Variation and genetic parameters of axial resin canal features in clones and families of Pinus radiata (2021)
Type of ContentJournal Article
PublisherSpringer Science and Business Media LLC
Resin canal features are associated with significant economic losses to appearance grade Pinus radiata timber. This study investigated the variation in resin canal features for young, 2-year-old, P. radiata. Axial resin canal size, density and relative cross-sectional area were determined in twenty families and ten clones from images of microtomed sections, scanned with polarised light to highlight resin canals. Axial resin canal size was generally homogenous with a mean value estimate of 0.02 mm2, and a coefficient of variation of ~10%. Estimated mean values for axial resin canal density and relative area were more variable (coefficients of variation ~30%) and lower for clones (0.69 canals/mm2 and 1.13%, respectively) than for families (0.90 canals/mm2 and 1.53%, respectively). Narrow-sense heritability (h2) estimates of the studied axial resin canal features in radiata pine at age 2-years-old were ~0.30. Modulus of elasticity (MoE) and longitudinal shrinkage were moderately correlated with axial resin canal density and relative area, while basic density and volumetric shrinkage were independent of axial resin canal features. The study indicated that there could be potential for breeding P. radiata for resin canal features, with the aim to improve the grade yields of appearance grade products.
CitationGovina JK, Apiolaza LA, Altaner CM Variation and genetic parameters of axial resin canal features in clones and families of Pinus radiata. New Forests.
This citation is automatically generated and may be unreliable. Use as a guide only.
KeywordsAppearance grade; heritability; radiata pine; stiffness; wood defect
ANZSRC Fields of Research30 - Agricultural, veterinary and food sciences::3007 - Forestry sciences::300709 - Tree improvement (incl. selection and breeding)
Showing items related by title, author, creator and subject.
Evison, D.C.; Apiolaza L.A. (University of Canterbury. School of Forestry, 2015)This article introduces the concept of “robust selection”, which proposes tree selection based on the stochastic simulation of economic values to account for the inherent uncertainty of economic weights used in tree selection ...
Improvement of non-key traits in radiata pine breeding programme when long-term economic importance is uncertain Li Y; Dungey H; Yanchuck A; Apiolaza LA (2017)Diameter at breast height (DBH), wood density (DEN) and predicted modulus of elasticity (PME) are considered as 'key traits' (KT) in the improvement in radiata pine breeding programmes in New Zealand. Any other traits which ...
Properties of rotary peeled veneer and laminated veneer lumber (LVL) from New Zealand grown Eucalyptus globoidea Altaner CM; Guo F (2018)Background: Eucalyptus species can be alternative plantation species to Pinus radiata D.Don (radiata pine) for New Zealand. One promising high value use for eucalypts is laminated veneer lumber (LVL) due to their fast ...