Incubation methods for the detection of fungi associated with caraway (Carum carvi L.) seeds
, Paweł Serbiak
, and Dorota Szopińska
1 Department of Plant Pathology, Seed Science and Technology, Division of Seed Science and Technology, Faculty of Horticulture and Landscape Architecture, Poznań University of Life Sciences, Szamotulska 28, Baranowo, 62-081 Przeźmierowo, Poland
Introduction: Infestation with fungi may significantly affect the quality of seeds. However, there is no standard method for caraway (Carum carvi L.) seed health testing.
Objective: The aim of the present study was to determine the most efficient method of the detection of fungi associatyed with caraway seeds.
Methods: Seven incubation methods for evaluation of health of these seeds were compared: deep freeze blotter test, blotter test with mannitol, blotter test with polyethylene glycol, agar tests on potato-dextrose-agar (PDA) and on reduced PDA (RPDA) without seed disinfection, and agar tests on PDA and RPDA after seed disinfection. The evaluation was performed after 10 and 14 days of incubation.
Results: Thirty two fungal genera were associated with the seeds. Alternaria alternata, Cladosporium spp. and Rhizopus nigricans were identified most frequently. Prolongation of incubation time favoured growth of Fusarium spp. and R. nigricans to the highest extent.
Conclusions: The greatest seed infestation with fungi, especially Alternaria spp., was observed in the deep freeze blotter test followed by the blotter test with mannitol. Both of them could be recommended for further study on caraway seed health testing.
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