Expression of some growth and wood property traits among Eucalyptus urophylla x grandis clones in Congo
Ar experiment concerning a clonal test of E. urophylla*grandis was carried out in Congo and presented the following results. The study of variation along the stem showed that basic density decreased sharply from the base to 1.3 m and then increased as the sampling height increased. Consequently, the best prediction of the mean tree basic density was obtained with disks taken at 25 or 50% of the commercial height. A different result was obtained for the mean tree bark percentage which was correctly predicted with 3 samples. Genetic analysis indicated a higher heritability for basic density and low genetic correlations with volume, confirming results obtained from breeding populations of E. urophylla*grandis. Results relating to the method of sampling and selection strategy are discussed in this paper.
| Main Authors: | , |
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| Format: | conference_item biblioteca |
| Language: | eng |
| Published: |
CRCTHF
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| Subjects: | F30 - Génétique et amélioration des plantes, K10 - Production forestière, Eucalyptus urophylla, variation génétique, expérimentation, croissance, propriété physicochimique, clone, densité, bois, héritabilité, amélioration des plantes, http://aims.fao.org/aos/agrovoc/c_26492, http://aims.fao.org/aos/agrovoc/c_15975, http://aims.fao.org/aos/agrovoc/c_2758, http://aims.fao.org/aos/agrovoc/c_3394, http://aims.fao.org/aos/agrovoc/c_1521, http://aims.fao.org/aos/agrovoc/c_1678, http://aims.fao.org/aos/agrovoc/c_2186, http://aims.fao.org/aos/agrovoc/c_8421, http://aims.fao.org/aos/agrovoc/c_3570, http://aims.fao.org/aos/agrovoc/c_5956, http://aims.fao.org/aos/agrovoc/c_1811, |
| Online Access: | http://agritrop.cirad.fr/537263/ http://agritrop.cirad.fr/537263/1/document_537263.pdf |
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