Effect of Osmotic Priming Treatment on Seed Viability and Seedling Growth in Watermelon

수박종자의 Osmotic Priming 처리가 종자활력 및 유묘생장에 미치는 영향

  • Received : 2016.02.17
  • Accepted : 2016.03.31
  • Published : 2016.04.30


In nine commercial watermelon cultivars, the effects of osmotic seed priming were evaluated for seed viability and seedling growth at different germination temperatures and field conditions. Generally, primed seeds showed improved germination rate and reduced time for emergence at different germination temperatures, as compared to untreated seeds. In particular, priming effect on seed germination was significantly high at $15^{\circ}C$, which is an environment normally resulting in poor germination. Depending on the watermelon cultivar, germination rate under low temperature ($15^{\circ}C$) was improved by up to 15~66% in primed seeds, as compared to untreated seeds. However, priming effect on germination was gradually reduced as the temperature reached to its optimum level for seed germination. Seed priming tended to improve the viability, fresh weight, and dry weight of watermelon seedlings, but its effect on seedling stage was not large, as compared to untreated seeds. Primed watermelon seeds showed improved emergence rate and facilitated germination in the field, but their seedling growth after 30 days from germination was not significantly affected. Our results indicated that seed priming can greatly improve the seed germination at poor temperature conditions in the watermelon.


Germination temperature;Seed viability;Priming;Seedling growth


  1. Bennett, M. A., Waters, L. J., 1987, Seed hydration treatments for improved sweet corn germination and stand establishment, J. Amer. Soc. Hort. Sci., 112(1), 45-49.
  2. Bradford, K. J., 1986, Manipulation of seed water relations via osmotic priming to improve germination under stress conditions, Hort. Sci., 21(5), 1105-1112.
  3. Choi, Y. M., Hwang, J. H., Kim, K. H., Lee, Y. J., Kang, J. S., Choi, Y. H., Son, B. G., Park, Y. H., 2012, Application of EST-SSR marker for purity test of watermelon F1 cultivars, J. of Agri. Life Sci., 46(4), 85-92.
  4. Coolbear, P., Francis, A., Grierson, D., 1984, The effect of low temperature pre-sowing treatment on the germination performance and membrane integrity of artificially aged tomato seeds, J. Exp. Bot., 35(11), 1609-1617.
  5. Demir, I., Mavi, K., 2004, The effect of priming on seedling emergence of differentially matured water-melon (Citrullus lanatus (Thunb.) Matsum and Nakai) seeds, Scientia Horticulturae., 102(4), 467-473.
  6. Food and Agriculture Organozation of united nations (FAO), 2008, Statisticla capacity development, Rome.
  7. Hardegree, S. P., Emmerich, W. E., 1992, Effect of matric priming duration and priming water potential on germination of four grasses., J. of Exp. botany., 43(247), 233-238.
  8. Helsel, D. G., Helsel, D. R., Minor, H. C., 1986, Field studies on osmoconditioning soybean, Field Crops Res., 14, 291-298.
  9. International rules for Seed Testing Association (ISTA)., 1985, Seed Sci. Tech., 13, 299-355.
  10. Kang, J. S., Cho, J. L., 1996, Effect of priming on the germinability of watermelon (Citrullus vulgaris schrad) seeds and seedling growth., J. Kor. Soc. Hort. Sci., 37(1), 12-18.
  11. Khan, A. A., 1992, Preplant physiological seed conditioning, Horticultural reviews, 13(13), 131-181.
  12. Korkmaz, A., Tiryaki, I., Nas, M. N., Ozbay, N., 2004, Inclusion of plant growth regulators into priming solution improves low-temperature germination and emergence of watermelon seeds, Canadian J. Plant science., 84(4), 1161-1165.
  13. Nelson, J. M., Sharples, G. C., 1980, Effect of growth regulators on germination of cucumber and other cucurbit seeds at suboptimal temperatures, Hort. Sci., 15(3), 253-254.
  14. Parera, C. A., Cantliffe, D. J., 1994a, Presowing seed treatments to enhance supersweet sweet corn seed and seedling quality, Hort. Sci., 29(4), 277-278.
  15. Parera, C. A., Cantliffe, D. J., 1994b, Presowing seed priming, Horticultural reviews, 16(16), 109-141.
  16. Rural Development Administration (RDA), 2012, Information of agricultural statistics, Korea.
  17. Sachs, M., 1977, Priming watermelon seeds for low temperature germination, J. Amer. Soc. Hort. Sci., 102(2), 175-178.


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