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Effect of different priming treatments and priming durations on melon germination behavior under suboptimal conditions

J. L. Castañares
  • Corresponding author
  • Plant Physiology Laboratory, Department of Basic Sciences, Universidad Nacional de Luján, Luján, Argentina
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  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ C. A. Bouzo
  • Laboratory of Research in Physiology and Plant Molecular Biology, Facultad de Ciencias Agrarias, Universidad Nacional del Litoral, Santa Fe, Argentina
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
Published Online: 2018-11-10 | DOI: https://doi.org/10.1515/opag-2018-0043


The objective of this work was to compare the effect of different priming osmotic agents and durations on melon germination in: 1) low temperature stress; 2) saline stress; and 3) low temperature and saline stress. The osmotic agents were polyethylene glycol 6000, KNO3+K3PO4, CaCl2 and NaCl, with -1.5 MPa osmotic potential. Priming durations were 3 and 6 days (d). Germination percentage (GP) and mean germination time (MGT) were measured. At 12°C the best GP was 14% with CaCl2/3-d, without germination in control. At 25°C the best GP was 100% with CaCl2/3-d. MGT was reduced one day. At -0.7 MPa GP was 100% with CaCl2/3-d and NaCl 3d. At -1.0 MPa the best GP were 46 and 50% for 3d with NaCl and CaCl2respectively without germination in control treatment. At 12°C and -1.0 MPa the best GP were CaCl2/3-d and CaCl2/3-d (14 and 10% respectively). It is concluded that at 12°C, the increase in GP would not justify the use of priming. At 25°C priming increased GP and reduced MGT. At -0.7 MPa priming increased germination, while at -1.0 MPa the increase is not agronomical considerable. At 12°C and -1.0 MPa the increase of germination is not agronomical important.

Keywords: priming; germination; vigor; salt stress; cold stress


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About the article

Received: 2018-02-06

Accepted: 2018-08-23

Published Online: 2018-11-10

Published in Print: 2018-11-01

Citation Information: Open Agriculture, Volume 3, Issue 1, Pages 386–392, ISSN (Online) 2391-9531, DOI: https://doi.org/10.1515/opag-2018-0043.

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© by J. L. Castañares, C. A. Bouzo, published by De Gruyter. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License. BY-NC-ND 4.0

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