Genetic variation and parental performance under inbreeding for growth in Eucalyptus globulus

Silva, Jce, Hardner, C and Potts, BM (2010) Genetic variation and parental performance under inbreeding for growth in Eucalyptus globulus. Annals of Forest Science, 67 6: 606-1-606-8. doi:10.1051/forest/2010019

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Author Silva, Jce
Hardner, C
Potts, BM
Title Genetic variation and parental performance under inbreeding for growth in Eucalyptus globulus
Formatted title
Genetic variation and parental performance under inbreeding for growth in Eucalyptus globulus
Journal name Annals of Forest Science   Check publisher's open access policy
ISSN 1286-4560
1297-966X
Publication date 2010-09-01
Sub-type Article (original research)
DOI 10.1051/forest/2010019
Open Access Status Not Open Access
Volume 67
Issue 6
Start page 606-1
End page 606-8
Total pages 8
Place of publication Paris, France
Publisher Springer France
Language eng
Formatted abstract
• We aimed to better understand the genetic architecture of growth in E. globulus undergoing inbreeding by comparing families from selfing (SELF), open pollination (OP) and unrelated polymix crossing (POL) of common parents. Stem diameter at breast height (DBH) was assessed at 4, 6 and 10 years after planting in a field trial.

• The OP heritability was overestimated at an early age relative to the POL heritability.

• No significant correlations were found between the SELF and POL parental effects, indicating substantial non-additive genetic variation under inbreeding. The OP family effects were better correlated with the SELF than the POL population, and only at age 10 years, after substantial mortality of inbred progeny has occurred, was the positive correlation between OP and POL families significantly different from zero.

• The estimated dominance variance arising from inbreeding was nearly 10-fold greater than the dominance variance associated with random mating and the additive variance, and appeared to be a major contributor to the variation in inbreeding depression amongst selfed families.
© INRA, EDP Sciences, 2010
Keyword Eucalyptus globulus
Self-fertilization
Mixed mating
Inbreeding depression
Genetic variance
Heritability
Breeding value
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2011 Collection
School of Agriculture and Food Sciences
 
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Citation counts: TR Web of Science Citation Count  Cited 11 times in Thomson Reuters Web of Science Article | Citations
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Created: Mon, 14 Mar 2011, 21:02:42 EST by Dr Craig Hardner on behalf of School of Land, Crop and Food Sciences