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Lara Comar Riva, Marcela Aparecida de Moraes, José Cambuim, Daniele Fernanda Zulian, Luciane Missae Sato, Francieli Alves Caldeira, Alan Rodrigo Panosso and Mario Luiz Teixeira de Moraes

ARTICLE – Genetic control of wood quality of Myracrodruon urundeuva populations under anthropogenic disturbance

Abstract: Forest fragmentation in the Cerrado biome exposes the tree species
Myracrodruon urundeuva to the risk of extinction. Thus, the objective of the
study was to evaluate silvicultural characteristics related to wood quality, based
on genetic parameters estimated in two M. urundeuva progenies from natural
populations, assessed in Bauru-SP (PBAU) and Selvíria-MS (PSEL), 31 years after
planting. The genetic parameters were estimated according to the REML/BLUP
(Restricted maximum likelihood/Best Linear Unbiased Prediction) method using a
mixed linear model. The progeny tests detected genetic variation. In PSEL, more
positive genetic correlations and a greater number of clusters were observed.
Based on the heartwood/sapwood ratio, a higher genetic gain was predicted
for PBAU, and for the basic wood density, the genetic gain of the populations
was approximately the same. Consequently, the areas of the two progeny tests
may be used as future seed orchards to ensure wood quality and long-term ex
situ conservation.

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