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Forests 2017, 8(11), 409; doi:10.3390/f8110409

Genetic Variation, Heritability and Genotype × Environment Interactions of Resin Yield, Growth Traits and Morphologic Traits for Pinus elliottii at Three Progeny Trials

1
Key Laboratory of Silviculture, Co-Innovation Center of Jiangxi Typical Trees Cultivation and Utilization, College of Forestry, Jiangxi Agricultural University, Nanchang 330045, China
2
State Key Laboratory of Tree Genetics and Breeding, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China
3
Baiyun Mountain State Owned Forest Farm, Jian 343011, China
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Received: 26 July 2017 / Revised: 25 October 2017 / Accepted: 25 October 2017 / Published: 30 October 2017
(This article belongs to the Special Issue Genetics and Genomics of Forest Trees)
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Abstract

To better understand the genetic control of resin yield, growth traits and morphologic traits for Pinus elliottii families, genetic relationships among these traits were examined in three 27-year-old progeny trials located in Jingdezhen, Jian and Ganzhou, Jiangxi Province, China. In total, 3695 trees from 112 families were assessed at the three sites. Significant site, family and family × site effects were found for resin yield, growth traits and morphologic traits. Resin yield and growth traits were found to be under moderate genetic control for the three sites combined, with family heritability and individual narrow-sense heritability ranging from 0.41 to 0.55 and 0.11 to 0.27, respectively. The coefficient of genotypic variation (CVG) of stem volume (SV) and crown surface area (CSA) were higher than those of other traits at each site. Genetic correlation estimates indicated that selection for growth traits might lead to a large increment in resin yield (RY), and most morphologic traits had moderate to strong correlations with growth traits at each individual site. One possible strategy in tree breeding would be to maximize resin production through selection for growth traits. View Full-Text
Keywords: families; Pinus elliottii; resin yield; growth traits; morphologic traits; heritability; genotypic correlation families; Pinus elliottii; resin yield; growth traits; morphologic traits; heritability; genotypic correlation
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Lai, M.; Dong, L.; Yi, M.; Sun, S.; Zhang, Y.; Fu, L.; Xu, Z.; Lei, L.; Leng, C.; Zhang, L. Genetic Variation, Heritability and Genotype × Environment Interactions of Resin Yield, Growth Traits and Morphologic Traits for Pinus elliottii at Three Progeny Trials. Forests 2017, 8, 409.

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