Patterns of genetic variation in bud flushing of Abies alba populations
Georgeta Mihai (1) , Ionel Mirancea (1), Marius-Victor Birsan (2), Alexandru Dumitrescu (2)
iForest - Biogeosciences and Forestry, Volume 11, Issue 2, Pages 284-290 (2018)
doi: https://doi.org/10.3832/ifor2314-011
Published: Apr 13, 2018 - Copyright © 2018 SISEF
Research Articles
Abstract
In the spring of 2007, 51 full-sib and six half-sib families of European silver fir were obtained through controlled and open pollinations from the same clones in a seed orchard. Genetic variation and parameters for bud flushing were determined in two progeny tests established in a nursery. The results indicate a high genetic control of bud flushing of European silver fir. Both the additive and the dominance genetic variances were major sources of genetic variation. The additive genetic variance was greater for open-pollinated than for full-sib progeny, representing 50-95% of phenotypic variance. Narrow-sense individual heritability estimates for control-pollinated progenies ranged from 0.14 to 0.64, while the full-sib family heritability ranged from 0.09 to 0.40. In the open-pollinated progenies, the values of individual and family heritability were higher than those in control-pollinated progeny and ranged from 0.50 to 0.95 for both. In both experiments, genetic parameters were higher for bud flushing at the beginning of the growing period than at later stages. The genetic correlations between bud phenology and growth traits were positive and significant in control-pollinated progeny but not significant in open-pollinated progeny. Positive significant correlations between control-pollinated and open-pollinated progeny showed a maternal effect. Bud flushing was negatively correlated with geographic and climatic parameters of the site of parents’ origin, accounting for 83-97% of the total variation of this adaptive trait.
Keywords
Bud Flushing, Climatic Parameters, Correlations, Genetic Parameters, Genetic Variation, Silver Fir
Authors’ Info
Authors’ address
Ionel Mirancea
Marin Dracea National Institute for Research and Development in Forestry, Department of Forest Genetics and Tree Breeding. Bulevardul Eroilor nr. 128, Voluntari, Ilfov (Romania)
Alexandru Dumitrescu
Meteo Romania - National Meteorological Administration, Department of Climatology, Sos Bucuresti-Ploiesti 97, 013686 Bucharest (Romania)
Corresponding author
Paper Info
Citation
Mihai G, Mirancea I, Birsan M-V, Dumitrescu A (2018). Patterns of genetic variation in bud flushing of Abies alba populations. iForest 11: 284-290. - doi: 10.3832/ifor2314-011
Academic Editor
Mike Perks
Paper history
Received: Dec 14, 2016
Accepted: Jan 13, 2018
First online: Apr 13, 2018
Publication Date: Apr 30, 2018
Publication Time: 3.00 months
Copyright Information
© SISEF - The Italian Society of Silviculture and Forest Ecology 2018
Open Access
This article is distributed under the terms of the Creative Commons Attribution-Non Commercial 4.0 International (https://creativecommons.org/licenses/by-nc/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
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