Genetic variation and inheritance of wood density in black spruce (Picea mariana) and its relationship with growth: implications for tree breeding
| العنوان: | Genetic variation and inheritance of wood density in black spruce (Picea mariana) and its relationship with growth: implications for tree breeding |
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| المؤلفون: | E. K. Morgenstern, S. Y. Zhang |
| المصدر: | Wood Science and Technology. 30:63-75 |
| بيانات النشر: | Springer Science and Business Media LLC, 1995. |
| سنة النشر: | 1995 |
| مصطلحات موضوعية: | Forestry, Plant Science, Biology, Genetic correlation, Black spruce, Industrial and Manufacturing Engineering, Agronomy, Genetic gain, Botany, Genetic variation, Tree breeding, General Materials Science, Genetic variability, Selection (genetic algorithm), Index selection |
| الوصف: | Based on 15-year-old spruce (Picea mariana) trees of 40 open-pollinated families grown in New Brunswick, this study examined the genetic variation and inheritance of wood density, and its relationship with growth trait (tree diameter, tree height and bole volume). Implications of these genetic parameters for wood quality improvement were discussed. Although wood density, earlywood density and latewood density show smaller phenotypic variation than growth traits, a larger part of the variation in these traits is due to families. These traits are under strong genetic control (hi2ranges from 0.60 to 0.86, and hf2ranges from 0.56 to 0.68). Wood density has a strong genetic correlation with earlywood density and latewood density (+0.72 and -0.73, respectively), but earlywood density and latewood density are strongly related to each other. As a result, wood density components have little value in improving the efficiency of selection for overall wood density. Overall wood density shows negative genetic correlations with growth traits (ranging from -0.34 to -0.41). To achieve optimal genetic gains, therefore, index selection for multiple traits is essential. This study reveals that selection for dry mass weight would result in remarkably higher genetic gain in gross fibre yield than selection for bole volume alone (+14.15% and +9.28%, respectively). Furthermore, selection for dry mass weight would result in less reduction in wood density, and while holding wood density at zero change, it is still possible to obtain huge genetic gain in gross fibre yield. |
| تدمد: | 1432-5225 0043-7719 |
| DOI: | 10.1007/bf00195269 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::e3c026b52c46ac522fc1b7311c460d9e https://doi.org/10.1007/bf00195269 |
| Rights: | CLOSED |
| رقم الانضمام: | edsair.doi...........e3c026b52c46ac522fc1b7311c460d9e |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 14325225 00437719 |
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| DOI: | 10.1007/bf00195269 |