Early Field Performance and Genetic Variation of Dalbergia tonkinensis, a Valuable Rosewood in Vietnam

Dalbergia tonkinensis is being promoted in Vietnam for the future supply of prized wood furniture and chemical extraction. Expansion plantation area requires a reliable source quality seed. This study evaluates field performance progeny from mature mother trees natural forests urban environments. Trials were established Tan Son Doan Hung districts Phu Tho province assessed 3 years later. There significant differences growth survival between provenances. The best families reached heights >3.5 m came forest. number leaflets per leaf on was positively correlated with height (Ht) diameter at breast (Dbh) trial trees. individual heritabilities (ĥ2) Ht Dbh 0.39 0.49 Son, 0.33 0.48 Hung, respectively. coefficient additive variation (CVA) 36% 58% 23% 30% Interactions traits two trials strongly (R2 = 0.88 Ht, 0.90 Dbh). These results identify D. gene sources advantages early plantations. superior genetics can be used seed orchards, clonal propagation implementing breeding program.