Guazuma crinita is a semideciduous tree with a narrow, elongate or pyramidal crown; it can grow 7 – 18 metres tall in Brazil, but can exceed 30 metres in Bolivia . PDF | Guazuma crinita (Mart.) is an important timber-tree species for agroforestry plantations in the Peruvian Amazon Basin. Trees are typically. Peruvian smallholder production and marketing of bolaina (Guazuma crinita), a fast-growing Amazonian timber species: Call for a.

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The objectives of this research are i to assess genetic diversity of G. A total of 61 fragments were polymorphic Within population variation, genetic diversity, mating systems and stand structures.

Genetic resource impacts of habitat loss and degradation; reconciling empirical guazuna and predicated theory for neotropical trees. In Dawson I, R Jamnadass eds.

Overall genetic differentiation G jt was 0. Popula tion genetic structure of mahogany Swietenia macrophylla King, Meliaceae across vrinita Brazilian Amazon, base on microsatellite at the loci: The overall analyses of genetic variation at watershed and provenance level are shown in table 3.

Nevertheless, there was a weak positive correlation between genetic and geographic distance of the provenances. There was a weak positive relationship between geographic and genetic distances of the provenances. A domestication program for tropical tree species started in the mids in the Peruvian Amazon, and identified Guazuma crinita Mart.

Guazuma crinita – Useful Tropical Plants

Tournavista-road also had the lowest Nei’s gene diversity He and Shannon index I. Consulted 15 May However He of G. PCR amplification of the samples with each primer was carried out in duplicate so as to ensure the consistency and reproducibility of the results.


Our study revealed However, the cluster analysis did not reveal any clear geographical pattern among the genotypes from the different provenances.

Among the 30 universal UBC-ISSR primers University guszuma British Columbia, Canada tested for their ability to produce distinct, reproducible and well-resolved fragments in the 44 individual genotypes, 10 primers were selected for the amplification of all the samples table 2.

Applied Biochemistry and Biotechnology Topology of the dendrogram showed that clusters were not related to the geographic origins of the genotypes.

In this study of 44 genotypes from 11 provenances of G. The species can potentially produce a dense stand of natural regeneration in open patches Rochon et al.

Guazuma crinita Images

rcinita The cycling conditions were as follows: It provides wood products at an early age yearscan be coppiced for successive harvests and contributes significantly to farmers’ income Labarta and Weber It may reflect the exchange of genes by the influence of human activity along closer watersheds.

In order to assess relationships among provenances, a cluster analysis was used to generate a dendrogram based on Jaccard’s dissimilarity among the 44 genotypes figure 2. A rapid DNA isolation procedure for small quantities of fresh tissue.

Forest Ecology and Management DNA quality was determined by 0.

Geographic distance in kilometers above diagonal and Nei’s genetic distance below diagonal. Its importance has prompted research to identify the best provenances and improve the management of the species.


Guazuma crinita

We recommend in situ conservation strategies for populations with high levels of genetic diversity. The lowest genetic distance was between Nueva Requena ANR and Curimana river ACR provenances which are both located along the Curimana river figure 1suggesting that downstream dispersal of seeds reduces the genetic distance.

Genetic variability is essential to the success of strategies for tree improvement including selection, sustainable management and genetic resource conservation O’Neill et al. Biodiversity and Conservation This suggests that geographic distance had a small effect on genetic differentiation among provenances.

BOLD Systems: Taxonomy Browser – Guazuma crinita {species}

Puerto Inca and PMA: We hypothesized that there is a high level of polymorphism within provenances, very little differentiation among provenances and a positive relationship between genetic distance and geographic distance among provenances. In addition to ex situ clonal gardens, in situ conservation of populations of G. A case study from Amazonia. The dynamic of gene flow via rivers within and among watersheds in the Peruvian Amazon Basin Jansky and forest fragmentation due to shifting cultivation could contribute to the formation of subpopulations Dourojeanni Advances in Agroforestry 9 2: Sample origin and plant material.