Fusarium verticillioides inoculum potential and its relation with the physiological stored corn seeds quality
Keywords:Zea mays L., Germination, Ear rot, Fluid restriction.
The pathogenic fungi may be associated with the seeds during development, harvest and storage, and it can be disseminated through them. This work evaluated the seeds performance of three hybrid corn cultivars, BM 840 PRO, BM 810 and BM 207, submitted to different inoculum potentials of Fusarium verticillioides. Seeds were uniformly distributed over the medium fungal colony developed on PDA (potato dextrose agar) containing mannitol in water potential -2.0 MPa. Seeds remained in this way for different periods of contamination (0, 24, 48, 72 and 96 hours). Before and after seven months of seed storage the evaluations were performed. Seeds treated with fungicide Derosal Plus® (carbendazim + thiram, 250 mL p.c. 100 kg-1 ofseeds) were used as control. The increased of inoculum potential of F. verticillioides fungus on corn seeds caused reduction in physiological quality in the potentials 72 and 96 hours of exposure before and after storage. The highest Fusarium verticillioides incidence is observed in non-stored seeds. Fusarium verticillioides incidence on corn seeds accentuates the deterioration in storage.Â
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Copyright (c) 2016 Tatiana Botelho Fantazzini, Renato Mendes Guimarães, Aline da Consolação Sampaio Clemente, Everson Reis Carvalho, José da Cruz Machado
This work is licensed under a Creative Commons Attribution 4.0 International License.