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Seed Fatty Acid Changes Germination Response to Temperature and Water Potentials in Six Sesame ( Sesamum indicum L.) Cultivars: Estimating the Cardinal Temperatures

Author

Listed:
  • Hamidreza Balouchi

    (Department of Agronomy and Plant Breeding, Yasouj University, Yasouj 7591874831, Iran)

  • Vida Soltani Khankahdani

    (Department of Agronomy and Plant Breeding, Yasouj University, Yasouj 7591874831, Iran)

  • Ali Moradi

    (Department of Agronomy and Plant Breeding, Yasouj University, Yasouj 7591874831, Iran)

  • Majid Gholamhoseini

    (Department of Oilseed Research, Seed and Plant Improvement Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj 3135933151, Iran)

  • Ramin Piri

    (Department of Agronomy and Plant Breeding, University of Tehran, Tehran 3158777871, Iran)

  • Seyedeh Zahra Heydari

    (Department of Agronomy and Plant Breeding, Yasouj University, Yasouj 7591874831, Iran)

  • Beata Dedicova

    (Department of Plant Breeding, Swedish University of Agricultural Sciences (SLU), P.O. Box 190, 234 22 Lomma, Sweden)

Abstract

Seed fatty acid composition can influence seed quality, followed by seed germination and optimal seedling establishment. Therefore, to find out the role of seed fatty acids in changing the cardinal temperatures of six sesame cultivars germinated at different temperatures (10, 15, 20, 25, 30, 35, 40, and 45 °C) and water potentials (0, −0.2, −0.4, −0.6, −0.8, −1, and −1.2 MPa), an experiment was conducted. The dent-like, beta, and segmented models were used to analyze the data. The results showed that different cultivars at optimal temperatures show different reactions to environmental conditions; for example, the germination rate in Halil and Dashtestan2 cultivars followed the dent-like model, Darab1, Oltan, and Yellow-White followed the beta model, and Naz followed the segmented model. Based on the results, the average temperature in all water potentials of the base, sub-optimal, supra-optimum, and ceiling was determined as 12.6, 33.3, 38, and 43.9 °C, respectively, once the superior dent-like model was used. Using the superior beta model, the average temperatures in the base, optimum, and ceiling were 8.5, 31.2, and 50.5 °C. In contrast, when the segmented superior model was used, they were determined to be 7.6, 34, and 44.1 °C, respectively. According to the results, it can be stated that the Halil cultivar with more oleic acid and less linoleic acid has a higher base temperature and is more adapted to high temperatures for later cultivations. The Naz cultivar with a long biological clock is suitable for earlier cultivations. The ceiling temperature of these cultivars was also affected by the osmotic potential and decreased significantly with the increase in osmotic levels. Dashtestan2 cultivar with a high germination rate could be chosen for cultivation in water and high-temperature stress areas.

Suggested Citation

  • Hamidreza Balouchi & Vida Soltani Khankahdani & Ali Moradi & Majid Gholamhoseini & Ramin Piri & Seyedeh Zahra Heydari & Beata Dedicova, 2023. "Seed Fatty Acid Changes Germination Response to Temperature and Water Potentials in Six Sesame ( Sesamum indicum L.) Cultivars: Estimating the Cardinal Temperatures," Agriculture, MDPI, vol. 13(10), pages 1-17, October.
  • Handle: RePEc:gam:jagris:v:13:y:2023:i:10:p:1936-:d:1253226
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    References listed on IDEAS

    as
    1. Pedro Bello & Kent J. Bradford, 2021. "Relationships of Brassica Seed Physical Characteristics with Germination Performance and Plant Blindness," Agriculture, MDPI, vol. 11(3), pages 1-21, March.
    2. Uçan, Kenan & killi, Fatih, 2010. "Effects of different irrigation programs on flower and capsule numbers and shedding percentage of sesame," Agricultural Water Management, Elsevier, vol. 98(2), pages 227-233, December.
    3. Masoumeh Asadi Aghbolaghi & Mohammad Sedghi & Raouf Seyed Sharifi & Beata Dedicova, 2022. "Germination and the Biochemical Response of Pumpkin Seeds to Different Concentrations of Humic Acid under Cadmium Stress," Agriculture, MDPI, vol. 12(3), pages 1-15, March.
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