Genetic Diversity and Conservation of Mexican Forest Trees

Genetic structure of remnant black poplar (Populus nigra L.) populations along biggest rivers in Serbia assessed by SSR markers

“…Therefore, present populations of still high genetic diversity which are situated in the north Balkans refugia should be considered as source populations for future conservation and restoration projects. Nevertheless, despite its importance for the long-term viability and the evolutionary potential of tree species and functioning of ecosystems, the genetic diversity of populations seldom receives explicit consideration in conservation programs (Kahilainen et al, 2014;Wehenkel et al, 2016).…”

Phenotypic variation among natural populations of pines: implications for the management and conservation of genetic resources

“…Usually, in absence of genetic information, it will be necessary to cover the ecological distribution range of the species (Lefèvre et al 2013). In our case, we are able to cover the different areas of the species by using the forest germplasm procurement zones, where some genetic information is available (Wehenkel et al 2017). Most of the Mexican pine species should have high genetic diversity, relatively low genetic differentiation among populations for neutral or nearly neutral markers (Galicia et al, 2015in Wehenkel et al 2017), e.g.…”

“…During the past 20 years, different molecular tecniques have been used in trees, such as simple sequence repeats or microsatellites (SSR), chloroplast microsatellites (cpSSR), random amplified polymorphic DNA (RAPD), amplified fragment length polymorphisms (AFLP), polymerase chain reaction-restriction fragment length polymorphisms (PCR-RFLP), and sequence variation in both mitochondrial DNA (mtDNA), and chloroplast DNA (cpDNA) regions (Wehenkel et al 2017). Different genetic diversity parameters have been usually calculated, such as the expected heterozygosity (He), the percentage of polymorphic loci (% P), the Shannon diversity index (S), the total haplotype diversity (H), the nucleotide diversity (π), the observed degrees of Gregorius' total differentiation (δT), and mean genetic diversity (vmean,2) among many others (Wehenkel et al 2017).…”

“…These pines have a different level of genetic knowledge, but in most of the cases is still incomplete. Genetic variation have been studied in only 1.2% forest tree species, for which 58% belong to the genus Pinus, 15% to Quercus, 10% to Abies, and 6% to Picea; most of genetic diversity studied come from Pinacea family but only includes 2% of all Mexican tree taxa (Wehenkel et al 2017). However, they are actively managed e.g.…”

“…However, they are actively managed e.g. 60% are of commercial importance and provide timber, resin and pulp for the paper industry (Sánchez-González 2008), and constitute a valuable source of genetic resources for the genera (Dvorak 1990;Wehenkel et al 2017). Therefore, it is necessary to advance in the conservation and sustainable use of the species, and specially to define priority actions.…”