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Publications of : L.D. Giustina
Plant Genetics   Research Article

Diversity and genetic structure of the native Brazil nut tree (Bertholletia excelsa Bonpl.) population

The present study was carried out in a native Brazil nut tree population (Bertholletia excelsa Bonpl., Lecythidaceae) to assess its genetic diversity and structure. Ten microsatellite markers were used to genotype 198 adult trees (B. excelsa). The population presented high genetic diversity and inbreeding absence rates. The empirical Bayesian method showed three dis.. Read More»

Genet. Mol. Res. 16(3): gmr16039702

DOI: 10.4238/gmr16039702

Human Genetics   Research Article

Population structure and genetic diversity in natural populations of Theobroma speciosum Willd. Ex Spreng (Malvaceae)

    L.D. Giustina, L.N. Luz, F.S. Vieira, F.S. Rossi, C.R.A. Soares-Lopes, T.N.S. Pereira and A.A.B. Rossi

The genus Theobroma found in the Amazon region is composed of 22 species, including Theobroma speciosum, better known as cacauí. These species are constantly threatened by forest fragmentation caused by human activities and require conservation strategies and management aimed at preserving them in their natural environments. The main objective of this study w.. Read More»

Genet. Mol. Res. 13(2): 2014.February.14.5

DOI: 10.4238/2014.February.14.5

Plant Genetics   Research Article

Genetic diversity between and within half-sib families of Brazil nut tree (Bertholletia excelsa Bonpl.) originating from native forest of the Brazilian Amazon

Brazil nut tree is a species of economic importance for the Amazon region, known for the commercialization of its almonds. The objective of this work was to study the genetic diversity among half-sib progenies from different Brazil nut trees present in native forest in the municipality of Itaúba, MT, belonging to the Brazilian Amazon. In a native forest area .. Read More»

Genet. Mol. Res. 16(4): gmr16039839

DOI: 10.4238/gmr16039839

Plant Genetics   Review Article

Hierarchical outcrossing among and within fruits in Bertholletia excelsa Bonpl. (Lecythidaceae) open-pollinated seeds

Knowing the mating patterns is important to determine the number of trees necessary for seed collection for conservation ex situ, tree breeding and environmental reforestation purposes. We investigated B. excelsa individuals and fruits, to check mating system index variations in a population by using open-pollinated seeds which were hierarchically sampled within and.. Read More»

Genet. Mol. Res. 17(1): gmr16039872

DOI: 10.4238/gmr16039872

Human Genetics   Research Article

Genetic diversity in natural populations of Theobroma subincanum Mart. in the Brazilian Amazon

    L.H. Rivas1, L.D. Giustina1, L.N. Luz2, I.V. Karsburg1, T.N.S. Pereira2 and A.A.B. Rossi1

The genus Theobroma, recently reclassified in the family Malvaceae, comprises some species with high economic potential, including the cupuí, Theobroma subincanum Mart., which has not yet been domesticated, and whose genetics and population structure are mostly unknown. This study aimed to assess the population structure and genetic diversity in natural populations of T. subincanum Mart... Read More»

Genet. Mol. Res. 12(4): 2013.October.24.12

DOI: 10.4238/2013.October.24.12

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