Physiological and biochemical parameters of Triticum aestivum L. and Triticum spelta L. wheats under water deficit modeling

  • О. В. Борисова
  • О. М. Ружицька
Keywords: Triticum spelta L.; Triticum aestivum L.; water stress; osmotically active compounds; drought tolerance; free proline

Abstract

Comparative description of the seedlings growth response of Triticum spelta L. (var. duhamelianum) seeds and Triticum aestivum L. (Selyanka cultivar, Kuyalnyk cultivar) under water stress modeling was performed. Water stress was modeled by germinating seeds in solutions of nonionic polymer polyethylene glycol 6000 (PEG 6000) with osmotic potential from -0.25 MPa to -1.25 MPa. Seedlings formed under conditions of water stress were evaluated for their morphometric parameters and content of free proline as a marker of stress response. It was established that the germination of seeds from both species under conditions of slow water supply didn’t lead to statistically significant decreasing of germination potential parameters, but led to a significant decline in the growth of seedlings and to increasing of free proline concentration in seedlings. Spelt seedlings under conditions of water stress were characterized by less significantly reducing of length and wet weight of roots (compared to the control), and higher free proline content compared to winter wheat seedlings from tested cultivars. It was shown that seed germinability, mrphometrical parameters of roots and seedlings for tested spelt landraces wasn’t lower compared to same parameters obtained for winter wheat seedlings.

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References

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Published
2014-12-22
Cited
How to Cite
Борисова, О. В., & Ружицька, О. М. (2014). Physiological and biochemical parameters of Triticum aestivum L. and Triticum spelta L. wheats under water deficit modeling. The Journal of V.N.Karazin Kharkiv National University. Series «Biology», 23(1129), 81-88. Retrieved from https://periodicals.karazin.ua/biology/article/view/3955
Section
PLANTS GROWTH AND DEVELOPMENT AT STRESS