Genetic correlations between growth and growth rhythm observed in a short-term test and performance in long-term field trials of Norway spruce

Hannerz, Mats; Sonesson, Johan; Ekberg, Inger

doi:10.1139/x99-056

Cited by 56 publications

(42 citation statements)

References 27 publications

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“…In Norway spruce, date for bud flushing was slightly negatively genetically correlated with 24-year field volume (SONESSON et al, 2002). In addition, in Norway spruce, different stages of bud flushing were slightly negatively correlated genetically with 9-14-year field height (HANNERZ et al, 1999). Thus, lack of strong greenhouse-field correlation observed in this study is consistent with what has been observed in other spruce trials.…”

Section: Greenhouse-field Correlationssupporting

confidence: 90%

Genetic Parameters for Bud Flushing and Growth Characteristics of White Spruce Seedlings

2010

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We estimated heritabilities and correlations for bud flushing and growth traits of white spruce seedlings, and the correlations of seedling traits with 10-and 11-year height of the same families in the field. The seedling greenhouse experiment had a randomized complete block design with 30 replications, 58 open-pollinated families and single-tree plots. Individual tree heritability (h i 2 ) was 0.78 and 0.54 for 18 (H18) and 36 (H36)-week total height, respectively. The corresponding heritabilities for family means (h f 2 ) were 0.91 and 0.82. For root collar diameter, h i 2 were respectively, 0.61 and 0.22 at 24 and 54 weeks from germination. The corresponding h f 2 were 0.87 and 0.55. Heritability for bud flushing ranged from 0.13 to 0.46 (h i 2 ) and 0.44 to 0.83 (h f 2 ). The genetic correlation (r a ) between H18 and H36 was 0.70 and that of D24 and D54 was 0.89, indicating a substantial change in family ranking in one growing season. The type B genetic correlation for H18 with field heights ranged from 0.22 to 0.30. Type B genetic correlations of field height with all other seedling traits were very low and largely negative. It can be concluded that: (1) age-age correlation of seedling height can be expected to decline drastically even in a stable environment of the greenhouse, (2) heritability for growth potential is meaningful when estimated on cumulative growth not on individual annual growth increments that are susceptible to short-term environmental variation, (3) dates of bud flushing did not influence variation in height and root collar diameter, and (4) field growth potential is better predicted by greenhouse growth potential than other morphological and shoot phenological traits.

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Section: Greenhouse-field Correlationssupporting

confidence: 90%

Genetic Parameters for Bud Flushing and Growth Characteristics of White Spruce Seedlings

2010

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“…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: 82%

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

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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“…For Norway spruce, a similar project is underway; however as a secondary tree species, growth rhythm is a particularly important factor for adaptation to a changed climate. Studies have shown that genotypes/provenances with early bud-burst are damaged if exposed to late spring frost events in southern Sweden, resulting in reduced vitality, quality and growth (e.g., [77,96]). In addition, it is predicted that the risk of frost damage to Norway spruce in southern Sweden will increase with climate change due to the earlier occurrence of bud burst in the spring when the nights are still long with a high risk of ground surface radiative cooling [97,98].…”

Section: Adaptations Beyond General Forest Management (In Tree Breedimentioning

confidence: 99%

Adaptation to Climate Change in Swedish Forestry

Keskitalo

Bergh

Felton³

et al. 2016

Forests

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Adaptation to climate change in forestry has become a growing concern, in part due to the impact of storms and other events that have raised the awareness of such risks amongst forest owners. Sweden is one of Europe's most densely-forested countries, with this sector playing a major role economically. However adaptation has, to a large extent, been limited to the provision of recommendations to forest managers, most of which have only been partially implemented. This paper summarizes research with direct implications for adaptation to climate change within the forestry sector in Sweden. The focus is based in particular on providing examples of adaptations that illustrate the specific Swedish orientation to adaptation, in line with its relatively intensive forest management system. The paper thus illustrates a specific Swedish orientation to adaptation through active management, which can be contrasted with approaches to adaptation in other forestry systems, in particular those with limited management or management based on maintaining natural forests in particular.

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Genetic correlations between growth and growth rhythm observed in a short-term test and performance in long-term field trials of Norway spruce

Cited by 56 publications

References 27 publications

Genetic Parameters for Bud Flushing and Growth Characteristics of White Spruce Seedlings

Genetic Parameters for Bud Flushing and Growth Characteristics of White Spruce Seedlings

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

Adaptation to Climate Change in Swedish Forestry

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