The use of fungicide alternatives for controlling postharvest decay of strawberry and orange fruits

• Autorzy: El-Mougy N.S. , El-Gamal N. G. , Abdalla M. A.

Warianty tytułu

PL

Wykorzystanie alternatywnych środków (fungicydów) zapobiegających zgniliznom owoców truskawki i pomarańczy po zbiorach

• Języki publikacji: EN

Abstrakty

EN

Control measures of postharvest diseases of strawberry and navel orange fruits using hydrogen peroxide, calcium chloride and chitosan were evaluated under in vitro and in vivo conditions. All tested concentrations of chemicals used were able to reduce the linear growth and spore germination of B. cinerea; R. stolonifer; P. digitatum and P. italicum. Complete inhibition of linear growth and spore germination was obtained with concentrations of 1.5 and 2.0% of all treatments. Under storage conditions, significant reduction in descending order of mould incidence was observed in strawberry and orange fruits treated with ascending concentrations of calcium chloride, hydrogen peroxide and chitosan. Obtained data revealed significant reduction in mould incidence in fruits when treated by calcium chloride and chitosan 12h before artificial inoculation with the mould pathogens, while hydrogen peroxide showed the opposite result. The present study demonstrated that the application of hydrogen peroxide is superior to treatment with calcium chloride or chitosan enhanced the control activity against mould pathogens which as it expressed was as either percentage of diseased fruits or decay development as rotted tissue weight of strawberry and navel orange. The applied tested chemical might act as contact and systemic fungicides which have a protective or therapeutic effect.

PL

Działanie nadtlenku wodoru, chlorku wapnia i chitosanu w zapobieganiu gniciu truskawek i pomarańczy po zbiorze oceniono w warunkach in vitro i in vivo. Testowane preparaty we wszystkich badanych stężeniach zredukowały wzrost liniowy kultur i kiełkowanie zarodników grzybów: B. cinerea, R. stolonifer, P. digitatum i P. italicum. Całkowite zahamowanie nastąpiło przy stężeniach 1,5 i 2,0%. Podczas przechowywania obserwowano istotną, zwiększająca się wraz ze wzrostem stężenia testowanych środków, redukcję liczby gnijących truskawek i pomarańczy. Chlorek wapnia i chitosan zastosowane 12 godzin przed inokulacją, istotnie ograniczyły gnicie owoców, natomiast nie powodował tego nadtlenek wodoru. Uzyskane wyniki badań wskazują, że nadtlenek wodoru użyty po zastosowaniu chlorku wapnia lub chitozanu wyraźnie zwiększył aktywność preparatów ograniczających gnicie zarówno truskawek jak i pomarańczy. Zastosowane związki mogą dawać podobny efekt do kontaktowych i systemicznych fungicydów, które działają zapobiegawczo lub leczniczo.

• Wydawca: -
• Czasopismo: Journal of Plant Protection Research
• Rocznik: 2008
• Tom: 48
• Numer: 3
• Opis fizyczny: p.385-395,ref.

Twórcy

autor

El-Mougy N.S.

• Department of Plant Pathology, National Research Centre, El-Behoos St., 12622 Giza, Egypt

autor

El-Gamal N. G.

autor

Abdalla M. A.

Bibliografia

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