Low-temperature applied to rice seed storage: an efficient protection method against fungal contamination

  • Raimundo Wagner Souza Aguiar Universidade Federal do Tocantins
  • Deyvid Rocha Brito Universidade Federal do Tocantins
  • Vitor L Nascimento Universidade Federal do Tocantins
  • Rodrigo Ribeiro Fidelis Universidade Federal do Tocantins
  • Talita Pereira de Souza Ferreira Universidade Federal do Tocantins
  • Gil Rodrigues Santos Universidade Federal do Tocantins
Keywords: mycoflora, Oriza sativa L., seed protection


Low-temperatures have long been thought to enhance seed health during storage. Here we tested the effect of low-temperature on the mycoflora associated with rice seeds. Seeds of the IRGA 423 and 424 cultivars were stored in refrigeration (8 and -50 °C) or at room temperature (25 ± 10 °C). Following storage (1, 45, and 90 days) was investigated the fungi associated with the seeds. We found that, for both cultivars, low-temperature stored seeds had a lower fungal load than the seeds at room temperature. Besides that, after 90 days of storage occurs a decrease in its incidence rate average of more than 85% in lower temperature. All mycroflora was eliminated at 90 days except for Fusarium sp. The Trichoderma sp. was detected only in IRGA 423 seeds, whereas all other fungi detected were found in both cultivars. In our seed-to-seedlings transmission analyses only Bipolaris sp. was observed in both cultivars at 8°C, when -50°C was not detected. Based on our results, we recommend low-temperature storage of rice seeds.


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How to Cite
Aguiar, R. W., Brito, D., Nascimento, V., Fidelis, R., Ferreira, T., & Santos, G. (2020). Low-temperature applied to rice seed storage: an efficient protection method against fungal contamination. Revista De Ciencias Agrícolas, 37(2). Retrieved from https://revistas.udenar.edu.co/index.php/rfacia/article/view/4991

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