Repetibilidade em características biométricas do fruto de macaúba

Manfio, Cândida Elisa; Motoike, Sérgio Yoshimitsu; Santos, Carlos Eduardo Magalhães dos; Pimentel, Leonardo Duarte; Queiroz, Vanessa de; Sato, Aurora Yoshiko

doi:10.1590/s0103-84782011000100012

Cited by 46 publications

(51 citation statements)

References 13 publications

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“…Based on the difference between the final volume (after immersion of the fruit) and the initial volume, fruit volume was obtained (Manfio et al, 2011). The measurements through SDM were obtained from the volume of millet seeds displaced after immerging the fruit in a graduated cylinder (mL) (Griswold, 1972).…”

Section: Methodsmentioning

confidence: 99%

“…The determination of biometric characteristics of macaw palm fruits, such as weight, volume, diameter, surface area and thickness, is important in the process of evaluation and selection of fruits (Manfio et al, 2011;Bottega et al, 2013); in addition, these characteristics are relevant in the marketing. Optical metrology techniques have been proposed as alternatives for the direct-contact methods with samples analysed to obtain information on fruit surface area and volume (Riddle, 1979;Rashidi & Ghomali, 2008;Khojastehnazhand et al, 2009;Rashidi et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

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Measurement of volume of macaw palm fruit using traditional and the digital Moiré techniques

Costa

Ribeiro

Braga

et al. 2016

Rev. bras. eng. agríc. ambient.

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A B S T R A C TThe macaw palm crop has been studied because of its bioenergy potential due to the high oil yield, which is linked to fruit maturity stage. Digital images have been adopted as a contactless way to obtain information about fruit surface area and volume, acting as a sensor for quality control and the classification of fruits, based on physical aspects during the maturation stage. The aim of this study was to estimate the volume of macaw palm fruits from digital models obtained by the Moiré technique using only one camera, associated with digital imageprocessing tools to unwarp the images, allowing the comparison with conventional methods. The volumes obtained by the Moiré technique were compared with those obtained by water displacement method (WDM) and millet-seed displacement method (SDM). The results show that the volumes measured by the Moiré technique exhibited a mean error of 13.54% compared with the SDM, and 11.09% when compared to WDM, which indicates that the digital Moiré technique is a robust, low-cost tool to measure the volume of macaw palm fruits.Mensuração do volume do fruto de macaúba por meio das técnicas convencionais e pela técnica digital de Moiré R E S U M OA cultura da macaúba vem sendo estudada devido ao seu potencial bioenergético propiciado pela alta produtividade de óleo que, por sua vez, está associado ao estádio de maturação do fruto. Imagens digitais têm sido utilizadas como forma para extrair informações sem contato sobre a área superficial e volume de frutos, com a finalidade de construir sensores que possam atuar no controle de qualidade e classificação a partir de aspectos físicos ligados ao estádio de maturação. O objetivo deste trabalho foi estimar o volume do fruto de macaúba a partir de imagens digitais obtidas pela técnica de Moiré por meio de uma única câmera associada ao uso de técnicas de correção digital da deformação das imagens, comparando os volumes estimados por métodos convencionais. Os volumes obtidos pela técnica de Moiré foram comparados com os volumes obtidos pelo método de deslocamento de coluna de água e pelo método do deslocamento de sementes de painço. Os volumes medidos pela técnica de Moiré apresentam um erro médio de 13,54 e de 11,09% quando comparados aos métodos convencionais, sendo considerada uma alternativa robusta e de baixo custo para a mensuração do volume de frutos de macaúba.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Measurement of volume of macaw palm fruit using traditional and the digital Moiré techniques

Costa

Ribeiro

Braga

et al. 2016

Rev. bras. eng. agríc. ambient.

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“…), banana , palm heart (BERGO et al, 2013), peach (BRUNA et al, 2012), macaúba (MANFIO et al, 2011), pitanga (DANNER et al, 2010, sour passion fruit (SANTOS et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Heritability, Repeatability, and Genetic Gains in a Improvement Population of Cajuízeiro

et al. 2016

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-Cajuí (Anacardium spp) is an endemic fruit trees species in the Northeastern region of Brazil. Thus, this trial aimed to estimate the repeatability coefficients of the agrotechnological variables and to predict the genetic gains of a cajuí improvement population located at the Embrapa Meio-Norte. The data of twelve variables from every crop were evaluated using Selegen-REML/BLUP. The variables were ordered accordingly: V1 fruit mass (FM, in g), V2 peduncle mass (PM, in g), V3 chestnut mass (CM in g), V4 basal diameter (BD in cm), V5 apical diameter (AD in cm), V6 fruit length (FL in cm), V7 firmness of endosperm (FIRM, in N), V8 content of vitamin C (PVC in %), V9 total soluble solids (TSS in %), V10 pH of endosperm (pH), V11 total titratable acidity (TTA in %), and V12 relation TSS/TTA (undimensional). The fruit mass and its vitamin C contents can be estimated from measures of the fruit basal diameter and/or peduncle length, which are easy to be taken and measured experimentally. The medium and high estimates of the repeatability coefficient allowed for the early selection of the genotype 4 with accuracy from the two measures (years). The genotype 4 showed the best prediction means for physical and technological attributes and may be considered a possible candidate for asexual reproduction on crops with double purpose (fresh consumption and industrial).

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“…(LORENZI et al, 2010) constitute some of the principal extractivist resources that provide income to millions of people in Brazil, especially in the northern and northeastern regions of that country (MAY et al, 1985;BALICK et al, 1987;PORRO, 2005;TEIXEIRA, 2008). The endocarp of these palms can be used to produce high-quality charcoal for use in the steel industry due to its very high density and favorable chemical composition (SILVA et al, 1986;TEIXEIRA, 2008).…”

Section: Introductionmentioning

confidence: 99%

“…Biometric analyses of fruits are useful for evaluations of genetic variability within and between populations and allow researchers to differentiate species of the same genus, better define the relationships between the different genotypes and environmental factors, and initiate programs of genetic improvement (CRUZ et al, 2001;GUSMÃO et al, 2006;MANFIO et al, 2011). Additionally, these analyses provide important information for selecting diaspores for propagation (PEDRON et al, 2004) and for conservation efforts -thus favoring the rational use of valuable natural resources (SOLER et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Fruit Morphology and Productivity of Babassu Palms in Northern Minas Gerais State, Brazil1

et al. 2015

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-The objectives of this study were to morphologically characterize fruits of the babassu palm tree (Attalea vitrivir) and to estimate their productivity in the north of Minas Gerais State, Brazil. Twenty mature fruits were collected from 10 plants in three different areas in Januária, Minas Gerais. Eighteen biometric parameters of the fruits were measured, the oil contents of the seeds was determined, the adherence to normal distribution was evaluated, distribution frequencies were evaluated and the effects of individuals and areas on the variables and the correlations between them were analyzed. The production of fruit bunches per plant and the number of fruits per bunch from 10 plants were quantified in three areas and the potential production under both natural harvesting and cultivation conditions were estimated. Significant differences were found among all of the biometric parameters examined between the different individuals and the different areas, which shows wide morphological variability in the fruits. The average oil content was 45.7%, but with significant differences among individuals. The observed variability favors the selection of productive individuals in genetic improvement programs. The potential productivity of endocarps and oil based on a density of 400/plants per hectare would be respectively 6.4 and 1.2 tons/ha, which indicates the possibility of using A. vitrivir for producing charcoal, bio fuels, and for carbon fixation.Keywords: Attalea vitrivir; Fruit biometry; Oil content. MORFOLOGIA DOS FRUTOS E PRODUTIVIDADE DE BABAÇU NO NORTE DE MINAS GERAIS, BRASILRESUMO -Os objetivos deste trabalho foram caracterizar morfologicamente os frutos de babaçu e estimar a sua produtividade (Attalea vitrivir) no Norte de Minas Gerais. Foram coletados 20 frutos maduros de 10 plantas em três áreas, no Município de Januária, MG. Mensuraram-se 18 parâmetros biométricos dos frutos, determinou-se o teor de óleo das sementes e avaliaram-se a aderência à distribuição normal, a distribuição de frequência e a correlação entre as variáveis e o efeito do indivíduo e da área. Quantificou-se a produção de cachos por planta e de frutos por cacho em 10 plantas, nas três áreas, e estimou-se a produtividade potencial em condição de extrativismo e de cultivo. Em todas as variáveis biométricas estudadas, houve diferença significativa entre os indivíduos e áreas, evidenciando-se grande variabilidade na morfologia dos frutos. O teor médio de óleo foi de 45,7%, com diferença significativa entre os indivíduos. A grande variabilidade encontrada favorece, em programas de melhoramento, a seleção de indivíduos mais produtivos. A produtividade potencial de endocarpo e óleo em densidade de 400 plantas/ha é de 6,4 e 1,2 t/ha, respectivamente, o que amplia a possibilidade de uso de A. vitrivir na produção de carvão, na indústria de biocombustíveis e na fixação de carbono.Palavras-chave: Attalea vitrivir; Biometria de frutos; Teor de óleo.

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Repetibilidade em características biométricas do fruto de macaúba

Cited by 46 publications

References 13 publications

Measurement of volume of macaw palm fruit using traditional and the digital Moiré techniques

Measurement of volume of macaw palm fruit using traditional and the digital Moiré techniques

Heritability, Repeatability, and Genetic Gains in a Improvement Population of Cajuízeiro

Fruit Morphology and Productivity of Babassu Palms in Northern Minas Gerais State, Brazil1

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