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Timber Species (timber + species)
Selected AbstractsChloroplast DNA phylogeography reveals colonization history of a Neotropical tree, Cedrela odorata L., in MesoamericaMOLECULAR ECOLOGY, Issue 6 2003S. Cavers Abstract Spanish Cedar (Cedrela odorata L.) is a globally important timber species which has been severely exploited in Mesoamerica for over 200 years. Using polymerase chain reaction,restriction fragment length polymorphisms, its chloroplast (cp) DNA phylogeography was studied in Mesoamerica with samples from 29 populations in six countries. Five haplotypes were characterized, phylogenetically grouped into three lineages (Northern, Central and Southern). Spatial analysis of ordered genetic distance confirmed deviation from a pattern of isolation by distance. The geographically proximate Northern and Central cpDNA lineages were genetically the most differentiated, with the Southern lineage appearing between them on a minimum spanning tree. However, populations possessing Southern lineage haplotypes occupy distinct moist habitats, in contrast to populations possessing Northern and Central lineage haplotypes which occupy drier and more seasonal habitats. Given the known colonization of the proto-Mesoamerican peninsula by South American flora and fauna prior to the formation of the Isthmus of Panama, it seems most likely that the observed population structure in C. odorata results from repeated colonization of Mesoamerica from South American source populations. Such a model would imply an ancient, pre-Isthmian colonization of a dry-adapted type (possessing the Northern lineage or a prototype thereof), with a secondary colonization via the land bridge. Following this, a more recent (possibly post-Pleistocene) expansion of moist-adapted types possessing the Southern lineage from the south fits the known vegetation history of the region. [source] Isolation and characterization of microsatellite markers in Koompassia malaccensis (Leguminosae), an important tropical timber speciesMOLECULAR ECOLOGY RESOURCES, Issue 4 2006C. T. LEE Abstract This paper reports the isolation and characterization of 24 polymorphic microsatellite markers in an important tropical timber species, Koompassia malaccensis (Leguminosae). The primers were designed from a genomic library enriched for dinucleotide (CT) repeats and screened on 24 samples from a natural population. The number of alleles detected per locus ranged from two to 13 while the observed heterozygosity ranged from 0.042 to 1.000. Significant departure from Hardy,Weinberg equilibrium (P < 0.05) was detected in two loci. These microsatellite markers were tested across 13 timber species of the same family. The amplification success appeared to be associated with taxonomy classification at the genus but not subfamily levels. [source] A set of polymorphic microsatellites for Vochysia ferruginea, a promising tree for land reclamation in the NeotropicsMOLECULAR ECOLOGY RESOURCES, Issue 3 2002A. J. Lowe Abstract Vochysia ferruginea Mart. (Vochysiaceae) is a gap colonist of Neotropical forest. Because of its high tolerance of low-nutrient acidic conditions and high aluminium and iron concentrations, and its high potential seed and pollen dispersal, it is a promising timber species for commercial development as reclaimed forest on degraded land. We present here primer sequences for 10 polymorphic simple sequence repeat (SSR) loci for use with V. ferruginea to assess fine scale genetic structure and gene flow dynamics. [source] A set of polymorphic microsatellites for Vochysia ferruginea, a promising tree for land reclamation in the NeotropicsMOLECULAR ECOLOGY RESOURCES, Issue 2 2002A. J. Lowe Abstract Vochysia ferruginea Mart. (Vochysiaceae) is a gap colonist of Neotropical forest. As a result of its high tolerance of low-nutrient acidic conditions and high aluminium and iron concentrations, and its high potential seed and pollen dispersal, it is a promising timber species for commercial development as regenerated or reclaimed forest on degraded land. We present here the primer sequences for 10 polymorphic simple sequence repeat loci for use with V. ferruginea to assess fine-scale genetic structure and gene flow dynamics. [source] | ||||||||||