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CC BY V4.0, Open Access
Journal article
Early field performance and genetic variation of Dalbergia tonkinensis, a valuable Rosewood in Vietnam
Forests, Vol.13(12), Art. 1977
2022
Abstract
Dalbergia tonkinensis is being promoted in Vietnam for the future supply of prized wood for furniture and chemical extraction. Expansion of the plantation area requires a reliable source of quality seed. This study evaluates the field performance of progeny from mature mother trees in natural forests and urban environments. Trials were established in Tan Son and Doan Hung districts of Phu Tho province and assessed 3 years later. There were significant differences in growth and survival between provenances. The best families reached heights of >3.5 m and came from mother trees in a natural forest. The number of leaflets per leaf on mother trees was positively correlated with height (Ht) and diameter at breast height (Dbh) of the trial trees. The individual heritabilities (h(2)) for Ht and Dbh were 0.39 and 0.49 for Tan Son, and 0.33 and 0.48 for Doan Hung, respectively. The coefficient of additive variation (CVA) of Ht and Dbh were 36% and 58% for Tan Son, and 23% and 30% for Doan Hung, respectively. Interactions between the growth traits in the two trials were strongly correlated (R-2 = 0.88 for Ht, 0.90 for Dbh). These results identify D. tonkinensis gene sources with advantages for early growth performance in plantations. These superior genetics can be used for seed orchards, clonal propagation and for implementing a breeding program.
Details
- Title
- Early field performance and genetic variation of Dalbergia tonkinensis, a valuable Rosewood in Vietnam
- Authors/Creators
- Bernard Dell - Vietnamese Acad Forest Sci, Forest Protect Res Ctr, Hanoi 11910, VietnamPham Quang Thu - Vietnamese Acad Forest Sci, Forest Protect Res Ctr, Hanoi 11910, VietnamNguyen Hoang Nghia - VietnamPhi Hong Hai - VietnamNong Phuong Nhung - Vietnamese Acad Forest Sci, Post Grad Training & Int Cooperat Dept, Hanoi 11910, VietnamNguyen Minh Chi - Vietnamese Acad Forest Sci, Forest Protect Res Ctr, Hanoi 11910, Vietnam
- Publication Details
- Forests, Vol.13(12), Art. 1977
- Publisher
- MDPI
- Number of pages
- 12
- Identifiers
- 991005564670207891
- Copyright
- © 2022 by the authors.
- Murdoch Affiliation
- School of Agricultural Sciences
- Language
- English
- Resource Type
- Journal article
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