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

Abstract

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.

Downloads

Download data is not yet available.

References

Adeyeye, S.A.O. Fungal mycotoxins in foods: a review. Cogent Food & Agriculture, v.2, n.1, 2016.

Aguiar, R.W.S.; Brito, D.R.; Lopes, M.M.; Santos, G.R.; Sousa, C.M.; Silva, E.M.M.; Didonet, J. Physiological and enzymatic changes in rice seeds stored at low temperatures. African Journal of Biotechnology, v.14, n.31., p.2434-2441. 2015.

Brasil. Regras para análise de sementes. Ministério da Agricultura, Pecuária e Abastecimento. Secretaria de Defesa Agropecuária. – Brasília: Mapa/ACS, 2009. 399 p.

Cardoso, P.C.; Baudet, L.; Peske, S.T.; Lucca Fillho, O.A. Armazenamento em sistema a frio de sementes de soja tratadas com fungicida. Revista Brasileira de Sementes, v.26, n.1, p.15-23, 2004.

FAOSTAT. 2019. Food and Agriculture Organization of the United Nations Statistical Databases, Rome, Italy.

Godfray, H.C.J.; Beddington, J.R.; Crute, I.R.; Haddad, L.; Lawrence, D.; Muir J.F.; Pretty, J.; Robinson, S.; Thomas, S.M.; Toulmin C. Food security: the challenge of feeding 9 billion people. Science, v.327, p.812–818. 2010.

Khamsen, N.; Onwimol, D.; Teerakawanich, N.; Dechanupaprittha, S., Kanokbannakorn, W.; Hongesombut, K.; Srisonphan, S. Rice (Oryza sativa L.) seed sterilization and germination enhancement via atmospheric hybrid nonthermal discharge plasma. ACS Appl Mater Interfaces, v.8, p.19268–19275. 2016.

Marini, P.; Moraes, C.L.; Marini, N.; Moraes, D.M.; Amarante, L. Alterações fisiológicas e bioquímicas em sementes de arroz submetidas ao estresse térmico. Revista Ciência Agronômica, v.43, n.4, p.722-730, 2012.

R Core Team. 2019. R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria. 2019. https://www.R-project.org/

Tanaka, M.A.S.; Maeda, J.A.; Plazas, I.H.A.Z. Microflora fúngica de sementes de milho em ambientes de armazenamento. Scientia Agricola, v.58, n.3, p.501-508, 2001.

Zuchi, J.; Bevilaqua, G.A.P. Qualidade fisiológica de sementes de arroz armazenadas em diferentes embalagens e temperaturas. Embrapa Clima Temperado MAPA, Boletim de Pesquisa e Desenvolvimento 163, 2012, 20p.

Published
2020-12-04
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

Most read articles by the same author(s)