The genetic variation coefficient and phenotypic coefficient of variation of each trait generally showed a decreasing trend with age (except the genetic variation coefficient of DBH), indicating that each trait gradually tends to be stable with age.
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Trunk distortion weakens the tree productivity revealed by half-sib progeny determination of Pinus yunnanensis.
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The sentences
The results of this study found that there is a highly significant positive correlation between each growth trait of P. yunnanensis .