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SELECTION VIA MIXED MODELS IN SEGREGATING GUAVA FAMILIES BASED ON YIELD AND QUALITY TRAITS Rev. Bras. Frutic.
QUINTAL,SILVANA SILVA RED; VIANA,ALEXANDRE PIO; CAMPOS,BIANCA MACHADO; VIVAS,MARCELO; AMARAL JÚNIOR,ANTONIO TEIXEIRA DO.
ABSTRACT Aiming at the generation of new guava varieties with superior attributes, we conducted this study adopting the REML/BLUP procedure at individual level. Seventeen segregating guava families were evaluated in a randomized-block design with two replicates and 12 plants per plot. Families were obtained after controlled biparental pollination. The studied individuals showed high genotypic variance for fruit weight (FW), total yield (YLD), and ascorbic acid content (AAC). The heritability coefficients of the mean of progenies led to high progeny-selection accuracy for pulp yield (PY), soluble solids content (SSC), in addition to FW, YLD, and AAC; moderate accuracy for fruit acidity (FA) and SSC/FA ratio; and low accuracy for mesocarp thickness (MT) and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Psidium guajava; Variability; REML/BLUP.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452017000200802
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HETEROTIC GROUP FORMATION IN PSIDIUM GUAJAVA L. BY ARTIFICIAL NEURAL NETWORK AND DISCRIMINANT ANALYSIS Rev. Bras. Frutic.
CAMPOS,BIANCA MACHADO; VIANA,ALEXANDRE PIO; QUINTAL,SILVANA SILVA RED; BARBOSA,CIBELLE DEGEL; DAHER,ROGÉRIO FIGUEIREDO.
ABSTRACT The present study aimed at evaluating the heterotic group formation in guava based on quantitative descriptors and using artificial neural network (ANN). For such, we evaluated eight quantitative descriptors. Large genetic variability was found for the eight quantitative traits in the 138 genotypes of guava. The artificial neural network technique determined that the optimal number of groups was three. The grouping consistency was determined by linear discriminant analysis, which obtained classification percentage of the groups, with a value of 86 %. It was concluded that the artificial neural network method is effective to detect genetic divergence and heterotic group formation.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Guava; Genetic variability; Multivariate analysis; Heterotic group.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452016000100151
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RELATIONSHIP BETWEEN YIELD AND FRUIT QUALITY OF PASSION FRUIT C03 PROGENIES UNDER DIFFERENT NUTRITIONAL LEVELS Rev. Bras. Frutic.
SANTOS,CARLOS LACY; VIANA,ALEXANDRE PIO; FREITAS,MARTA SIMONE MENDONÇA DE; CARVALHO,ALMY JUNIOR CORDEIRO DE; RODRIGUES,DANIELE LIMA.
ABSTRACT The present study was conducted to evaluate different fertilization-management strategies in ten progenies of passion fruit from the third recurrent selection cycle and their effects on yield and fruit-quality traits. For this purpose, we adopted the strategy of correlations analysis, using the phenotypic and path correlations in different environmental conditions characterized by three levels of fertilization. The trial was set up as a randomized-block design in a split-plot arrangement with progenies representing the plots and three levels of potassium-nitrogen fertilization as the sub-plots, with three replicates. Path analysis showed that number of fruits was the variable of highest correlation with fruit diameter at fertilization I. Fruit...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Pomology; Nitrogen; Potassium; Passiflora edulis Sims; Path analysis.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452017000203002
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Resistance to Cowpea aphid-borne mosaic virus in in vitro germinated genotypes of Passiflora setacea Rev. Bras. Frutic.
SACOMAN,NAYARA NIELE; VIANA,ALEXANDRE PIO; CARVALHO,VIRGINIA SILVA; SANTOS,EILEEN AZEVEDO; RODRIGUES,ROSANA.
ABSTRACT Passion fruit (Passiflora edulis) is a fruit species of great relevance for Brazilian economy. However, it is highly susceptible to the Cowpea aphid-borne mosaic virus (CABMV). The species P.setacea, on the other hand, is resistant to the disease. The present study aimed to identify CABMV-resistant P. setacea genotypes for the introgression of genes into sour passion fruit genetic breeding programs. The seeds of passion fruit genotypes were germinated in vitro in MS culture medium. The seedlings were acclimatized in a growth chamber at the temperature of 27 ± 2ºC, photoperiod of 16:8 hours and 80% of relative humidity. Thirty plants of each genotype were mechanically inoculated with extract prepared from leaves collected from passion fruit plants...
Tipo: Info:eu-repo/semantics/article Palavras-chave: PTA-ELISA; Fruit hardening virus; Passion fruit; Plant resistance.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452018000100802
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SELEÇÃO RECORRENTE INTRAPOPULACIONAL EM MARACUJAZEIRO-AZEDO VIA MODELOS MISTOS Rev. Bras. Frutic.
FERREIRA,RULFE TAVARES; VIANA,ALEXANDRE PIO; SILVA,FERNANDO HIGINO DE LIMA E; SANTOS,EILEEN AZEVEDO; SANTOS,JARDEL OLIVEIRA.
RESUMO O maracujazeiro pertence ao gênero Passiflora, considerado o de maior importância econômica da família Passifloraceae. O objetivo do trabalho foi estimar para o maracujazeiro-azedo parâmetros e valores genotípicos pelo procedimento REML/BLUP em nível de progênie. Foram avaliadas 27 progênies de meios-irmãos oriundas do segundo ciclo de seleção recorrente conduzido na UENF, selecionadas via índice de seleção. As características avaliadas foram: número de frutos por parcela (NF); massa total de frutos por parcela (MTF) e massa média de frutos (MMF). Os valores genéticos foram estimados por meio do Software SELEGEN, utilizando o procedimento REML/BLUP. Nas estimativas dos parâmetros genéticos via REML, as duas características ligadas diretamente à...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Passiflora edulis Sims; Modelos mistos; Seleção recorrente.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452016000100158
Registros recuperados: 5
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