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Inheritance and Correlation Analysis of Pulpwood Properties, Wood Density, and Growth Traits of Slash Pine

Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Fuyang 311400, China
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Forests 2020, 11(5), 493; https://doi.org/10.3390/f11050493
Received: 30 March 2020 / Revised: 24 April 2020 / Accepted: 26 April 2020 / Published: 27 April 2020
(This article belongs to the Section Wood Science)
Slash pine (Pinus elliottii) is the most important and a fast-growing material that is used for industrial timber and pulp production. A breeding program of slash pine that aims to improve wood properties has been employed for the past decade. This study analysed the genetics and correlation of growth traits and wood properties of a total of 1059 individual plants from 49 families of P. elliottii. Heritability, family ranking, genetic gain, and the relationship between these traits were estimated. The results showed that there was a significant negative genetic correlation between the holocellulose and lignin content. The heritabilities of these four traits were ranked from 0.18 to 0.32. The chemical wood traits did not show a strong correlation with diameter at breast height (DBH) and wood density. However, it is still possible to combine wood traits for selection. It was suggested that the genetic breeding selection could improve the growth and quality of P. elliottii. View Full-Text
Keywords: P. elliottii; heritability; family ranking; pulpwood properties; wood density; DBH P. elliottii; heritability; family ranking; pulpwood properties; wood density; DBH
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Li, Y.; Ding, X.; Jiang, J.; Luan, Q. Inheritance and Correlation Analysis of Pulpwood Properties, Wood Density, and Growth Traits of Slash Pine. Forests 2020, 11, 493.

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