Domestication of Radiata Pine

Abstract

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Adverse Genetic Correlations and Impacts of Silviculture Involving Wood Properties: Analysis of Issues for Radiata Pine

“…This paper is a review that is essentially an analysis of the issues, with the objective of providing pointers for further research and for practicing tree breeders and silviculturists. It is based above all on long and intimate experience with a species that has been the subject of much cutting-edge work in developing modern plantation forestry [7,8]. We consider the issues under the two main categories of intervention, first genetic improvement, and then silvicultural inputs, both as primarily means of improving productivity.…”

“…However, despite the scope for genetic improvement of wood properties, emphasis on their genetic improvement came relatively late compared with improvements in growth traits [29]. This resulted from a combination of factors [8,30], notably unwillingness of industry parties to accept sacrifice of potential gains in wood volume production when there are few if any current price signals in the market to warrant this, and the difficulties and costs of assay for some important wood properties. However, with a reduction in rotation age and aggressive thinning regimes, a general decline in wood properties became a major concern [29,31], while assays for wood properties have become much cheaper and more powerful [32,33], so in recent years tree breeders have sharply increased the emphasis on the genetic improvement of wood properties [8,34].…”

“…Table 3. General importance, status in breeding programme, and indicative information on variation and heritability for some individual traits in radiata pine (mainly after [8] Table 5.5, [20,37,38]). The selection index is by no means the only method for multi-trait selection [6] (pp.…”

“…and reducing rotation length [4,5]. The main interventions that can raise productivity fall into two broad categories, namely genetic improvement and silvicultural measures [6][7][8]. Genetic improvement involves selective breeding, delivery systems for genetic gain, and customised deployment of improved breeds or clones to sites and silvicultural regimes.…”

Forest-Scale Phenotyping: Productivity Characterisation Through Machine Learning

“…Increasing forest productivity whilst safeguarding forest health and sustainability will be critical to ensuring that this can be achieved (Sedjo and Botkin, 1997;Powers, 1999;Dash et al, 2019). Intensively managed forest systems such as the Southern hemisphere's Pinus radiata D.Don (radiata pine), and the South-Eastern USA's Pinus taeda L. (Loblolly pine) forests have been the subject of long-standing and detailed research programmes (Fox et al, 2007;Burdon et al, 2017). This research has helped to deliver improved productivity, profitability and helped to ensure wood fibre security.…”