Preliminary study on genetic variation of growth traits and wood properties and superior clones selection of Populus ussuriensis Kom.
Jiaojiao Jin, Xiyang Zhao, Huanzhen Liu, Sui Wang, Ziwen Song, Xiaoyu Ma, Kailong Li
iForest - Biogeosciences and Forestry, Volume 12, Issue 5, Pages 459-466 (2019)
doi: https://doi.org/10.3832/ifor2991-012
Published: Sep 29, 2019 - Copyright © 2019 SISEF
Research Articles
Abstract
In this study the genetic variation of growth traits and wood properties was assessed in 45 clones of Populus ussuriensis Kom. grown in a 10-year-old experimental forest located in Northeastern China and a preliminary selection of superior clones was performed based on multi-trait selection index. The following traits were analyzed: tree height, H; diameter at breast height, DBH; volume, V; basic wood density, BWD; fiber length, FL; fiber length-width ratio, FL/W; microfibril angle, MA; cell wall percentage, CWP; fiber double wall thickness, FWT; vessel proportion, VP; wood fiber proportion, FP; wood ray proportion, RP; holocellulose content, HC. The results revealed significant differences (P<0.05) in DBH, V, BWD, FWT, VP and FP among different clones. Broad-sense heritabilities for growth traits and wood properties ranged from 0.020 to 0.749, therefore growth traits and wood properties are moderately or weakly controlled. Negative correlations between growth traits and most wood properties were also found. According to the multi-trait selection index at a selected rate of 10% and survival rates, 3 superior clones (I18, H16, C13) were selected, and the DBH, V, BWD, FL and FP of superior clones were higher than those of all clones by 2.83%, 9.81%, 3.40%, 6.59% and 0.31%, the MA, FWT, VP were lower than those of all clones by 7.54%, 0.39%, 2.12%, respectively. These superior clones could be used as starting breeding material for P. ussuriensis.
Keywords
Populus ussuriensis Kom., Growth Traits, Wood Properties, Genetic Variation, Multi-trait Index Selection
Authors’ Info
Authors’ address
Xiyang Zhao
Huanzhen Liu
Sui Wang
Ziwen Song
Xiaoyu Ma
Kailong Li
State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, 150040 (China)
Corresponding author
Paper Info
Citation
Jin J, Zhao X, Liu H, Wang S, Song Z, Ma X, Li K (2019). Preliminary study on genetic variation of growth traits and wood properties and superior clones selection of Populus ussuriensis Kom.. iForest 12: 459-466. - doi: 10.3832/ifor2991-012
Academic Editor
Fulvio Ducci
Paper history
Received: Nov 14, 2018
Accepted: Jul 18, 2019
First online: Sep 29, 2019
Publication Date: Oct 31, 2019
Publication Time: 2.43 months
Copyright Information
© SISEF - The Italian Society of Silviculture and Forest Ecology 2019
Open Access
This article is distributed under the terms of the Creative Commons Attribution-Non Commercial 4.0 International (https://creativecommons.org/licenses/by-nc/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
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