630*631.53.01

DOI:

10.17238/issn0536-1036.2018.1.29

Abstract

Hereditary-caused energy of growth is manifested already in the early stages of ontogeny in Siberian stone pine. This can significantly effect on the shape structure and yield of future generations of introductory crops. The investigations are conducted in order to study the growth peculiarities of Siberian stone pine seedlings, depending on the variability of maternal plants according to the reproduction type. Seed samples of Siberian stone pine trees of different morphological forms are selected in one of the oldest plantations in the Vologda region – the nature monument “Chagrinskaya cedar grove”. Harvested seeds after preliminary stratification are sown next spring in open ground separately according to families. The results of the research indicate that by the age of four years the offspring of the mixed reproduction type reach larger dimensions along the height of a stipitate – (11.5±0.2) cm. Seedlings in the female offspring differ in the lowest height (of 9.4±0.3) cm. We have not identified significant differences in length of needles in offspring of reproduction types. The seedlings in the offspring of female morphological forms have less stipitate and roots mass as well as total phytomass in comparison with offspring of mixed types. The authors conclude that mass selection of seedlings according to their size in nursery forests is unpractical, since it leads to a decrease in participation of offspring of the female type, valuable for seed production. The selection of maternal producers by the seedling growth results (in crops by tree families), taking into account their shape identity, excluding discrimination of one or another form, is possible.

Authors

N.A. Babich¹, Doctor of Agricultural Sciences, Professor
R.S. Khamitov², Doctor of Agricultural Sciences, Associate Professor

Affiliation

¹Northern (Arctic) Federal University named after M.V. Lomonosov, Naberezhnaya Severnoy Dviny, 17, Arkhangelsk, 163002, Russian Federation; е-mail: n.babich@narfu.ru
²Vologda State Dairy Farming Academy named after N.V. Vereshchagin, ul. Shmidta, 2, Molochnoe, Vologda, 160555, Russian Federation; e-mail: r.s.khamitov@mail.ru

Keywords

Siberian stone pine, introduction, selection, reproduction type, seedling

For citation

Babich N.A., Khamitov R.S. Growth of Seedlings of Siberian Stone Pine in Tree Breeding of Different Reproduction Types. Lesnoy zhurnal [Forestry journal], 2018, no. 1, pp. 29–36. DOI: 10.17238/issn0536-1036.2018.1.29

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Received on September 19, 2017