• Journal of the Korean Wood Science and Technology
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• 제51권3호
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• pp.222-237
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• 2023

Eucalyptus pellita is one of the fast-growing tree species and has become predominant in Indonesian forest plantations. Meanwhile, tree breeding programs with clone development are the best way to provide greater genetic advantages. A better understanding of genetic control on growth and basic density in E. pellita is important for increasing wood productivity and quality. In this study, growth characteristics (tree height, diameter, and volume), basic density and its genetic parameters (heritability, genetic gain and genetic correlation) were determined. The number of clones tested in both trials was 50, divided into 5 blocks, and 5 trees/plot. The results showed that there were significant differences in growth and basic density among clones. There was an interaction between genetics and the environment further indicating the existence of unstable clones. The high heritability was found in tree height (0.82-0.86), diameter (0.82-0.90), and basic density (0.91-0.93). This implies that E. pellita has good opportunities for genetic improvement to increase wood productivity and quality. In addition, the results of genetic correlations among growth characteristics (height, diameter, and volume) and basic density showed positive moderate to highly significant value. It is suggested that these characters may be used to the advantage of the breeder for bringing improvement in these traits simultaneously. Therefore, this study provides important information of the genetic improvement of wood quality in E. pellita in Indonesia.

• 한국산림과학회지
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• 제83권4호
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• pp.480-485
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• 1994

전나무 수형목(秀型木) 풍매차대(風媒次代) 16년생(年生) 38가계(家系)에 대한 수고(樹高)와 흉고직경(胸高直徑)의 생장특성(生長特性)과 목재비중(木材比重), 가도관(假導管)의 길이 및 폭에 대한 재질특성(材質特性) 및 유전력(遺傳力)은 다음과 같다. 1) 생장(生長) 및 재질특성(材質特性)에 있어서 가장 우수(優秀)한 가계(家系)는 수고(樹高)에서 전북(全北) 4호(號)(498.2cm) 및 경기(京畿) 9호(號)(485.7cm), 흉고직경(胸高直徑)에서 경기(京畿) 12호(號)(9.2cm), 9호(號)(9.1cm), 비중(比重)에서 경북(慶北) 2호(號)(0.480) 및 강원(江原) 7호(號)(0.473), 가도관장(假導管長)에서 경기(京畿) 9호(號)(2.77mm) 및 강원(江原) 11호(號)(2.71mm), 가도관폭에서 경기(京畿) 9호(號)(0.039mm) 및 강원(江原) 11, 12호(號) 경기(京畿) 7호(號)(0.036mm)로 각각(各各) 나타났다. 2) 수고(樹高) 및 목재비중(木材比重)은 가계간(家系間)에 1%~5% 수준(水準)의 유의차(有意差)가 인정(認定)되었다. 3) 각 특성간(特性間)의 상관분석(相關分析)에서 목재비중(木材比重)은 수고(樹高), 흉고직경(胸高直徑), 가도관(假導管)의 길이 및 폭과 1% 수준(水準)의 부(負)의 유의상관(有意相關)을 나타냈다($r=-0.242^{**}{\sim}-0.635^{**}$). 4) 각 특성별(特性別) 유전력(遺傳力)은 수고(樹高)는 0.55, 흉고직경(胸高直徑)은 0.25, 목재비중(木材比重)은 0.44, 가도관폭(假導管幅)은 0.24로 추정(推定)되었다.