| Titles |
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English :
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Interrelationship between Pratylenchus brachyurus, Aspergillus flavus and aflatoxin production in peanut with some special control means
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Arabic :
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العلاقة المتداخلة بين نيماتودا التقرح و فطر الأسبرجيلس و إنتاج الأفلاتوكسينات في الفول السوداني وبعض طرق المقاومة
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| Abstract |
Occurrence of aflatoxins in peanut is the most important barrier in exporting Egyptian peanut especially to European Union Market. A study was conducted to survey plant parasitic nematodes and soil-borne fungi, as well as, a monitoring of aflatoxin levels in peanut samples collected from some localities in Fayoum, Giza, Ismaillia, Nubaria and Sharkia. Both Pratylenchus brachyurus and Aspergillus flavus were recorded in peanut fields of all surveyed localities with reference to Nubaria locality which had the highest frequency of occurrence (F.O.%) in both P. brachyurus and A. flavus in the collected samples, whereas the lowest (F.O.%) of nematode, fungi and the aflatoxins were found in Fayoum. A positive correlation of P. brachyurus and A.flavus was also recorded. Under greenhouse conditions, increasing inoculum level of P. brachyurus (500, 1000, 1500 and 2000 nematodes / seedling) caused increasing in F.O.% of A. flavus as well as aflatoxin production. A comparative study was also conducted for minimizing aflatoxin production in peanut through controlling P. brachyurus using NaCl powder (20, 40, 60 & 80 mg/kg) and two recommended nematicides (Furadan10% G and Mocap 10%G). A positive correlation between the inoculums levels of P. brachyurus and F.O.% of A. flavus as well as aflatoxin production was found whereas increasing NaCl concentrations showed a negative effect on aflatoxin production and decreasing the number of nematodes; P. brachyurus in soil and roots. The F.O.% of A. flavus and the mean of aflatoxin ppb of were also decreased. Such effect was obtained by using nematicides. No A. flavus was found at concentrations of 60 & 80 mg/kg of NaCl and as a result no amount of aflatoxin detected. At concentrations 20 & 40 mg/kg of NaCl very satisfactory inhibition was appeared.
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| Publication year |
2006
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| Pages |
667-685
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| Organization Name |
Plant Pathology Research Institute (PPATHRI)
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| Country |
Egypt
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| serial title |
J. Adv. Agric. Res.
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| Volume |
11
. 4
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| Author(s) from ARC |
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| Publication Type |
Journal
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