Abstract
Abstract Key message Genetic parameter estimates at age 12 years for trunk volume in Pinus pinaster displayed low to moderate heritability for growth and stem form, whereas wood properties showed high heritability. No correlation was detected between resistance to the nematode Bursaphelenchus xylophilus and growth, stem form, or wood properties. However, certain families stood out, showing favorable values across all traits, including resistance to the nematode. Context The breeding program for Pinus pinaster should advance towards a second-generation breeding population based on volume, stem form, and resistance to Bursaphelenchus xylophilus , with the challenge of incorporating novel traits of importance. Aims We focused on assessing the genetic parameters of growth, stem form, wood properties, and resistance to B. xylophilus as well as exploring the relationship between these traits. Methods We evaluated 116 half-sib families at three ages (7, 12, and 17 years) in seven progeny trials established in 2005, analyzing growth, stem form, and wood traits. Resistance to B. xylophilus was assessed in 91 of the 116 half-sib families at age 2 by artificial inoculation tests under greenhouse conditions. Results Advancing the selection age to 12 years proved to be feasible for volume selection in Galician P. pinaster . All traits, including resistance to B. xylophilus , showed potential for genetic improvement. Remarkably, resistance to B. xylophilus was not correlated to any other trait. Conclusion Excluding the most susceptible families to B. xylophilus from the Galician P. pinaster breeding program would not result in a significant decrease in volume, stem form, or wood properties.
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Claims 7
Claim · model-written summary
Growth and stem form had low to moderate heritability at 12 years.
- Taxon
- Pinus pinaster
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Pinus pinastere0 - Outcome
- heritability for growth and stem forme0
- Qualifier
- age 12 yearse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Genetic parameter estimates at age 12 years for trunk volume in Pinus pinaster displayed low to moderate heritability for growth and stem form”
Claim · model-written summary
Wood properties had high heritability.
- Taxon
- Pinus pinasterPinus pinastert0
- Outcome
- heritabilitye0
- Qualifier
- wood propertiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wood properties showed high heritability”
t0“Pinus pinaster”
Claim · model-written summary
Nematode resistance was uncorrelated with growth, stem form and wood properties.
- Taxon
- Pinus pinasterPinus pinastert0
- Interactor
- Bursaphelenchus xylophilus
Bursaphelenchus xylophiluse0pathogen - Outcome
- resistance to the nematode Bursaphelenchus xylophiluse0
- Qualifier
- growth, stem form, or wood propertiese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No correlation was detected between resistance to the nematode Bursaphelenchus xylophilus and growth, stem form, or wood properties”
t0“Pinus pinaster”
Claim · model-written summary
Some families showed favorable values across all traits, including nematode resistance.
- Taxon
- Pinus pinasterPinus pinastert0
- Material
- familiese0
- Outcome
- favorable values across all traits, including resistance to the nematodee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“certain families stood out, showing favorable values across all traits, including resistance to the nematode”
t0“Pinus pinaster”
Claim · model-written summary
Selection for volume at age 12 years was feasible.
- Taxon
- P. pinasterPinus pinastere0
- Outcome
- volume selectione0
- Value
- 12 yearse0
- Setting
- Galiciane0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Advancing the selection age to 12 years proved to be feasible for volume selection in Galician P. pinaster”
Claim · model-written summary
All traits including nematode resistance had potential for genetic improvement.
- Taxon
- Pinus pinasterPinus pinastert0
- Interactor
- B. xylophiluse0pathogen
- Outcome
- potential for genetic improvemente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All traits, including resistance to B. xylophilus , showed potential for genetic improvement”
t0“Pinus pinaster”
Claim · model-written summary
Excluding susceptible families would not significantly decrease volume, stem form or wood properties.
- Taxon
- P. pinasterPinus pinastere0
- Interactor
- B. xylophiluse0pathogen
- Outcome
- Excluding the most susceptible families to B. xylophiluse0
- Setting
- Galiciane0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Excluding the most susceptible families to B. xylophilus from the Galician P. pinaster breeding program would not result in a significant decrease in volume, stem form, or wood properties”