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| Vettorazzi,Julio Cesar Fiorio; Santa-Catarina,Renato; Poltronieri,Tathianne Pastana de Sousa; Cortes,Diego Fernando Marmolejo; Azevedo,Alinne Oliveira Nunes; Miranda,Daniel Pereira; Santana,Josefa Grasiela Silva; Ramos,Helaine Christine Cancela; Pereira,Messias Gonzaga. |
| ABSTRACT: The growing demand for quality of papaya by the domestic and international markets requires the development of genotypes that are capable of incorporating traits, such as high yield and fruit quality. This study estimated the genetic parameters and the specific combining ability of F4 papaya lines crossed to the SS-72/12 tester to identify genotypes with higher genetic value for hybrid production. We evaluated 169 treatments consisting of 62 topcross hybrid combinations, 97 F5 lines, and 10 controls in a 13 × 13 lattice design with five replicates and two plants per plot. The following traits were evaluated: plant height (PH), stem diameter (SD), first-fruit insertion height (FFIH), number of marketable fruits (NMF), number of deformed fruits... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Carica papaya L.; Papaya breeding; Topcross; Genetic parameter. |
| Ano: 2021 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000201102 |
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| Cortes,Diego Fernando Marmolejo; Santa-Catarina,Renato; Azevedo,Alinne Oliveira Nunes; Poltronieri,Tathianne Pastana de Sousa; Vettorazzi,Julio Cesar Fiorio; Moreira,Nádia Fernandes; Ferreguetti,Geraldo Antônio; Ramos,Helaine Christine Cancela; Viana,Alexandre Pio; Pereira,Messias Gonzaga. |
| ABSTRACT: The selection of superior Carica papaya (L) genotypes depends on the availability of genetic variability and on the favorable and simultaneous response of the genotypes to those traits of most interest. However, manual phenotyping (MP) demands intensive labor, is time-consuming and expensive. The aim of the current study is to access the efficiency of image-based phenotyping (IBP) in estimating genetic parameters and in selecting F4 recombinant inbred lines. The genetic parameters and values were estimated in accordance with the REML/BLUB procedure and combined selection using the selection index based on standardized genetic values. The majority of traits accessed through IBP showed experimental coefficients of variation similar to those found... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Carica papaya; Digital phenotyping; Genetic gains; Genetic parameters. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162018000300208 |
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| Cortes,Diego Fernando Marmolejo; Catarina,Renato Santa; Barros,Gislanne Brito de Araújo; Arêdes,Fernanda Abreu Santana; Silveira,Silvaldo Felipe da; Ferreguetti,Geraldo Antônio; Ramos,Helaine Christine Cancela; Viana,Alexandre Pio; Pereira,Messias Gonzaga. |
| ABSTRACT Manual phenotyping for papaya Carica papaya (L) breeding purposes limits the evaluation of a great number of plants and hampers selection of superior genotypes. This study aimed to validate two methodologies for the phenotyping of morpho-agronomic plant traits using image analysis and fruit traits through image processing. In plants of the ‘THB’ variety and ‘UENF/Caliman-01’ hybrid two images (A and B) were analyzed to estimate commercial and irregularly shaped fruits. Image A was also used in the estimation of plant height, stem diameter and the first fruit insertion height. In ‘THB’ fruits, largest and smallest diameters, length, and volume were estimated by using a caliper and image processing (IP). Volume was obtained by water column... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Carica papaya; Phenomics; Digital image processing. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162017000400294 |
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| Moreira,Nádia Fernandes; Pereira,Telma Nair Santana; Catarina,Renato Santa; Cortes,Diego Fernando Marmolejo; Vettorazzi,Júlio Cesar Fiorio; Ramos,Helaine Christine Cancela; Viana,Alexandre Pio; Pereira,Messias Gonzaga. |
| ABSTRACT The aim of this study was to estimate the percentage of deformed fruits (carpelloid, pentandric, and bananoid), summer sterility, repeatability coefficients, and correlations among the variables for floral abnormalities; and select genotypes withthe lowest incidence of deformed fruits and summer sterility. In theexperiment, which involved 254 plants, traits were evaluated using the digital-phenotypic method and the obtained images were processed and analysed using ImageJ v1.48 software with the Cell Counter plugin. Summer sterility had the highest percentage of occurrence in the evaluated periods. Based on the quantificationof total abnormalities, the 30 genotypes with the lowest incidence offloral abnormalities were selected. Summer sterility is... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Carica papaya L.; Female sterility; Carpellody; ImageJ. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052019000200158 |
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