: материалы временных коллективов / G. V. Kuznetsova // Eurasian Journal of Forest Research. - 2008. - Vol. 11-2. - С. 81-87. - Библиогр. в конце ст.
Аннотация: Experiments in intraspecific hybridization of Siberian stone pine, not just of this species but of different regional origins as well, have been carried out at a clone plantation in Middle Siberia (Krasnoyars forest-steppe). Crossings were realized using the principle of ecologo-geographical remoteness of populations. Siberian stone pine clones chosen for crossing had good growth and constant reproductive ability over many years. An analysis of the characteristics of hybrid female cones (weight, linear size, number of developed scales) and seeds (number, weight, seed fullness, viability) showed the positive influence of controlled pollination with combinations of different climatypes. The study of hybrid growing climatypes, resulting from crossing of the plain and mountain populations, also revealed signs of heterosis.
Держатели документа:
Институт леса им. В.Н. Сукачева Сибирского отделения Российской академии наук : 660036, Красноярск, Академгородок, 50, стр., 28
Доп.точки доступа:
Кузнецова, Галина Васильевна
Труды сотрудников ИЛ им. В.Н. Сукачева СО РАН
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Найдено документов в текущей БД: 2
Experiment of intraspecific hybridization of Siberian stone pine (Pinus Sibirica Du Tour) clones in Middle Siberia
The effect of individual genetic heterozygosity on general homeostasis, heterosis and resilience in Siberian larch (Larix sibirica Ledeb.) using dendrochronology and microsatellite loci genotyping
/ E. A. Babushkina [et al.] // Dendrochronologia. - 2016. - Vol. 38. - P26-37, DOI 10.1016/j.dendro.2016.02.005
. - ISSN 1125-7865
Кл.слова (ненормированные):
Climate change -- Dendrochronology -- Environmental stress -- Heterosis -- Homeostasis -- Individual heterozygosity -- Microsatellite markers -- Radial growth -- Tree ring width -- Larix -- Larix sibirica
Аннотация: The genetic mechanisms underlying the relationship of individual heterozygosity (IndHet) with heterosis and homeostasis are not fully understood. Such an understanding, however, would have enormous value as it could be used to identify trees better adapted to environmental stress. Dendrochronology data, in particular the individual average radial increment growth of wood measured as the average tree ring width (AvTRW) and the variance of tree ring width (VarTRW) were used as proxies for heterosis (growth rate measured as AvTRW) and homeostasis (stability of the radial growth of individual trees measured as VarTRW), respectively. These traits were then used to test the hypothesis that IndHet can be used to predict heterosis and homeostasis of individual trees. Wood core and needle samples were collected from 100 trees of Siberian larch (Larix sibirica Ledeb.) across two populations located in Eastern Siberia. DNA samples were obtained from the needles of each individual tree and genotyped for eight highly polymorphic microsatellite loci. Then mean IndHet calculated based on the genotypes of eight loci for each tree was correlated with the statistical characteristics of the measured radial growth (AvTRW and VarTRW) and the individual standardized chronologies. The analysis did not reveal significant relationships between the studied parameters. In order to account for the strong dependence of the radial growth on tree age the age curves were examined. An original approach was employed to sort trees into groups based on the distance between these age curves. No relationship was found between these groups and the groups formed based on heterozygosity. However, further work with more genetic markers and increased sample sizes is needed to test this novel approach for estimating heterosis and homeostasis. © 2016 Elsevier GmbH.
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Держатели документа:
Khakasia Technical Institute, Siberian Federal University, 27 Shchetinkina St., Abakan, Russian Federation
Siberian Federal University, Pr. Svobodniy 79, Krasnoyarsk, Russian Federation
V.N. Sukachev Institute of Forest, Siberian Branch, Russian Academy of Sciences, Akademgorodok, 50/28, Krasnoyarsk, Russian Federation
Georg-August-University of Gottingen, Busgenweg 2, Gottingen, Germany
N.I. Vavilov Institute of General Genetics, Russian Academy of Sciences, 3 Gubkina St., Moscow, Russian Federation
Texas AandM University, College Station, TX, United States
Institute of Geography, Russian Academy of Sciences, 29 Staromonetniy Pereulok, Moscow, Russian Federation
Доп.точки доступа:
Babushkina, E. A.; Vaganov, E. A.; Grachev, A. M.; Oreshkova, N. V.; Belokopytova, L. V.; Kostyakova, T. V.; Krutovsky, K. V.
Кл.слова (ненормированные):
Climate change -- Dendrochronology -- Environmental stress -- Heterosis -- Homeostasis -- Individual heterozygosity -- Microsatellite markers -- Radial growth -- Tree ring width -- Larix -- Larix sibirica
Аннотация: The genetic mechanisms underlying the relationship of individual heterozygosity (IndHet) with heterosis and homeostasis are not fully understood. Such an understanding, however, would have enormous value as it could be used to identify trees better adapted to environmental stress. Dendrochronology data, in particular the individual average radial increment growth of wood measured as the average tree ring width (AvTRW) and the variance of tree ring width (VarTRW) were used as proxies for heterosis (growth rate measured as AvTRW) and homeostasis (stability of the radial growth of individual trees measured as VarTRW), respectively. These traits were then used to test the hypothesis that IndHet can be used to predict heterosis and homeostasis of individual trees. Wood core and needle samples were collected from 100 trees of Siberian larch (Larix sibirica Ledeb.) across two populations located in Eastern Siberia. DNA samples were obtained from the needles of each individual tree and genotyped for eight highly polymorphic microsatellite loci. Then mean IndHet calculated based on the genotypes of eight loci for each tree was correlated with the statistical characteristics of the measured radial growth (AvTRW and VarTRW) and the individual standardized chronologies. The analysis did not reveal significant relationships between the studied parameters. In order to account for the strong dependence of the radial growth on tree age the age curves were examined. An original approach was employed to sort trees into groups based on the distance between these age curves. No relationship was found between these groups and the groups formed based on heterozygosity. However, further work with more genetic markers and increased sample sizes is needed to test this novel approach for estimating heterosis and homeostasis. © 2016 Elsevier GmbH.
Scopus,
WOS,
Смотреть статью
Держатели документа:
Khakasia Technical Institute, Siberian Federal University, 27 Shchetinkina St., Abakan, Russian Federation
Siberian Federal University, Pr. Svobodniy 79, Krasnoyarsk, Russian Federation
V.N. Sukachev Institute of Forest, Siberian Branch, Russian Academy of Sciences, Akademgorodok, 50/28, Krasnoyarsk, Russian Federation
Georg-August-University of Gottingen, Busgenweg 2, Gottingen, Germany
N.I. Vavilov Institute of General Genetics, Russian Academy of Sciences, 3 Gubkina St., Moscow, Russian Federation
Texas AandM University, College Station, TX, United States
Institute of Geography, Russian Academy of Sciences, 29 Staromonetniy Pereulok, Moscow, Russian Federation
Доп.точки доступа:
Babushkina, E. A.; Vaganov, E. A.; Grachev, A. M.; Oreshkova, N. V.; Belokopytova, L. V.; Kostyakova, T. V.; Krutovsky, K. V.