<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>The study aimed at estimating the genotype × environment (G × E) interaction, stability and plasticity parameters for height growth and survival of hybrid aspen (<italic>Populus tremula</italic> L. × <italic>Populus tremuloides</italic> Michx.) clones. A set of 17 hybrid aspen clones were studied at age four in 11 field trials (series 1) and a set of 12 clones were studied at age 12 in three field trials (series 2) in Sweden, Finland and north-west Russia. There was an intermediate and significant correlation between height ranks at four and 12 years, showing modest G × E interaction for tree height. The corresponding correlation for survival was weak and insignificant, indicating a stronger G × E interaction than for height. The stability parameter (<italic>S</italic>) for height showed large differences among clones. The plasticity index (<italic>PI</italic>) values for height ranged from 0.6 to 0.8 among clones, demonstrating high levels of phenotypic plasticity.</p></abstract>

The study aimed at estimating the genotype × environment (G × E) interaction, stability and plasticity parameters for height growth and survival of hybrid aspen (Populus tremula L. × Populus tremuloides Michx.) clones. A set of 17 hybrid aspen clones were studied at age four in 11 field trials (series 1) and a set of 12 clones were studied at age 12 in three field trials (series 2) in Sweden, Finland and north-west Russia. There was an intermediate and significant correlation between height ranks at four and 12 years, showing modest G × E interaction for tree height. The corresponding correlation for survival was weak and insignificant, indicating a stronger G × E interaction than for height. The stability parameter (S) for height showed large differences among clones. The plasticity index (PI) values for height ranged from 0.6 to 0.8 among clones, demonstrating high levels of phenotypic plasticity.

Plasticity and stability of hybrid aspen clones in 14 field trials over Sweden, Finland and north-west Russia

Folia Forestalia Polonica

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

The study aimed at estimating the genotype × environment (G × E) interaction, stability and plasticity parameters for height growth and survival of hybrid...

Trial	Name	Type of land	Planted year	Lat [Nº]	Long [Eº]	Alt [m]	Temp. [sum, d.d]
Swe 1	Sturup	agricultural	2010	56º34’	13º23’	120	1527
Swe 2	Malteröd	forest	2010	56º07’	13º37’	114	1501
Swe 3	Toftaholm	forest	2010	56º59’	14º03’	162	1405
Swe 4	Remningstorp	agricultural	2010	58º16’	13º22’	133	1359
Swe 5	Harg	agricultural	2010	60º05’	18º15’	29	1356
Swe 6	Karön	forest	2010	60º10’	18º13’	25	1347
Swe 7	Pommac	forest	2011	63º07’	17º27’	265	961
Swe 8	Ed	agricultural	2011	63º15’	17º14’	75	1124
Swe 9	Degerbyn	agricultural	2011	64º47’	20º49’	20	1086
Swe 10	Degerbyn	forest	2011	64º47’	20º49’	20	1086
Ru 1	Syktyvkar	agricultural	2010	61º39’	50º44’	157	1075
Fi 1	Sääksjärvi	agricultural	2002	60°36’	25°22’	70	1274
Fi 2	Sävträsk	agricultural	2002	60°32’	26°05’	35	1322
Fi 3	Laukonsaari	agricultural	2002	61°49’	29°20’	85	1235

Plasticity and stability of hybrid aspen clones in 14 field trials over Sweden, Finland and north-west Russia

Article Category: Short communication

Publié en ligne: 08 juin 2021

Pages: 176 - 182

Reçu: 10 févr. 2020

Accepté: 17 mars 2021

DOI: https://doi.org/10.2478/ffp-2021-0018

© 2021 Aleksey Fedorkov, Lars-Göran Stener, Pertti Pulkkinen, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Figure 1

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Figure 3

Description of the hybrid aspen field trials over Sweden (Swe), Finland (Fi) and north-west Russia (Ru) included in the study