Genotype × trial interaction and stability across sites in 11 combined provenance and clone experiments with Picea abies in Denmark and Sweden

2001 ◽  
Vol 31 (10) ◽  
pp. 1826-1836 ◽  
Author(s):  
Bo Karlsson ◽  
Hubert Wellendorf ◽  
Hans Roulund ◽  
Martin Werner
2001 ◽  
Vol 31 (10) ◽  
pp. 1826-1836 ◽  
Author(s):  
Bo Karlsson ◽  
Hubert Wellendorf ◽  
Hans Roulund ◽  
Martin Werner

In 1997, eleven combined Picea abies (L.) Karst. provenance and clone trials were assessed in two series, with identical genetic constitution and design, in locations ranging from western Denmark to central Sweden, after 14 and 11 years, respectively. The phenotypic variation was larger for mixtures of 24 clones than for seedlings in one series, although 10 times more genotypes were represented amongst the seedlings. This was explained by random C-effects due to propagation. Provenances of seedlings and clone mixtures were fairly stable across sites. Statistically significant clone × trial interaction of growth traits were of the same magnitude as the clonal effects. The median genotypic correlation across sites for total height growth was 0.54. Ecovalence values for growth indicated that most clones contributed about equally to the interaction, with a tendency for clones with early bud break to give a larger contribution. Damage caused by late spring frost was assumed to be a main cause of genotype × environment interaction. Since interactions relatively were more pronounced for growth increment than for the latest height, the interaction seems to increase with age. Cluster analysis based on genotypic correlations between pairs of trials gave a very scattered geographic pattern of the test sites. The results did not justify any suggestions for changes in the P. abies breeding strategy.


2003 ◽  
Vol 18 (3) ◽  
pp. 237-246 ◽  
Author(s):  
Aksel Granhus ◽  
Finn H. Brække ◽  
Kjersti Holt Hanssen ◽  
Oddvar Haveraaen
Keyword(s):  

1991 ◽  
Vol 82 (2) ◽  
pp. 219-224 ◽  
Author(s):  
Barbro S. M. Ingemarsson ◽  
Leif Eklund ◽  
Lennart Eliasson

1997 ◽  
Vol 101 (4) ◽  
pp. 764-769 ◽  
Author(s):  
Heike Stoermer ◽  
Bettina Seith ◽  
Ulrike Hanemann ◽  
Eckhard George ◽  
Heinz Rennenberg

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