Control of postharvest rots of banana fruits by conidia and culture filtrates of Trichoderma asperellum

• Autorzy: Adebesin A A , Odebode C.A. , Ayodele A.M.

Warianty tytułu

PL

Zwalczanie pozbiorowych zgnilizn owocow banana konidiami i filtratami kultur Trichoderma asperellum

• Języki publikacji: EN

Abstrakty

EN

Banana fruits are highly perishable and prone to microbial infection that cause significant damage. Fungicides and pesticides that are used to control this infection are toxic to man and animals, hence there is the need for environmentally friendly control measures of fruit rot pathogens. Simultaneous inoculation of fruits with Trichoderma species and rot pathogens resulted in rot on the fingers, but rot produced by T. asperellum NG-T161 alone or in combination with the pathogens was reduced, compared to rot produced by the pathogens alone. Treatment of fruits with conidia and culture filtrates of T. asperellum NG-T161 for 30 min prior to inoculation with the pathogens provided a better control than their simultaneous application. Only Trichoderma species were recovered on plated portions of rotted tissues from inoculations with the pathogens and the antagonists on the fruits. At 50% (v/v) the filtrates inhibited the mycelial growth of Fusarium oxysporum and Colletotrichum musae by 49.7 and 60.3% respectively but Lasiodiplodia theobromae was not inhibited. T. asperellum strains were found to be mycoparasitic on banana fruit rot pathogens. Conidia and culture filtrates of T. asperellum NG-T161 controlled the rot on banana fruits. It could be developed into a biopesticide for the control of postharvest banana fruit rot pathogens.

PL

Banany łatwo psują się i są wrażliwe na porażenie mikroorganizmami wywołującymi istotne szkody. Pestycydy używane do zwalczania infekcji mogą być toksyczne dla człowieka i zwierząt. Jest więc zapotrzebowanie na metody zwalczania patogenów przyjazne środowisku. Jednoczesna inokulacja bananów gatunkiem Trichoderma i patogenami wywołującymi zgniliznę owoców powodowała ich gnicie, ale gnicie wywołane tylko przez T. asperellum NG-T161 lub w połączeniu z patogenem było ograniczone. Traktowanie owoców konidiami lub filtratami kultur T. asperellum NG-T161 w ciągu 30 minut przed inokulacją patogenami dawało lepsze wyniki w porównaniu do łącznego zastosowania patogena i antagonisty. Ze zgniłych skrawków tak potraktowanej tkanki owoców wyłożonych na płytki izolowano tylko gatunek Trichoderma. Filtraty kultur T. asperellum w stężeniu 50% inhibowały wzrost grzybni F. oxysporum i Colletotrichum musae odpowiednio o 49,7 i 60,3%, ale grzyb Lasiodiplodia theobromae nie był inhibowany. Szczepy T. asperellum były pasożytnicze w stosunku do patogenów powodujących gnicie bananów. Konidia i filtraty kultur T. asperellum NG-T161 zwalczały zgniliznę bananów. Grzyb ten mógłby być wykorzystany do opracowania biofungicydu do zwalczania patogenów wywołujących gnicie bananów.

Słowa kluczowe

PL

banana; post-harvest rot; control; fruit; conidium; culture filtrate; Trichoderma asperellum; rot pathogen; fruit pathogen

• Wydawca: -
• Czasopismo: Journal of Plant Protection Research
• Rocznik: 2009
• Tom: 49
• Numer: 3
• Opis fizyczny: p.302-308,ref.

Twórcy

autor

Adebesin A A

• Federal Polytechnic, P.M.B. 231 Ede. Osun State, Nigeria

autor

Odebode C.A.

autor

Ayodele A.M.

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