Genetic variation in heartwood properties and growth traits of Eucalyptus bosistoana
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Forty-one E. bosistoana families were evaluated for the production of heartwood quantity and quality in two sites. High estimated heritabilities of heartwood diameter (HWD) were found in both sites (0.66 and 0.71). The estimated heritabilities of extractives content (EC) were lower with 0.16 and 0.25. Weak genetic correlations between HWD and EC were found in one site, but highly negative (− 0.86) genetic correlations were observed in the other. The G × E interaction had no significant influence on growth traits but a small-level influence on the EC. Five families were selected for tree breeding as they produced both large HWD and high EC in both sites. It was suggested that genetic breeding selection could improve the heartwood quantity and quality of E. bosistoana plantations.
KeywordsExtractives Heritability Natural durability Near infrared reflectance (NIR) spectroscopy Tree breeding
We like to thank NZDFI for access to growth data. This work was supported by funding from the MBIE Partnership for Speciality Wood Products (contract FFRX1501).
Compliance with ethical standards
Conflict of interest
We declare no conflict of interest.
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