Caracterização morfoagronômica de germoplasma de açaizeiro no nordeste paraense

Galate, Rosemiro dos Santos; Mota, M. G. da C.; Gaia, José Maria Demetrio; Costa, Merilene do Socorro Silva

doi:10.1590/s0100-29452012000200028

Cited by 11 publications

(21 citation statements)

References 10 publications

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“…Similar values were found by Oliveira et al (2007) and Galate et al (2012), who evaluated samples of purple acai palm from different locations in the Amazon Estuary, using the same morpho-agronomic descriptors. However, in the present study, the percentage of variation accumulated up to the eighth component was much greater -above 92%.…”

Section: Resultssupporting

confidence: 80%

“…When these methods are used, the quantification of divergence is calculated through a measure of distance, such as, for example, the Euclidean distance, interpreted and visualized through multivariate procedures. In the case of the studied species and of other palm trees, some morpho-agronomic descriptors are tested in the germplasm, in order to quantify genetic divergence (Oliveira et al, 2006Galate et al, 2012;Domiciano et al, 2015). The lack of documentation, description, and evaluation of the genetic materials in the existing collections is a limiting factor for studies on the conservation and use of plant germplasm; in the case of white acai, there is no information available in the literature.…”

Section: Introductionmentioning

confidence: 99%

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Genetic divergence among white-type acai palm accessions based on morpho-agronomic characters

Sousa

Oliveira

Neto

2017

Pesq. agropec. bras.

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-The objective of this work was to quantify the genetic divergence among accessions of white-type acai palm (Euterpe oleracea), through morpho-agronomic characters. The accessions belong to the active acai palm germplasm bank of Embrapa Amazônia Oriental. Thirteen characters were evaluated in 26 accessions, originated from six municipalities in the state of Pará, Brazil. The data were subjected to deviance and multivariate analyses, based on the average Euclidean distance, and were grouped by Tocher's method and the unweighted pair group method with arithmetic mean (UPGMA). The accessions differed for eight characters. The distances among accessions ranged from 0.64 to 2.62, with an average of 1.36, and four groups were formed by Tocher's method and two by the UPGMA. Seven major components explained 88.03% of the variation, whose graphic dispersion showed the tendency of forming four groups. The characters weight of 100 fruits, number of rachillae per bunch, and fruit yield per bunch contributed the most to the divergence, and the accessions from the municipalities of Breves, Curralinho, and Limoeiro do Ajuru were the most divergent. Therefore, the accessions of white acai palm show strong divergence and variability, which favor the selection of desirable individuals.

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Section: Resultssupporting

confidence: 80%

Section: Introductionmentioning

confidence: 99%

Genetic divergence among white-type acai palm accessions based on morpho-agronomic characters

Sousa

Oliveira

Neto

2017

Pesq. agropec. bras.

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“…However, this tends to be redundant because characteristics are always associated with each other. Thus, the definition of a minimal set of descriptors reduces the need of collecting data without lowering the accuracy of the results (GALATE et al, 2012;OLIVEIRA et al, 2006;OLIVEIRA et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

“…Many disposal procedures have been used with the aim of discarding characters providing low information, such as those used by Cury (2003) in Manihot esculenta Crantz, Oliveira et al (2006), Galate et al (2012) in Euterpe oleracea Mart., and Redig (2013) in Maximiliana maripa (Aublet) Drude. Multivariate analysis techniques such as principal component analysis (PCA), which analyzes multidimensional data by focusing most of the total variation in the first components, have been used to evaluate morphoagronomic characters.…”

Section: Introductionmentioning

confidence: 99%

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Phenotypic characterization of açai palm germplasm from the Marajó’s archipelago and Baixo Tocantins territories

Sousa

Costa

Pereira

et al. 2017

SCA

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The açai palm (Euterpe oleracea Mart.), a native of the Amazon region, is a food of great importance. Recently, due to the discovery of its nutraceutical properties, the rational production in upland areas has been encouraged. However, to support the rational implementation of its cultivation for fruit production, which is a sort of domestication process, it is necessary to identify its germplasm. The aim of this study was to evaluate and quantify the genetic diversity based on phenotypic characters among açai palm mother plants derived from 11 areas of the Amazonian estuary. Twenty-nine phenotypic descriptors were used: (i) 9 from the plant, (ii) 7 related to the fruit, and (iii) 13 of agronomic nature. Principal component analysis was used to assess the phenotypic variability from standardized data obtained from selected açai palm mother plants. In the selection of the descriptors, the methods of direct selection and selection with re-analysis were used. The disposal efficiency was estimated by comparing dissimilarity groups formed by 11 origins of the açai palms based on 29 original characters and 23 selected characters. The groups were formed using the average standardized Euclidean distance and Tocher's optimization method. All the analyses were performed using the GENES program. The selection of 79.31% of the descriptors used was significant and was considered sufficient for the evaluation of the açai palm germplasm for fruit production. The selected descriptors were shown to be capable of quantifying the phenotypic diversity of mother plants of this species, consistently grouping them using the optimization method. The cluster method showed small differences in the number and composition of the groups due to variability among the selected mother plants. Key words: Descriptors. Diversity. Euterpe oleracea. Germplasm. Plant breeding. ResumoO açaizeiro (Euterpe oleracea Mart.) é uma palmeira nativa da região amazônica, de grande importância alimentar e, recentemente, devido à descoberta de suas propriedades nutracêuticas, está estimulando a produção racional em áreas de terra-firme. Para viabilizar essa expansão é necessário o conhecimento do seu germoplasma a fim dar suporte à implantação racional do cultivo para a produção frutos, pois trata-se de uma espécie em processo de domesticação. O objetivo deste trabalho foi avaliar e quantificar a diversidade genética entre matrizes de açaizeiro oriundas de 11 procedências do estuário amazônico, territórios do Arquipélago do Marajó e do Baixo Tocantins, baseada em caracteres fenotípicos. Foram empregados 29 descritores fenotípicos subdivididos em (i) nove relativos à planta, (ii) sete relativos ao fruto e (iii) 13 agronômicos. Foi utilizada a análise de componentes principais para avaliação da

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Use of agroindustrial wastes (açai fiber and glycerol) in the preparation of cookies

et al. 2014

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The aim of this study was to assess the effect of adding industrial byproducts (açai fiber and glycerol) on the physical, physicochemical, and sensory properties of cookies. The statistical analysis showed that only the parameters of water content and water activity are significantly influenced by the amount of açai fiber added and by the fiber's particle size. Through sensory analysis of crispness and the flavor, it was found that the best percentage of açai fiber and the best particle size added to the cookie formulation were 10 % and +28 mesh, respectively. From this result, another sensory analysis was performed to evaluate the effect of glycerol over the texture of the cookies. Acceptance indices for the crispness and flavor above 70 % were observed, indicating the possibility for industrial exploitation. Cookies with added industrial byproducts may be considered a source of fiber, as they contain 6 g/100 g fiber.

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Caracterização morfoagronômica de germoplasma de açaizeiro no nordeste paraense

Cited by 11 publications

References 10 publications

Genetic divergence among white-type acai palm accessions based on morpho-agronomic characters

Genetic divergence among white-type acai palm accessions based on morpho-agronomic characters

Phenotypic characterization of açai palm germplasm from the Marajó’s archipelago and Baixo Tocantins territories

Use of agroindustrial wastes (açai fiber and glycerol) in the preparation of cookies

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