Selection in a provenance trial of Norway spruce (Picea abiesL. Karst) produced a land race with desirable properties

Skrøppa, Tore; Steffenrem, Arne

doi:10.1080/02827581.2015.1081983

Cited by 19 publications

(42 citation statements)

References 13 publications

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Section: Discussionmentioning

confidence: 61%

“…However, the timing of flushing for the families should be quite similar at Nilsrud, as strong relationships generally are present between flushing scores at multiple sites (Skrøppa and Steffenrem 2015). The heritability is somewhat lower than the estimates found for flushing scores in other progeny tests (e. g. Hannerz et al 1999;Skrøppa and Steffenrem 2015). The observed genetic correlation between the timing of flushing and C. polonica lesion lengths corresponds to what was found by Krokene et al (2012) who concluded that the level of susceptibility to this pathogen is related to tree phenology.…”

Section: Discussionmentioning

confidence: 99%

“…Analyses were also made of tree heights and flushing scores in the trial at Hoxmark and of their relationship to the lesion lengths. A complete analysis of the shoot elongation measurements made in 1992 at Skiptvedt, based on all 100 families in the factorial, was made in Skrøppa and Steffenrem (2015), and their results for the 20 families will be used here in correlation studies.…”

Section: Methodsmentioning

confidence: 99%

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Genetic variation, inheritance patterns and parent–offspring relationships after artificial inoculations with Heterobasidion parviporum and Ceratocystis polonica in Norway spruce seed orchards and progeny tests

Skrøppa¹,

Solheim²,

Steffenrem³

2015

Silva Fenn.

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Genetic variation, inheritance patterns and parentoffspring relationships after artificial inoculations withHeterobasidion parviporum and Ceratocystis polonica in Norway spruce seed orchards and progeny tests Skrøppa T., Solheim H., Steffenrem A. (2015). Genetic variation, inheritance patterns and parent-offspring relationships after artificial inoculations with Heterobasidion parviporum and Ceratocystis polonica in Norway spruce seed orchards and progeny tests. Silva Fennica vol. 49 no. 1 article id 1191. 12 p. Highlights• Genetic variation is demonstrated in response to artificial inoculations with Heterobasidion parviporum and Ceratocystis polonica both between parents and their offspring.• Strong relationships are observed between the male parents and their off-spring, less so between the female parents and their offspring. AbstractInoculations with the two fungi Heterobasidion parviporum and Ceratocystis polonica were made in two series of progeny tests each containing full-sib families planted at two sites and on grafts of the parents in two seed orchards. Significant variation among families in lesion lengths after inoculation was found for both fungi and a predominantly additive inheritance was indicated. The estimates of narrow sense heritability were 0.13 and 0.22 for H. parviporum and C. polonica, respectively. The estimate of the genetic correlation between the lesion lengths of the two fungi was as low as 0.12. Significant variation in lesion lengths was also found among parental clones, and within ramets of the same clone, in the seed orchards. In one of the series a high positive correlation (r = 0.88) was found between the H. parviporum lesion lengths of the male parents and offspring, but not for the female parents and off-spring. The results confirm earlier conclusions that the genetic variation and heritabilities are large enough for practical breeding for resistance.

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Section: Discussionmentioning

confidence: 61%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Genetic variation, inheritance patterns and parent–offspring relationships after artificial inoculations with Heterobasidion parviporum and Ceratocystis polonica in Norway spruce seed orchards and progeny tests

Skrøppa¹,

Solheim²,

Steffenrem³

2015

Silva Fenn.

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“…Assessments of climate impacts on tree phenology are required for a range of theoretical and practical applications, including ecosystem modeling for mitigation and adaptation purposes and selection of suitable provenance at the timing of regeneration of forest stands (Migliavacca et al, 2012;Skrøppa & Steffenrem, 2016). A range of phenological models has been developed to capture temperature effects on the timing of budburst, differing in terms of model structure and complexity (Olsson & Jönsson, 2014).…”

Section: Discussionmentioning

confidence: 99%

“…However, as frost hardiness in spring is negatively related to growth activity (Westin, Sundblad, Strand, & Hällgren, 2000), an earlier onset of the growing season may increase the risks and severity of frost damage during late spring cold spells (Jönsson & Bärring, 2011). For commercially important species like Norway spruce, for which large differences in phenology traits exist among provenances, comprehensive cultivation research is carried out to identify traits favorable in a warmer climate (e.g., Skrøppa & Steffenrem, 2016;Westin et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

Trends and uncertainties in budburst projections of Norway spruce in Northern Europe

Olsson

Olin

Lindström

et al. 2017

Ecology and Evolution

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Budburst is regulated by temperature conditions, and a warming climate is associated with earlier budburst. A range of phenology models has been developed to assess climate change effects, and they tend to produce different results. This is mainly caused by different model representations of tree physiology processes, selection of observational data for model parameterization, and selection of climate model data to generate future projections. In this study, we applied (i) Bayesian inference to estimate model parameter values to address uncertainties associated with selection of observational data, (ii) selection of climate model data representative of a larger dataset, and (iii) ensembles modeling over multiple initial conditions, model classes, model parameterizations, and boundary conditions to generate future projections and uncertainty estimates. The ensemble projection indicated that the budburst of Norway spruce in northern Europe will on average take place 10.2 ± 3.7 days earlier in 2051–2080 than in 1971–2000, given climate conditions corresponding to RCP 8.5. Three provenances were assessed separately (one early and two late), and the projections indicated that the relationship among provenance will remain also in a warmer climate. Structurally complex models were more likely to fail predicting budburst for some combinations of site and year than simple models. However, they contributed to the overall picture of current understanding of climate impacts on tree phenology by capturing additional aspects of temperature response, for example, chilling. Model parameterizations based on single sites were more likely to result in model failure than parameterizations based on multiple sites, highlighting that the model parameterization is sensitive to initial conditions and may not perform well under other climate conditions, whether the change is due to a shift in space or over time. By addressing a range of uncertainties, this study showed that ensemble modeling provides a more robust impact assessment than would a single phenology model run.

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Tree, stand and site characteristics affecting the occurrence of lammas growth and multiple tops in field-grown Norway spruce

et al. 2018

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Selection in a provenance trial of Norway spruce (Picea abiesL. Karst) produced a land race with desirable properties

Cited by 19 publications

References 13 publications

Genetic variation, inheritance patterns and parent–offspring relationships after artificial inoculations with <i>Heterobasidion parviporum</i> and <i>Ceratocystis polonica</i> in Norway spruce seed orchards and progeny tests

Genetic variation, inheritance patterns and parent–offspring relationships after artificial inoculations with <i>Heterobasidion parviporum</i> and <i>Ceratocystis polonica</i> in Norway spruce seed orchards and progeny tests

Trends and uncertainties in budburst projections of Norway spruce in Northern Europe

Tree, stand and site characteristics affecting the occurrence of lammas growth and multiple tops in field-grown Norway spruce

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