A standard area diagram set to aid estimation of the severity of Asiatic citrus canker on ripe sweet orange fruit

Braido, Ricardo; Gonçalves-Zuliani, Aline Maria Orbolato; Nocchi, Paula Thaís Requena; Belasque, José; Janeiro, Vanderly; Bock, Clive H.; Nunes, William Mário de Carvalho

doi:10.1007/s10658-014-0544-0

Cited by 10 publications

(6 citation statements)

References 24 publications

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“…The LCCC (ρ c ) combines elements of accuracy and precision in order to determine the agreement between estimated and actual values (Lin, 1989) and has been used with great success in recent studies of SADs validation (Schwanck & Del Ponte, 2014, Braido et al, 2015, Dolinski et al, 2017, Sachet et al, 2017. The LCCC confirmed the previously presented results, demonstrating that the accuracy and precision of the raters were improved when aided by the SADs in comparison to the non-aided evaluations (Table 4).…”

Section: /9supporting

confidence: 68%

Standard area diagram set for quantification of septoriosis in fruit of sour passion fruit

Costa¹,

Peixoto²,

Blum³

et al. 2019

Agraria

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A standard area diagram set (SADs) for severity evaluation of septoriosis (Septoria passiflorae) in fruit of sour passion fruit (Passiflora edulis Sims) was developed and validated in this study. The SADs presented eight severity levels (0.3; 0.5; 1; 2; 4; 10; 18; and 30%). For its validation, 20 raters were divided into groups (G1 and G3, inexperienced; G2 and G4, experienced) who initially estimated the disease severity without the aid of the SADs. Subsequently, G1 and G2 performed the second evaluation without the SADs, and G3 and G4 completed the second evaluation with the proposed SADs for each disease. The accuracy and precision of the evaluations were determined by simple linear regression and by Lin's concordance correlation coefficient. The proposed SADs allowed accurate and precise quantification of septoriosis severity, increasing the agreement between estimated and actual values. The increase in accuracy and precision in the non-aided groups, when present, was less pronounced than those increments observed in the SADs-aided groups. Lin's concordance correlation coefficient confirmed the increases in accuracy and precision detected by the linear regression analysis.Escala diagramática para a quantificação da severidade da septoriose em frutos do maracujazeiro azedo RESUMO: Uma escala diagramática para a avaliação da severidade da septoriose (Septoria passiflorae) em frutos do maracujazeiro azedo (Passiflora edulis Sims) foi desenvolvida e validada neste estudo. A escala diagramática apresentou oito níveis de severidade (0,3; 0,5; 1; 2; 4; 10; 18; e 30%). Para a sua validação, os 20 avaliadores foram divididos em grupos (G1 e G3, sem experiência; G2 e G4, com experiência), que inicialmente estimaram a severidade da doença sem auxílio da escala. Posteriormente, G1 e G2 fizeram outra avaliação sem escala, e G3 e G4 realizaram a avaliação com a escala proposta. A acurácia e a precisão das estimativas foram determinadas por regressão linear simples e pelo coeficiente de correlação de concordância de Lin. A escala diagramática proposta permitiu quantificar a severidade da septoriose de forma acurada e precisa, aumentando a concordância entre os valores estimados e os reais. O aumento da acurácia e precisão nos grupos que realizaram dupla avaliação sem escala, quando ocorreu, foi mais discreto que os incrementos observados nos grupos que utilizaram a escala. A análise de concordância de Lin confirmou os incrementos da acurácia e precisão detectados pela análise de regressão linear. Palavras-chave: frutos; Passiflora edulis Sims; fitopatometria; Septoria passifloraeStandard area diagram set for quantification of septoriosis in fruit of sour passion fruit Rev. Bras.

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Section: /9supporting

confidence: 68%

Standard area diagram set for quantification of septoriosis in fruit of sour passion fruit

Costa¹,

Peixoto²,

Blum³

et al. 2019

Agraria

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show abstract

“…The increase in accuracy and precision of visual estimates, particularly those performed by inexperienced raters, has already been reported for different SADs developed for the evaluation of bacterial spot in several crops (Braido et al, 2015;Duan, Zhao, Wang, & Yang, 2015;Nuñez et al, 2017). These diagrams have been used directly in breeding programs, aiding in disease resistance and genotype selection evaluations (Berrueta, Gimenez, Galvan, & Borges, 2016;Varago, Citadin, Sachet, Penso, & Raseira, 2017).…”

Section: Introductionmentioning

confidence: 70%

Standard Area Diagram Set for Bacterial Spot Quantification in Entire-Margined Leaves of Sour Passion Fruit

Costa¹,

Peixoto²,

Blum³

et al. 2019

JAS

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This study developed and validated a standard area diagram set (SADs) to aid in the estimation of bacterial spot (Xanthomonas axonopodis pv. passiflorae) severity in entire-margined leaves of sour passion fruit (Passiflora edulis Sims). The SADs consisted of eight severity levels (3; 6; 12; 25; 50; 77, and 88%). For its validation, 20 raters, who initially estimated the disease severity without the aid of the SADs, were divided into groups (G1 and G3, inexperienced; G2 and G4, experienced). Subsequently, G1 and G2 performed the second evaluation without the SADs, and G3 and G4 completed the second evaluation using the proposed SADs. The accuracy and precision of the assessments were determined by simple linear regression and by the Lin’s concordance correlation coefficient. The increase in accuracy was confirmed by the 80% constant error-free estimates (G3 and G4) and 100% (G3) and 80% (G4) systematic error-free estimates when the SADs was used. Precision increased with the increase in the coefficient of determination, the reduction in absolute errors, and the increase in the reproducibility of the estimates between pairs of raters. Inexperienced raters benefited the most from the use of the SADs. The increase in the accuracy and precision in the non-aided groups, when present, was less pronounced than those increments observed in the SADs-aided groups. The Lin’s concordance correlation coefficient confirmed the increased accuracy and precision detected by the linear regression analysis and indicated increased agreement between the estimated and actual values of disease severity in the SADs-aided groups.

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“…The use of SADs has contributed to increasing the accuracy and precision of estimates of disease severity caused by Xanthomonas to other plants, such as grapes (NASCIMENTO et al, 2005), peach (CITADIN et al, 2008), common beans (LIMA et al, 2013, orange (BRAIDO et al, 2015), and tomato (DUAN et al, 2015). Despite the great relevance of diseases in yellow passion fruit crops, the only SADs validated for diseases quantification in this species is the one developed by Fischer et al (2009) for the evaluation of anthracnose in fruits.…”

Section: Introductionmentioning

confidence: 99%

Standard area diagram set for bacterial spot assessment in fruits of yellow passion fruit

et al. 2018

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This study developed and validated a standard area diagram set (SADs) for severity assessment of bacterial spot (Xanthomonas axonopodis pv. ) in passifloraefruits of yellow passion fruit (Passiflora edulis). The SADs consisted of eight severity levels (1%; 3%; 5%; 10%; 21%; 38%; 65%; and 80%). For its validation, 20 raters, who initially estimated the disease severity without the aid of the SADs, were divided into groups (G1 and G3, inexperienced; G2 and G4, experienced). Subsequently, G1 and G2 performed the second evaluation without the proposed SADs, and G3 and G4 completed the second evaluation using the proposed SADs. The accuracy and precision of the assessments were determined by simple linear regression and by the Lin’s concordance correlation coefficient. The increase in the accuracy was confirmed by the reduction in the constant and systematic errors, indicating that the estimated severities were close to the actual values when the SADs was used. Inexperienced raters benefited the most from the use of the SADs, and 60% and 100% of them presented constant and systematic error-free estimates, respectively. Precision increased with the increase in the coefficient of determination, the reduction in absolute errors, and the increase in the reproducibility of the estimates between pairs of raters.

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A standard area diagram set to aid estimation of the severity of Asiatic citrus canker on ripe sweet orange fruit

Cited by 10 publications

References 24 publications

Standard area diagram set for quantification of septoriosis in fruit of sour passion fruit

Standard area diagram set for quantification of septoriosis in fruit of sour passion fruit

Standard Area Diagram Set for Bacterial Spot Quantification in Entire-Margined Leaves of Sour Passion Fruit

Standard area diagram set for bacterial spot assessment in fruits of yellow passion fruit

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