Genetic variation in wood density and correlations with tree growth in Prosopis africana from Burkina Faso and Niger

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Table III

Phenotypic and genetic correlations between wood density and growth of Prosopis africana trees evaluated at 13 years in a provenance/progeny test in Niger^a^b .

Correlation type	Height	DBHOB	DBHUB
Phenotypic	0.38 (< 0.001)	0.36 (< 0.001)	0.34 (< 0.001)
Genetic	0.09 (0.36)	0.09 (0.41)	NE

Height = tree height; DBHOB and DBHUB = stem diameter at 1.3 m over bark and under bark, respectively; BD = wood basic density at 1.3 m.

Value in parenthesis = probability of Pearson r coefficient (N = 1060–1063 trees), and standard error of genetic correlation (N = 1060 trees, 253 families). NE = not estimated with DBHUB because variation due to families within provenances was not significant.