scholarly journals Mapping of natural populations of Euterpe oleracea Mart., structure and estimates of fruit production at Araguari River, Eastern Amazon

2021 ◽  
Vol 49 (132) ◽  
Author(s):  
Adriano Castelo dos Santos ◽  
João da Luz Freitas ◽  
Francisco de Oliveira Cruz Junior
Keyword(s):  
Natural Populations ◽  
Fruit Production ◽  
Euterpe Oleracea ◽  
Euterpe Oleracea Mart

Phenotypic variability and agronomic traits of açaí tree matrices in the state of Pará, Brazil

2019 ◽  
Vol 10 (5) ◽  
pp. 69-81
Author(s):  
Rosemiro Dos Santos Galate ◽  
Jessivaldo Rodrigues Galvão ◽  
Tiago Kesajiro Moraes Yakuwa ◽  
Deivison Rodrigues da Silva ◽  
Merilene Do Socorro Silva Costa ◽  
...  
Keyword(s):  
Agronomic Traits ◽  
Phenotypic Variability ◽  
Fruit Size ◽  
Fruit Production ◽  
Fruit Weight ◽  
Pulp Yield ◽  
Palm Tree ◽  
Euterpe Oleracea ◽  
Recessive Genes ◽  
Euterpe Oleracea Mart

Açaí palm (Euterpe oleracea Mart.) is a native palm tree from the Eastern Amazon, Brazil. It is considered an economically viable source of anthocyanins for the dye and medicine industries. This study aimed to estimate the phenotypic variability and to select genotypes for genetic improvement. Descriptive statistics were used to estimate phenotypic variability. Truncated selection was performed for fruit production per bunch. The collected samples presented the highest fruit yield per cluster of all studied region. Number of fruits per cluster and stem circumference are possibly controlled by few genes. longitudinal fruit diameter may have recessive genes that are decreasing fruit size. Fruit weight, seed weight, pulp weight, number of stem per plant, total cluster length, fruit weight per cluster and pulp yield per fruit presented frequency distribution in favor of heterozygotes. There some characteristics controlled by few genes, with evidence of selection and spontaneous domestication of the matrices.

scholarly journals Productivity and nutrition of fertigated açaí palms according to boron fertilization

2020 ◽  
Vol 42 (2) ◽  
Author(s):  
Marcelo Morita Lindolfo ◽  
Gilson Sérgio Bastos de Matos ◽  
Wendel Valter da Silveira Pereira ◽  
Antonio Rodrigues Fernandes
Keyword(s):  
Experimental Design ◽  
Fruit Production ◽  
Natural Soil ◽  
Euterpe Oleracea ◽  
Palm Trees ◽  
Critical Content ◽  
Limiting Nutrients ◽  
International Demand ◽  
Boron Fertilization ◽  
Euterpe Oleracea Mart

Abstract Due to the increasing national and international demand, the cultivation of açaí palm trees (Euterpe oleracea Mart.) has expanded to upland areas in Brazil. Most of these areas present low natural soil fertility, in which boron (B) is one of the most limiting nutrients. This study aimed to evaluate the productivity of fresh fruits of fertigated açaí trees submitted to doses of B. The study was carried out in Tomé-Açu, northeastern Pará, Brazil. The experimental design consisted of randomized blocks with four treatments: control and addition of 20, 40 and 60 g of B clump-1. After 17 months, bunches of fresh fruits were collected and the production per hectare was estimated. An economic analysis was carried out considering the costs of fertilization and fruit production. The productivities obtained in the treatments were considered above the average of the municipality of Tomé-Açu. The estimated content of leaf B that provided the highest productivity was 14.9 mg kg-1, for a yield of 5479 kg ha-1 year-1¸ while the critical content corresponded to 13.2 mg kg-1. The highest productivity of fresh açaí fruits was achieved with the dose of 20 g of B clump-1, which provided a net gain of 42%.

Preparation and Characterization of the Nutritive Value of Flour Made from Acai (Euterpe oleracea, Mart.) Seeds

2014 ◽  
Vol 4 (3) ◽  
pp. 224-228
Author(s):  
Elaine Lima ◽  
Edna Santos ◽  
Robert Smith ◽  
Armando Sabaa-Srur
Keyword(s):  
Nutritive Value ◽  
Euterpe Oleracea ◽  
Euterpe Oleracea Mart

Absorption and Biological Activity of Phytochemical-Rich Extracts from Açai (Euterpe oleracea Mart.) Pulp and Oil in Vitro

2008 ◽  
Vol 56 (10) ◽  
pp. 3593-3600 ◽  
Author(s):  
Lisbeth A. Pacheco-Palencia ◽  
Stephen T. Talcott ◽  
Stephen Safe ◽  
Susanne Mertens-Talcott
Keyword(s):  
Biological Activity ◽  
Euterpe Oleracea ◽  
Euterpe Oleracea Mart

Effect of Euterpe oleracea Mart. (Açaí) Oil on Dyslipidemia Caused by Cocos nucifera L. Saturated Fat in Wistar Rats

2017 ◽  
Vol 20 (9) ◽  
pp. 830-837 ◽  
Author(s):  
Belmira S. Faria e Souza ◽  
Helison O. Carvalho ◽  
Talisson Taglialegna ◽  
Albenise Santana A. Barros ◽  
Edilson Leal da Cunha ◽  
...  
Keyword(s):  
Wistar Rats ◽  
Cocos Nucifera ◽  
Saturated Fat ◽  
Euterpe Oleracea ◽  
Cocos Nucifera L ◽  
Euterpe Oleracea Mart

Phyllotaxis of the palm Euterpe oleracea Mart. at the level of the shoot apical meristem

Botany ◽  
2010 ◽  
Vol 88 (5) ◽  
pp. 528-536 ◽  
Author(s):  
Denis Barabé ◽  
Laura Bourque ◽  
Xiaofeng Yin ◽  
Christian Lacroix
Keyword(s):  
Shoot Apical Meristem ◽  
Fundamental Theorem ◽  
Apical Meristem ◽  
Leaf Primordia ◽  
Leaf Primordium ◽  
Divergence Angle ◽  
Euterpe Oleracea ◽  
The Mean ◽  
The Relationship ◽  
Euterpe Oleracea Mart

Previous studies on palm phyllotaxis deal mainly with the mature trunk. The goals of this study are (i) to determine the relationship between the number of parastichies, the divergence angle, and the plastochrone ratio at the level of the shoot apical meristem; (ii) to examine whether there are fluctuations in the divergence angle; (iii) to interpret the significance of phyllotactic parameters with respect to the mode of growth of the apex. The tubular base of the leaf primordium is more or less asymmetrical, and completely surrounds the shoot apical meristem. The phyllotactic system corresponds to a (2, 3) conspicuous parastichy pair. The mean divergence angle per apex varies between 126.9° ± 9.3° (mean ± SD) and 135. 8° ± 8.0°. Divergence angles for all apices fluctuate within a range of 115.89° to 157.33°. The mean plastochrone ratios between apices varies from 1.35 ± 0.18 to 1.58 ± 0.12. The plastochrone ratio at each plastochrone for all apices ranges from 1.09 to 2.00. There is no correlation between the angle of divergence and the plastochrone ratio. There is a fluctuation in the value of the divergence angle that falls within the range predicted by the fundamental theorem of phyllotaxis. The high value of the ratio of the diameter of leaf primordia over the diameter of the apex, and the long plastochrone might explain the lack of correlation between certain phyllotactic parameters.

scholarly journals Proposta conceitual de colhedoras autopropelidas de açaí (Euterpe oleracea Mart.) para a região amazônica

2012 ◽  
Vol 43 (2) ◽  
pp. 382-389 ◽  
Author(s):  
Daniel Albiero ◽  
Antonio José da Silva Maciel ◽  
Renildo Luiz Mion ◽  
Carlos Alberto Viliotti ◽  
Carlos Antonio Gamero
Keyword(s):  
Euterpe Oleracea ◽  
Euterpe Oleracea Mart

scholarly journals Relação entre caracteres da planta e do palmito de açaizeiros

Bragantia ◽  
1990 ◽  
Vol 49 (1) ◽  
pp. 69-81 ◽  
Author(s):  
Marilene Leão Alves Bovi ◽  
Gentil Godoy Júnior ◽  
Sandra Heiden Spiering ◽  
Sérgio Bueno de Camargo
Keyword(s):  
Sao Paulo ◽  
São Paulo ◽  
Euterpe Oleracea ◽  
Euterpe Oleracea Mart

Estudaram-se caracteres vegetativos da planta e do palmito de açaizeiros (Euterpe oleracea Mart) cultivados na Estação Experimental de Ubatuba, litoral norte do Estado de São Paulo, Brasil, com o objetivo principal de identificar caracteres não-destrutíveis que possam ser utilizados na seleção de plantas superiores no programa de melhoramento genético dessa palmeira. Entre os dez caracteres estudados, o número de perfilhos, o peso bruto do palmito e os pesos do resíduo basal e do palmito mostraram maior variabilidade (CV acima de 40%). Menor variabilidade foi encontrada para os caracteres número de folhas e circunferência da planta-mãe (CV entre 14 e 18%). O peso, os diâmetros e o comprimento do palmito mostraram-se positivamente correlacionados com a circunferência da planta. Correlação negativa foi evidenciada entre peso bruto do palmito e número de perfilhos e entre esta última variável e o peso do resíduo basal. O número de folhas mostrou correlação parcial significativa apenas com o diâmetro médio do palmito e com o peso do palmito bruto. Entre os caracteres vegetativos não-destrutíveis avaliados, a circunferência da planta foi o que mais contribuiu para a variação apresentada pelo palmito bruto e liquído (peso, diâmetro e comprimento), sendo responsável por mais de 65% da variação do peso bruto, 35% do peso líquido e em tomo de 50% de seu diâmetro. Constitui-se, assim, em um caráter útil, além de não-destrutível e facilmente mensurável, para orientar a seleção de plantas superiores de açaizeiro num programa de melhoramento genético de palmeiras desta espécie.

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