Numbers of Botrytis fabae conidia dispersed in plots of winter-sown field beans in which chocolate spot developed were monitored with vertical cylinder and. Chocolate spot (Botrytis fabae) is a devastating disease of faba bean and reduces its production and productivity. Three controlled condition experiments were. Botrytis fabae Sardina Botryotinia fuckeliana (de Bary) Wetzel. Mycologia, FUNGI IMPERFECTI, HYPHOMYCETALES, MONILIACEAE. Crops attacked: horse.

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It is replaced each time there is a query done. Foliar diseases of faba beans: At these temperatures, lesions enlarged rapidly and centrally deep black with brown margin spots that fused with time to form larger lesions. Faba bean Vicia faba L. The patch specimens were placed on the surface of potato dextrose agar PDA medium in Petri dishes [ 26 ].

Register faae name species, genus, family, etc Register new type specimen of existing taxa epitype, neotype, etc.

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No conidial and sclerotial production was recorded at lower and extreme temperatures. Inoculation was made on MnPDA medium for sporulation evaluation.

Research Article Open Access. botryfis

EU pesticides database www. The average rate of lesion expansions varied from 0.

Sanctioned by Sanctioning name Validated by Type specimen or ex type More specimens Human pathogenicity code Plant pathogenicity code Code toxicity. Plant Disease Management Reports.

fabaf Radial mycelium growth increased from In connection with the impact of temperature on resistance expression, Fetch [ 57 ] noted the loss of resistance genes in oat lines at higher temperature and that observation on rust reaffirms the complex interaction between host, pathogen, and environment that determine the host response to pathogen infection.


When the conidia germinatesmall lesions are formed on previously healthy leaves. Uninoculated controls developed no symptoms.

A damaging disease developed on commercial fava botrttis Vicia faba L. The non-aggressive form of the disease, although dramatic in appearance, does not usually affect yield significantly. Guidelines Upcoming Special Issues.

chocolate spot: broad bean (Botrytis fabae)

Effects of temperature on pathogenic fungi growth, sporulation, sclerotial formation and morphology is well documented [ 3738 ]. BoxDire Dawa, Ethiopia.

This is used when first reloading the page. For further information, we recommend you visit the following resources: The experiment was factorial arranged in a CRD with 4 replications Petri dishes containing two leaflets per faba bean variety. Views Read Edit View history. Host-Plant Resistance Resistance in V.

The radial growth followed a linear increasing trend at each incubation temperature over time Figure 1. Visual observations were made with regard to colony growth two days after inoculation DAI.

The disease was also confirmed on fava bean grown as a winter cover crop in the same coastal area of California. A detached leaf test has been widely used for resistance screenings, analyzing components of resistance and assaying different factors affecting the response of V.

Infected seed may be stored with healthy seed and infect a new crop. However, increasing temperature could affect the pathogen to produce more propagules for subsequent infection and thus conidia must survive exposures to high temperature and low relative humidity that occur between deposition and favorable infection periods.

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Two symptom types were observed. Among biotic stresses, diseases have always been the major limiting factors for faba bean cultivation. Harrison [ 20 ] indicated that B. Following days of incubation, fragments of the edges of freshly growing mycelia were transferred into new dishes of faba bean dextrose agar, FDA [ 27 ]. Rather to the host-pathogen interaction and these have to be further elucidated with known resistance botrytos s in the host and virulence gene s in the pathogen using a wide range of temperature levels and other environmental factors.

Botrytis fabae – Wikipedia

A number of factors, such as physiological and environmental conditions, are known to influence plant pathosystems, either by affecting the host, the pathogen, or their interaction [ 11 ] and hence crop yield loss.

BoxGondar, Ethiopia. Reduced infection and disease development vabae the present study could be due to several factors including inhibition of mycelial growth and spore mortality at higher temperatures, genetic background of the faba bean varieties used, isolate virulence, leaf-wetness duration, and the interaction among such fabas. The major ones include ascochyta blight Ascochyta fabae Speg. Progress of chocolate spot on whole plants was much slower than in experiment on excised leaves.

Climatic dynamics also indicated that temperature botdytis host resistance; and is known to be of great importance in the process of infection [ 2023 ]. Run Zhang 1 and Dr.