DOI: 10.5061/dryad.2dg7c
title: Data from: Population genetic structure of the endemic rosewoods Dalbergia cochinchinensis and D. oliveri at a regional scale reflects the Indochinese landscape and life-history traits

description: Indochina is a biodiversity hot spot and harbors a high number of endemic
 species, most of which are poorly studied. This study explores the genetic
 structure and reproductive system of the threatened endemic timber species
 Dalbergia cochinchinensis and Dalbergia oliveri using microsatellite data
 from populations across Indochina and relates it to landscape
 characteristics and life-history traits. We found that the major water
 bodies in the region, Mekong and Tonle Sap, represented barriers to gene
 flow and that higher levels of genetic diversity were found in populations
 in the center of the distribution area, particularly in Cambodia. We
 suggest that this pattern is ancient, reflecting the demographic history
 of the species and possible location of refugia during earlier time
 periods with limited forest cover, which was supported by signs of old
 genetic bottlenecks. The D. oliveri populations had generally high levels
 of genetic diversity (mean He = 0.73), but also strong genetic
 differentiation among populations (global GST = 0.13), while D.
 cochinchinensis had a moderate level of genetic diversity (mean He =
 0.55), and an even stronger level of differentiation (global GST = 0.25).
 These differences in genetic structure can be accounted for by a higher
 level of gene flow in D. oliveri due to a higher dispersal capacity, but
 also by the broader distribution area for D. oliveri, and the pioneer
 characteristics of D. cochinchinensis. This study represents the first
 detailed analysis of landscape genetics for tree species in Indochina, and
 the found patterns might be common for other species with similar ecology.
description: Microsatellite data
 Dalbergia cochinchinensisSSR genotypes (9 loci)
 from 523 individuals of Dalbergia cochinchinensis, collected from 26
 populations across Cambodia, Thailand, Vietnam and Laos. Data is in
 GenAlex format. Information on sampling localities is also
 provided.Dalbergia cochinchinensis SSR
 data.xlsxMicrosatellite data
 Dalbergia oliveriSSR genotypes (7 loci)
 for 465 individuals of Dalbergia oliveri, collected from 23 populations
 across Cambodia, Vietnam and Laos. Data is in GenAlex format. Information
 on sampling localities is also provided.Dalbergia oliveri SSR
 data.xlsxDalbergia
 cochinchinensis mother-offspring genotypesSSR genotypes (9 loci)
 from Dalbergia cochinchinensis mother trees and greenhouse germinated
 seedlings. Samples and seeds from mother trees were collected from two
 populations in Cambodia. Data from NOY population includes 16 families
 (mother+offspring) and the SPEU population 11 families (mother+offspring).
 Data is in the format used by the MLTR software (Ritland, 2002), where the
 genotype for the mother tree is marked by an "!" and then
 followed by the genotypes from all her offspring. Locality information for
 the two populations can be found in the "Microsatellite data
 Dalbergia cochinchinensis" file in this data
 package.Dalbergia oliveri
 mother-offspring genotypesSSR genotypes (7 loci)
 from Dalbergia oliveri mother trees and greenhouse germinated seedlings.
 Samples and seeds were collected from 18 mother trees in one populations
 in Cambodia, RBL. Data is in the format used by the MLTR software
 (Ritland, 2002), where the genotype for the mother tree is marked by an
 "!" and then followed by the genotypes from all her offspring.
 Locality information for the RBL population can be found in the
 "Microsatellite data Dalbergia oliveri" file in this data
 package.