Systemic Resistance in Snap Bean (Phaseolus vulgaris L.) Elicited by Some Chemicals and Biotic Inducers Against White Mold Disease Caused by Sclerotinia sclerotiorum

2018 ◽  
Vol 46 (2) ◽  
pp. 61-84
Author(s):  
Ehab Sarhan ◽  
Ehab El-Far ◽  
Azza Ebrahiem
Keyword(s):  
Phaseolus Vulgaris ◽  
Sclerotinia Sclerotiorum ◽  
White Mold ◽  
Systemic Resistance ◽  
Phaseolus Vulgaris L ◽  
Snap Bean

Numbers and distribution of apothecia of Sclerotinia sclerotiorum in relation to white mold of white bean (Phaseolus vulgaris)

1988 ◽  
Vol 66 (2) ◽  
pp. 247-252 ◽  
Author(s):  
G. J. Boland ◽  
R. Hall
Keyword(s):  
Phaseolus Vulgaris ◽  
Sclerotinia Sclerotiorum ◽  
Negative Binomial Distribution ◽  
Negative Binomial ◽  
Disease Incidence ◽  
White Mold ◽  
Spatial Distributions ◽  
Phaseolus Vulgaris L ◽  
Field Plot ◽  
White Bean

Relationships between the distribution and numbers of apothecia of Sclerotinia sclerotiorum (Lib.) de Bary and the distribution and incidence of white mold of white bean (Phaseolus vulgaris L.) were investigated in a field plot at Arkell, Ont., in 1981 and 1982. The spatial distributions of both apothecia and disease were aggregated and were most consistently described by the negative binomial distribution, although the Poisson, Poisson binomial and logarithmic with zeros distributions were also significant for some sampling dates. Numbers of apothecia were correlated with disease incidence within areas 1.4 (r = 0.07–0.67), 36 (r = 0.11–0.72), and 108 m2 (r = 0.21–0.95). The quantitative relationships between apothecia within a field of beans and the incidence of white mold may be useful in predicting the disease.

scholarly journals Screening for Partial Physiological Resistance to White Mold in Dry Bean Using Excised Stems

1992 ◽  
Vol 117 (2) ◽  
pp. 321-327 ◽  
Author(s):  
P.N. Miklas ◽  
K.F. Grafton ◽  
B.D. Nelson
Keyword(s):  
Phaseolus Vulgaris ◽  
Sclerotinia Sclerotiorum ◽  
Field Resistance ◽  
White Mold ◽  
Lesion Length ◽  
Laboratory Procedure ◽  
Dry Bean ◽  
Snap Bean ◽  
Breeding Lines ◽  
Physiological Resistance

A laboratory procedure was tested to determine whether excised stems would allow a reliable indication of partial physiological resistance (PPR) to white mold [Sclerotinia sclerotiorum (Lib.) deBary] in dry bean (Phaseolus vulgaris L.). Excised stems from 11- and 28-day-old plants were inoculated with growing mycelium of S. sclerotiorum, incubated for 4 to 7 days (11- and 28-day assays, respectively), then assayed for lesion length (LL). A total of 15 bean genotypes were screened for PPR, as indicated by LL. Significant (P < 0.05) differences among LL means of small- and medium-seeded bean genotypes were detected in the 28-day assay, whereas only LL means among medium-seeded genotypes. differed significantly (P < 0.05) in the n-day assay. `Bunsi', `C-20', `Sierra', `Topaz', and snap bean breeding lines NY 5262, NY 5394, and NY 5403 had the highest PPR and `Upland', D76125, and `UI-114' the lowest. The results from both assays were repeatable. A moderately high correlation (r = 0.68, P < 0.02) was observed between PPR and field resistance. The 28-day assay has potential for evaluating dry bean germplasm for PPR to white mold disease caused by S. sclerotiorum. A 28-day assay also was used to measure virulence of 18 isolates of S. sclerotiorum. The 18 isolates did not differ (P < 0.05) for virulence when measured by LL. The lack of any genotype × isolate interaction for LL indicated lack of host-pathogen specificity.

Bacillus sp. FSQ1: a Promising Biological Control Agent Against Sclerotinia sclerotiorum, the Causal Agent of white Mold in Common Bean (Phaseolus vulgaris L.)

2021 ◽  
Vol 48 (6) ◽  
pp. 729-739
Author(s):  
María Fernanda Villarreal-Delgado ◽  
Fannie Isela Parra-Cota ◽  
Luis Alberto Cira-Chávez ◽  
María Isabel Estrada-Alvarado ◽  
Sergio de los Santos-Villalobos
Keyword(s):  
Biological Control ◽  
Phaseolus Vulgaris ◽  
Common Bean ◽  
Sclerotinia Sclerotiorum ◽  
Biological Control Agent ◽  
Control Agent ◽  
Causal Agent ◽  
White Mold ◽  
Bacillus Sp ◽  
Phaseolus Vulgaris L

scholarly journals FUNGIGAÇÃO NO CONTROLE DO MOFO BRANCO E PRODUTIVIDADE DO FEIJOEIRO EM CONDIÇÕES DE CERRADO BRASILEIRO

Irriga ◽  
2010 ◽  
Vol 15 (2) ◽  
pp. 159-172 ◽  
Author(s):  
Fábio Venegas ◽  
João Carlos Cury Saad
Keyword(s):  
Phaseolus Vulgaris ◽  
Sclerotinia Sclerotiorum ◽  
Statistical Processing ◽  
Crop Productivity ◽  
White Mold ◽  
Phaseolus Vulgaris L ◽  
Brazilian Savannah ◽  
Progress Curve ◽  
Grade Scale ◽  
Application Techniques

 O presente estudo objetivou determinar a severidade da doença mofo branco (Sclerotinia sclerotiorum (Lib.) de Bary) e os componentes de produção do feijoeiro (Phaseolus vulgaris L.), var. Pérola, submetido a aplicação do fungicida procimidone (Sialex 500), via fungigação (pivô central) e pulverizador automotriz (Uniport). O estudo foi realizado sob condições de produção comercial em campo, no município de Primavera do Leste - MT.  O experimento constou de 5 tratamentos (com 4 repetições de 4 ha cada), sendo 4 deles envolvendo duas aplicações de procimidone (1,2 kg ha -1 cada aplicação), aos 42 dias e aos 52 dias após o plantio (DAP), e um deles sem aplicação deste produto, com delineamento experimental de blocos casualizados.  Foram testadas as lâminas de água de 5,5 e 11,0  mm na aplicação via pivô central, proporcionando assim volume de calda de 55.000 e 110.000 L ha -1, respectivamente, e os volumes de 120 e 200 L ha -1 de calda no pulverizador automotriz. O critério adotado em todas as avaliações da severidade da doença foi o da porcentagem da área foliar lesionada utilizando escala diagramática de severidade da doença mofo branco. Os  valores foram usados para calcular a área abaixo da curva de progresso de doença (AACPD). Foram analisados também, o número dos apotécios do fungo durante o ciclo da cultura e o peso dos escleródios residuais do patógeno na colheita. Nesta ocasião foram avaliados os seguintes componentes da produção da cultura: número de plantas por parcela (stand final), número de vagens por planta, número de grãos por vagem, peso médio de 200 grãos e produtividade de grãos. Os valores da AACPD, apotécios aos 42, 49 e 56 DAP, escleródios em 2 kg de solo e  os parâmetros de produtividade da cultura foram submetidos à análise de variância e ao teste de comparação de médias de Tukey no nível de 5 % de significância, utilizando o programa computacional STAT. Nas condições experimentais em que se desenvolveu o trabalho, não foram constatadas diferenças significativas entre as diferentes técnicas de aplicação estudadas em relação ao parâmetros de produtividade, porém, melhores resultados de controle da doença mofo branco, menor número de apotécios por m2 aos 49 e 56 DAP e menor peso dos escleródios residuais na colheita foram obtidos com a aplicação do fungicida via pivô central, independentemente do volume de calda utilizado.   UNITERMOS: Phaseolus vulgaris L., Sclerotinia sclerotiorum (Lib.) de Bary, fungigação.             VENEGAS, F; SAAD, J. C. C.  WHITE MOLD CONTROL USING FUNGIGATION AND YIELD BEAN IN BRAZILIAN SAVANNAH CONDITIONS.     2 ABSTRACT              The aim of this research was to evaluate the white mold severity (Sclerotinia sclerotiorum (Lib.) of Bary), bean production components and yield (Phaseolus vulgaris L.), variety Perola, according to the application of procimidone fungicide (Sialex 500), through fungigation (center pivot) and automotive sprayer (Uniport). The study was carried under field production commercial conditions, in Primavera do Leste - MT - Brazil. The experiment consisted of 5 treatments (with 4 repetitions of 4 ha each), all with two procimidone applications (1.2 kg ha-1 each application, same as, 0.6 kg a.i. per hectare) to the 42 and 52 days after seeding. The water depths of 5.5 and 11.0 mm were tested in the application through central pivot (this had your checked uniformity), providing volumes of 55.000 and 110.000 L ha-1, respectively,  and the volumes of 120 and 200 L ha-1 in the automotive sprayer. The severity of disease was evaluated by the percentage of the area affected by plant damage using diagramatic grade scale of white mold severity, as described by Azevedo (1998). The values were used to calculate the area under the disease progress curve (AUDPC). They were also analyzed, the number of the fungus apothecia during the crop cycle and the residual sclerotias weight in harvest. On this occasion, it was also evaluated the crop yield parameters: number of plants per plot (final stand), pods per plant, grains per pod, medium weight of 200 grains and productivity of grains. The AUDPC values, apothecia to 42, 49 and 56 days after seeding, sclerotias in 2 soil kg and the crop productivity parameters were submitted to the variance analysis and Tukey Test at 0.05 of probability. This test was also applied in the comparison among the different fungicide application methods, independent of spray volumes in each one. The statistical processing was accomplished by STAT program. The results showed that weren't differences among application techniques studied in relation to productivity parameters, however,  best white mold control, smaller apothecia number to 49 and 56 days after seeding and smaller weight of residual sclerotias in the harvest were obtained with the fungigation, independently of the spray volume used.   KEYWORDS: Phaseolus vulgaris L., Sclerotinia sclerotiorum (Lib.) de Bary, fungigation. 

ETIOLOGY OF BLACK POD DISEASE AND SEED COAT DISCOLORATION OF WHITE BEANS

1982 ◽  
Vol 62 (2) ◽  
pp. 277-284 ◽  
Author(s):  
J. C. TU
Keyword(s):  
Phaseolus Vulgaris ◽  
Sclerotinia Sclerotiorum ◽  
Seed Coat ◽  
Alternaria Alternata ◽  
White Mold ◽  
Phaseolus Vulgaris L ◽  
Early Maturing ◽  
Black Pod ◽  
Black Pod Disease

Alternaria alternata (Fr.) Keissler was identified as the cause of the black pod disease and greyish discoloration of the seed coat of white beans (Phaseolus vulgaris L.). The severity of pod discoloration varied from dark grey flecks or stipples to dark grey patches which later coalesced. Seeds from severely affected pods often showed varying degrees of discoloration, which persisted through processing. Benomyl and chlorothalonil sprays, used to control white mold (Sclerotinia sclerotiorum), significantly increased the incidence of discoloration. In vitro, A. alternata was insensitive to both fungicides. There was more black pod disease and seed-coat discoloration in the early maturing cultivar Seafarer, than in the late-maturing cultivar Fleetwood.

TOLERANCE TO WHITE MOLD (Sclerotinia sclerotiorum (Lib.) De Bary) IN EX RICO 23, A CULTIVAR OF WHITE BEAN(Phaseolus vulgaris L.)

1982 ◽  
Vol 62 (1) ◽  
pp. 65-69 ◽  
Author(s):  
J. C. TU ◽  
W. D. BEVERSDORF
Keyword(s):  
Phaseolus Vulgaris ◽  
Sclerotinia Sclerotiorum ◽  
Large Scale ◽  
Yield Loss ◽  
Disease Incidence ◽  
Disease Spread ◽  
White Mold ◽  
Phaseolus Vulgaris L ◽  
White Bean ◽  
Small Plot

Ex Rico 23, a cultivar of white bean (Phaseolus vulgaris L.) introduced into Canada from Columbia, showed tolerance to white mold (Sclerotinia sclerotiorum) in an Ontario White Bean Variety Test at a site having severe white mold infection in 1978. Other entries, including the recommended cultivars, Fleetwood, Kentwood and Seafarer, suffered severe white mold infection and yield loss. The tolerant characteristic of Ex Rico 23 was confirmed experimentally in 1980 in both small-plot and large-scale plantings. In a field with severe white mold infection in Fleetwood, Ex Rico 23 had consistently lower disease incidence and a slower rate of disease spread. The yield loss in 1980 for Ex Rico 23 was minimal, but for Fleetwood was approximately 25 and 50% in a small-plot and a large-scale planting, respectively. The application of benomyl for disease control did not significantly increase the yield of dry beans.

EX RICO 23 WHITE BEAN

1981 ◽  
Vol 61 (4) ◽  
pp. 1017-1018
Author(s):  
W.D. BEVERSDORF ◽  
D.J. HUME
Keyword(s):  
Phaseolus Vulgaris ◽  
Sclerotinia Sclerotiorum ◽  
Cooking Quality ◽  
White Mold ◽  
Field Bean ◽  
Agronomic Performance ◽  
Phaseolus Vulgaris L ◽  
Navy Bean ◽  
White Bean

Ex Rico 23 is a white (navy) bean (Phaseolus vulgaris L.) adapted to field bean production in southwestern Ontario. It exhibits much more tolerance to white mold (Sclerotinia sclerotiorum (Lib.) de Bary) than other cultivars, along with good agronomic performance and cooking quality.

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