Physiological quality of white oat seeds at different temperatures

Authors

DOI:

https://doi.org/10.5433/1679-0359.2021v42n3Supl1p1473

Keywords:

Avena sativa L., Physiological quality, Vigor.

Abstract

White oats are cereals that are grown in different regions of the globe because they have good adaptability and final destination. Thus, their cultivation has shown significant increases in order to meet demand, especially for forage production, grains, and animal and human consumption. High-quality seeds are necessary for crop cultivation and white oats are sown in winter when thermal fluctuations may occur. Therefore, the objective of this study was to evaluate the physiological changes in oat seeds exposed to different temperatures during the germination phase. The experiment was a completely randomized design with four replications in a 6 × 4 factorial design. Six cultivars were evaluated: Aphrodite, Altiva, Artemis, Brava, Corona, and Guará at temperatures of 15, 20, 25, and 30 °C, and the following measurements were taken: first germination count, germination, germination speed index (IVG), and seedling length and mass. The results were analyzed using analysis of variance (F test) and the means were compared using Tukey’s test. The cultivars were physiologically affected at the minimum and maximum temperatures. At 15 °C, normal seedlings did not form, whereas the highest germination values were recorded at 20 and 25 ºC, which showed that these temperatures were the most favorable temperatures for the germination process. Vigor declined at 30 °C and there was a greater number of abnormal seedlings and dead seeds.

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Author Biographies

Luana de Carvalho Catelan, State University of Londrina

Student of the Master’s Course of the Graduate Program in Agronomy, State University of Londrina, UEL, Londrina, PR, Brazil.

Luana de Souza Marinke, State University of Londrina

Student of the Master’s Course of the Graduate Program in Agronomy, State University of Londrina, UEL, Londrina, PR, Brazil.

Marinara Ferneda Ventorim, State University of Londrina

Student of the Doctoral Course of the Graduate Program in Agronomy, UEL, Londrina, PR, Brazil.

Lúcia Sadayo Assari Takahashi, State University of Londrina

Profa Dra Senior, Department of Agronomy, Graduate Program in Agronomy, UEL, Londrina, PR, Brazil, Productivity Scholarship from Fundação Araucária.

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Published

2021-04-22

How to Cite

Catelan, L. de C., Marinke, L. de S., Ventorim, M. F., & Takahashi, L. S. A. (2021). Physiological quality of white oat seeds at different temperatures. Semina: Ciências Agrárias, 42(3Supl1), 1473–1486. https://doi.org/10.5433/1679-0359.2021v42n3Supl1p1473

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