Suscetibilidade de genótipos de maracujazeiro-azedo à septoriose em casa de vegetação

Kudo, Angela Sathiko; Peixoto, José Ricardo; Junqueira, N. T. V.; Blum, Luiz Eduardo Bassay

doi:10.1590/s0100-29452012000100027

Cited by 11 publications

(6 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…For this reason, not only statistical but also genetic analyses are very useful tools in breeding programs with focus on disease resistance. In this context, any minimal differences between and within genotypes are useful in providing information for resistance selection and should not be underestimated or discarded (JUNQUEIRA et al, 2003;KUDO et al 2012, FUHRMANN et al 2014).…”

Section: Resultsmentioning

confidence: 99%

Reaction of yellow passion fruit to passion fruit woodiness disease and to bacterial spot

Costa¹,

Nogueira²,

Peixoto³

et al. 2018

Biosci. J.

Self Cite

View full text Add to dashboard Cite

The use of resistant varieties is a promising strategy for passion fruit woodiness disease (PWD) (Cowpea aphid-borne mosaic virus -CABMV) and bacterial spot (Xanthomonas axonopodis pv. passiflorae -Xap) control in yellow passion fruit (Passiflora edulis Sims). This study aimed at evaluating the reaction of nine genotypes of yellow passion fruit to both mechanically inoculated CABMV and Xap, under protected cultivation. The experiment was conducted using a randomized block design with subdivided parcels comprised of nine treatments, four repetitions, six replications per genotype, and five evaluations. Disease incidence (% plants infected) and severity (% of total leaf area with necrotic lesions or leaf symptoms) were calculated at 7-day intervals. All genotypes evaluated were classified as moderately susceptible to PWD. MAR20#10, MAR20#41, and Rosa Intenso were classified as moderately resistant to bacterial spot whereas the remaining genotypes were classified as moderately susceptible. Genotypes Rosa Intenso, MAR20#41, MAR20#15, and MSCA stood out for presenting the lowest PWD mean severity scores as well as the greatest numbers of plants presenting resistance to PWD after five evaluations. MAR20#10, MAR20#41, and Rosa Intenso demonstrated the lowest bacterial spot mean severity scores. Among the genotypes selected, Rosa Intenso and MAR20#41 were the most promising genotypes for presenting the lowest severity scores for both PWD and bacterial spot disease.

show abstract

Section: Resultsmentioning

confidence: 99%

Reaction of yellow passion fruit to passion fruit woodiness disease and to bacterial spot

Costa¹,

Nogueira²,

Peixoto³

et al. 2018

Biosci. J.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Studies have pointed towards a difficulty in distinguishing genotypes for disease resistance. Meanwhile, it is important to recognize that in breeding programs with focus on disease resistance, any minimal difference between and within progenies or genotypes is useful in providing information for resistance selection (Kudo et al 2012, Fuhrmann et al 2014.…”

Section: Ap Costa Et Almentioning

confidence: 99%

Yellow passion fruit reaction to Xanthomonas axonopodis pv. passiflorae and to Cowpea aphid-borne mosaic virus

Costa

Nogueira

Peixoto

et al. 2018

Crop Breed. Appl. Biotechnol.

Self Cite

View full text Add to dashboard Cite

Yellow passion fruit (Passiflora edulis Sims) yield and longevity have been drastically reduced by bacterial spot (Xanthomonas axonopodis pv. passiflorae -Xap) and passion fruit woodiness disease (PWD) (Cowpea aphid-borne mosaic virus -CABMV). This study was aimed at evaluating the reaction of 11 genotypes of yellow passion fruit, based on the reaction of their progenies, to both mechanically inoculated Xap and CABMV, under greenhouse conditions. There was a progressive increase in bacterial spot and PWD severity with time. BRS Gigante Amarelo, MAR20#12, and MAR20#34 were selected as the progenies with lowest bacterial spot severity and disease progress over time. MAR20#2005, EC-L-7, UnB2015-1, and EC-3-0 presented the lowest PWD severity and disease progress over time. These progenies, along with individual plants from other progenies in which disease severity was significantly low until the last evaluation, will be cloned and tested again for Xap and CABMV, including other isolates.

show abstract

“…The septoriosis quantification in sour passion fruit has been performed by descriptive scales (Kudo et al, 2012, Vilela, 2013, Castro, 2015. These scales are subjective, not permitting the visual acuity adjustment in assessing severity levels (Campbell & Madden, 1990), impairing the accurate quantification of the injured area (Santos et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

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

Costa¹,

Peixoto²,

Blum³

et al. 2019

Agraria

View full text Add to dashboard Cite

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.

show abstract

Suscetibilidade de genótipos de maracujazeiro-azedo à septoriose em casa de vegetação

Cited by 11 publications

References 1 publication

Reaction of yellow passion fruit to passion fruit woodiness disease and to bacterial spot

Reaction of yellow passion fruit to passion fruit woodiness disease and to bacterial spot

Yellow passion fruit reaction to Xanthomonas axonopodis pv. passiflorae and to Cowpea aphid-borne mosaic virus

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

Contact Info

Product

Resources

About