Assessing genetic diversity of Dalbergia stevensonii: an endangered species in Guatemala

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41340%2F24%3A100900" target="_blank" >RIV/60460709:41340/24:100900 - isvavai.cz</a>

Result on the web

<a href="https://www.revistabosque.org/index.php/bosque/article/view/1367" target="_blank" >https://www.revistabosque.org/index.php/bosque/article/view/1367</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4067/S0717-92002024000200233" target="_blank" >10.4067/S0717-92002024000200233</a>

Result language

angličtina

Original language name

Assessing genetic diversity of Dalbergia stevensonii: an endangered species in Guatemala

Original language description

Owing to extensive overexploitation and continuous habitat loss in recent decades, Dalbergia stevensonii has become endangered in Central America and its place of origin. Genetic diversity is essential for ensuring the long-term survival of the species and is vital in breeding programs. However, knowledge of the genetic diversity of D. stevensonii is limited, as no study has been conducted to estimate the population variability in Guatemala. This study is the first to determine the genetic diversity and structure of wild populations of D. stevensonii in Guatemala using molecular markers. The genetic diversity of 90 wild D. stevensonii trees from six populations located in their natural range is currently being evaluated. Genetic diversity was moderate, with an average of 5.83 alleles per locus, a mean Shannon index value of 1.42, and observed and expected heterozygosity of 0.32 and 0.37, respectively. AMOVA indicated that only 6 % of the genetic variation was between populations, and genetic distance values (pairwise FST) suggested moderate differentiation between populations. STRUCTURE and DAPC analyses revealed the existence of three clusters for the 90 samples, while the genetic differentiation among populations is attributed more to genetics than to geographic distance. Conservation of the genetic diversity of D. stevensonii is critical to ensure its long-term survival, and the success of breeding programs focused on improving the traits and characteristics of the species, such as growth rate, wood quality, and resistance to pests and diseases. These findings provide a crucial genetic basis for conservation, management, and restoration of this endemic species.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

40100 - Agriculture, Forestry, and Fisheries

Project

—

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Bosque

ISSN

0304-8799

e-ISSN

0304-8799

Volume of the periodical

45

Issue of the periodical within the volume

2

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

12

Pages from-to

233-244

UT code for WoS article

001415196200002

EID of the result in the Scopus database

2-s2.0-85210231906