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Wyświetlanie 1-2 z 2
Tytuł:
The influence of Fusarium ear infection on the maize yield and mycotoxin content (Transylvania-Romania).
Autorzy:
Nagy, E.
Haş, V.
Haş, I.
Suciu, A.
Florian, V.
Powiązania:
https://bibliotekanauki.pl/articles/2199607.pdf
Data publikacji:
2011-12-20
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
maize ear rot
Fusarium infection
mycotoxin content
Opis:
Maize is the host for a large number of pathogens, which invade all of its organs from the germination until being harvest, ear and grain infection often persistent even during storage. Diseases, through their symptoms reduce significantly the quantity and the quality of yield, estimated between 7-17% but, in the favorable years for this disease, they can be much greater. Fusarium diseases reduce yield value and quality by massive accumulation of Fusarium mycelium biomass (about 85%) on grain and ears and by mycotoxin contamination such as deoxynivalenol (DON), zearalenone (ZEA) and fumonisins (FUM). In this paper are presented aspects regarding the reaction of some maize hybrids under Fusarium  spp. natural and artificial infections; the effect of Fusarium  ear infection on yield, grain chemical composition, and mycotoxin content; the correlation between ear rot disease degree and yield ability, starch, protein and fat content. ANOVA evidenced the significant influence of experimental factors: infection conditions with Fusarium spp., maize genotypes, and their interaction on expression of the disease degree, yield capacity, protein, starch, fat and DON content. Average yield losses ranged between 7,0-9,3% during the experimental period. The hybrids Turda Star and Turda Favorit were more resistant to Fusarium ear rot, and Turda 165 was the most susceptible one. The artificial infection of ear with Fusarium spp. determined significantly decrease of starch and fat content and increases the protein and DON content for the most part of maize hybrids. Between rot diseased kernels and DON content a positive correlation was determined.
Źródło:
Plant Breeding and Seed Science; 2011, 64; 35-44
1429-3862
2083-599X
Pojawia się w:
Plant Breeding and Seed Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Infection Process and Mycotoxin Production in Fusarium Culmorum-infected Maize Ears
Autorzy:
Oldenburg, Elisabeth
Ellner, Frank
Powiązania:
https://bibliotekanauki.pl/articles/2199599.pdf
Data publikacji:
2011-06-21
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
Acetyl-deoxynivaleno
deoxynivalenol
kernels
nivalenol
pathogenesis
rachis
red ear rot
zearalenone
Opis:
Red ear rot of maize is an important disease in Europe caused by toxigenic Fusarium species like F.  graminearum and F. culmorum. To get detailed information about the pathogenesis of the disease and the  Fusarium toxin production in infected ears a field study was conducted with maize which was artificially  inoculated with F. culmorum at the stage of female flowering. Every fortnight after inoculation, maize ears of  two varieties were harvested and analysed for the progress of visual signs of the disease and related Fusarium  toxin contamination. During the last harvest in mid October, external infection symptoms showing some small  pale or brown-marbled kernels with dark brown rachillae were only observed at the ear tip, whereas internal  symptoms visible within the rachis were much more pronounced and showed greyish –brownish or pink discolouration of the pith. The symptoms observed in rachis and kernels corresponded with the toxin contamination showing considerably higher concentrations in the rachis compared to the kernels and a top-down gradient from high to low toxin levels within the ear. This suggests that F. culmorum first infects the rachis from  the tip towards the bottom, as it subsequently does the kernels via the rachillae connected to the rachis. As  infection symptoms and mycotoxin production were much more pronounced in the rachis than in the kernels, red ear rot evaluation should be improved by observing signs of the disease in both kernels and the rachis.
Źródło:
Plant Breeding and Seed Science; 2011, 63; 59-66
1429-3862
2083-599X
Pojawia się w:
Plant Breeding and Seed Science
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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