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.

Author: Gulkis Nazuru
Country: Seychelles
Language: English (Spanish)
Genre: Health and Food
Published (Last): 2 October 2017
Pages: 330
PDF File Size: 8.60 Mb
ePub File Size: 9.48 Mb
ISBN: 523-5-13259-113-2
Downloads: 47005
Price: Free* [*Free Regsitration Required]
Uploader: Doujar

Young leaf tissue samples of each genotype were individually collected and stored in micro-test tubes with silica gel for further DNA isolation. This pioneer species can be inter-cultivated with food crops because it has a small crown with thin branches, and the older branches naturally self-prune in the lower crown. Our results confirm that even a small clonal garden that was used in our research –under the conditions that the collection be correctly done– could possess relatively high genetic diversity and thus could form a good base for further domestication of the species.

This study indicates that ISSR markers are effective and a relatively easy way to detect polymorphism and characterization of genetic variation. Sterculiaceae family as one of the priority timber species for agroforestry systems So-telo-Montes and Weber They were identified and selected based on phenotypic measurements along ten years of evaluation. ISSRs are an efficient tool to analyze the variability and genetic structure in natural, managed and cultivated tree stands, and are useful to identify genotypes, even among highly related individuals Thangjam Inter Simple Sequence Repeat ISSR markers combine some advantages of other markers such as reproducibility, low costs and no need to develop species-specific primers for analysis.


Guazuma crinita Images

An analysis of Nei’s genetic identities of the pair-wise comparison between provenances varied from 0. Topology of the dendrogram showed that clusters were not related to the geographic origins of the genotypes. Biodiversity and Conservation Primers used in the ISSR analysis and summary of amplifications.

Genetic variation in growth of Guazuma crinita Mart. Guazuma crinita is an important fast-growing timber tree species widely guazma in agroforestry systems in the Peruvian Amazon.

A rapid DNA isolation procedure for small quantities of fresh tissue. Dendrogram of 44 Guazuma crinita genotypes based on Jaccard’s dissimilarity index. It seems that, there exists extensive gene flow, thus the provenances were not genetically isolated.

Consulted 15 May Nevertheless, there was a weak positive correlation between genetic and geographic distance of the provenances. Population genetic software for teaching and research-an update.

Guazuma crinita Images – Useful Tropical Plants

Applied Biochemistry and Biotechnology Forest Ecology and Management Geographic variation in tree growth and wood density of Guazuma crinita Mart. Genetic variability is essential to the success of strategies for tree improvement including selection, sustainable management and genetic resource conservation O’Neill et al. Ten ISSR primers amplified a total of 65 bands of which 61 were polymorphic This suggests that geographic distance had a small effect on genetic differentiation among provenances.


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.

Our study revealed Strategies for genetic conservation of trees in the Peruvian Amazon. Due to its fast initial height growth up to 3 m per year it has also been promoted in reforestation programs and agroforestry systems IIAP The dendrogram showed that the genotypes were grouped into three distinct clusters.

Tournavista-road also had the lowest Nei’s gene diversity He and Shannon index I.

Since seeds are dispersed by rivers downstream, we might expect higher genetic diversity below the confluence of major rivers, consequently targeting conservation in gjazuma areas may be an effective conservation strategy.

In this study of 44 genotypes from 11 provenances of G.

Guazuma crinita

However He of G. Overall coefficient of genetic differentiation G st was 0. In Dawson I, R Jamnadass eds. Technical Manual N guszuma 9.