Path analysis for selection of feijoa with greater pulp weight

Donazzolo, Joel; Salla, Vanessa Padilha; Sasso, Simone Aparecida Zolet; Danner, Moeses Andrigo; Citadin, Idémir; Nodari, Rubens Onofre

doi:10.1590/0103-8478cr20161062

Cited by 8 publications

(11 citation statements)

References 12 publications

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“…The coefficients of determination of the models used to perform the ridge regression were higher than 0.99, thus higher than those found in the literature in path analysis studies (Cabral et al, ; Donazzolo et al, ; Melo et al, ; Reis Neto et al, ). This way, the explanatory models adopted expressed the cause‐effect relationship between the dependent and independent variables through path analysis.…”

Section: Discussionmentioning

confidence: 61%

“…The lack of coherence between partial and simple correlations is justified by the fact that simple correlation measures the linear association between two variables, while the partial correlation coefficient measures the association between two variables after controlling the effects of one or more variables (Donazzolo et al, ; Souza, Ribeiro, Scalon, & Guedes, ). However, the variables vary simultaneously, with an interrelationship between them, which makes it unsafe to use the correlations only as a parameter of choice for a certain characteristic.…”

Section: Discussionmentioning

confidence: 99%

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Associations between morphometric variables and weight and yields carcass in PirapitingaPiaractus brachypomus

et al. 2019

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The objective of this work was to evaluate the association between morphometric variables and carcass characteristics in Pirapitinga. We used a thousand specimens of Pirapitinga with an average weight of 1,200 g, which were stunned, slaughtered, weighed, measured, and processed for morphometric and processing yield analysis, to obtain weights, carcass and fillet yields. Initially, the linearity of the variables was verified. Pearson's simple and partial correlation tests were performed between all metrics. Track analysis was performed considering the weights and yields of carcass and filet as dependent variables and the others as independent variables. Ridge regression models were used to eliminate the effects of multicollinearity among the independent variables. Observations showed that the simple correlations between body weights and yields were superior to the partial ones in terms of magnitude. The length and circumference of the specimens were the measures most linearly associated with weight, carcass weight and fillet with rib weight. As for carcass yield and fillet yield, linear correlation coefficients were low and not significant when associated with body weights.With the path analysis, we could observe significant positive correlations between the morphometric measurements for weight, carcass weight and fillet with rib weight.The standard length, body circumference and body circumference/body height ratio are the most correlated. The latter are the most important variables in the evaluation of body weights in Pirapitinga fish. They can serve as criteria for indirect selection in searching for fish with better carcass characteristics. As for fillet and carcass yields, the morphometric variables have not shown to be efficient for indirect selection. K E Y W O R D Sbreeding fish, correlation, multivariate, path analysis, round fish

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Section: Discussionmentioning

confidence: 61%

Section: Discussionmentioning

confidence: 99%

Associations between morphometric variables and weight and yields carcass in PirapitingaPiaractus brachypomus

et al. 2019

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“…Esse resultado mostra a elevada correlação dessas duas variáveis. Segundo Donazzolo et al (2017), o peso total do fruto, seguido do diâmetro, tem efeito direto e é uma das principais caracteristicas associadas ao peso de polpa, fator de grande importância comercial.…”

Section: Discussionunclassified

“…A correlação entre o rendimento de polpa e a espessura de casca já foi avaliada anteriormente em outros estudos (DEGENHARDT et al, 2003;DONAZZOLO et al, 2017). No estudo em que foram utilizados frutos de 229 acessos do BAG, as características peso total de fruto, diâmetro do fruto e espessura da casca estão fortemente relacionadas ao rendimento da polpa (SÁNCHEZ-MORA et al, 2019).…”

Section: Discussionunclassified

Avaliação de frutos de goiabeira-serrana cultivados no meio oeste de Santa Catarina, Brasil

Sánchez-Mora¹,

Saifert²,

Petry³

et al. 2020

Biotemas

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O objetivo do presente estudo foi determinar o comportamento das características físico-químicas dos frutos de sete genótipos de goiabeira-serrana cultivados em dois locais em Santa Catarina. A avaliação foi realizada nas safras 2011/12, 2014/15 e 2015/16 nos genótipos 85, 101, 223, 458 e 509, na localidade de Fraiburgo (comunidade Papuã), e nas safras 2014/15 e 2015/16, nos genótipos 28.12 e 527, na localidade de Água Doce (comunidade Vista Alegre). Foram avaliados diâmetro (cm), comprimento (cm) e peso do fruto (g), peso de casca e polpa (g), espessura de casca (mm) e sólidos solúveis totais (grau Brix). Foram realizadas análise de variância, comparação entre médias pelo teste Tukey (p < 0,05) e correlações de Pearson (p < 0,05) entre as características dos frutos. Em Água Doce, o genótipo 527 registrou o maior diâmetro e peso do fruto (88,7 g). Em Fraiburgo, destacou-se o genótipo 85, que registrou o maior peso de fruto (94,9 g) e 509 com maior rendimento de polpa (37,5%). Foi constatado que nem todos os genótipos com maior peso do fruto foram os que obtiveram maior rendimento de polpa, confirmando que as variáveis espessura da casca e tamanho do fruto estão diretamente relacionadas com o rendimento. A variação nos valores de sólidos solúveis totais foi afetada pela influência do ambiente e do genótipo.

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“…For feijoa, fruit size, pulp yield, and excellent acidified taste are prime characteristics for consumption and, therefore, for genetic breeding. According to Donazzolo et al (2017), the weight and the diameter of the fruit are the main characteristics related to pulp yield. Although these characteristics are very variable among genotypes, they are the main characteristics used to differentiate individuals (Puppo et al, 2014).…”

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confidence: 99%

Characterization of Phenotypic Diversity of Feijoa Fruits of Germplasm Accessions in Brazil

Sánchez-Mora¹,

Saifert

Ciotta

et al. 2019

Agrosystems Geosci & Env

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The aim of the present work was to physicochemically characterize the fruits of accessions of feijoa [Acca sellowiana (O. Berg.) Burret] active germplasm bank (BAG), located in São Joaquim, Brazil. The identification of accessions with desirable fruit traits will facilitate species breeding and cultivation. During seven harvests (2004-2017), 10 fruits per plant of 229 accessions were evaluated for fruit diameter, length and weight, skin and pulp weight, skin thickness, pH, titratable acidity, and soluble solids content, in addition to the qualitative descriptors insertion of sepals, fruit shape, sheen of skin, vacuum, color of skin and pulp, and texture and roughness of the skin. Descriptive statistics, correlations, and a multivariate analysis were applied to better understand the nature and magnitude of the variables. The mean +1SD was used to identify the best accessions for breeding purposes. Active germplasm bank accessions revealed significant phenotypic diversity for the physicochemical characteristics of the fruits, and the year effect represented the largest contribution to the variance for all evaluated characteristics, except fruit length. The characteristics total fruit weight, fruit diameter, and skin thickness are strongly related to pulp yield (%). There is high phenotypic diversity in accessions of feijoa conserved in the São Joaquim BAG, which will allow different traits of this species to be genetically improved.

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Path analysis for selection of feijoa with greater pulp weight

Cited by 8 publications

References 12 publications

Associations between morphometric variables and weight and yields carcass in PirapitingaPiaractus brachypomus

Associations between morphometric variables and weight and yields carcass in PirapitingaPiaractus brachypomus

Avaliação de frutos de goiabeira-serrana cultivados no meio oeste de Santa Catarina, Brasil

Characterization of Phenotypic Diversity of Feijoa Fruits of Germplasm Accessions in Brazil

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