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Cereal Research Communications

, Volume 46, Issue 2, pp 253–262 | Cite as

Influence of salinity and osmotic stress on germination process in an old sicilian landrace and a modern cultivar of Triticum Durum Desf.

  • C. Maucieri
  • C. Caruso
  • S. Bona
  • M. Borin
  • A. C. BarberaEmail author
  • V. Cavallaro
Open Access
Article

Abstract

In many world regions, osmotic and salt stresses are becoming the primary environmental conditions limiting successful establishment of crops. The old durum wheat landraces may provide a source of genes useful to enhance crop resilience to the abiotic stresses of dryland areas or foreseen as a result of climate change. With this in mind, in order to determine the effects of salt and osmotic stresses on durum wheat germination, an old Sicilian durum wheat landrace “Timilia” and a relatively recent cultivar “Mongibello” were investigated at various iso-osmotic solutions of NaCl and mannitol at osmotic potentials of: 0 − control, −0.125, −0.250, −0.500 and −0.750 MPa.

Under stress conditions, different germination and early growth behavior was observed in the two durum wheat genotypes. Timilia presented almost stable germination even at the highest osmotic stresses (96.7% and 88.3% seed germination at 0 and −0.750 MPa, respectively) showing a higher capacity of seed imbibition than Mongibello. The latter thus showed a higher sensitivity than the old landrace to the studied stresses. The variability ascertained in the response to salinity stress indicate that Timilia could be a source of interesting genes for breeding programs.

Keywords

durum wheat seed germination salinity stress osmotic stress old and modern durum wheat genotypes 

Supplementary material

42976_2018_4602253_MOESM1_ESM.pdf (1.2 mb)
Supplementary material, approximately 1233 KB.

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© Akadémiai Kiadó, Budapest 2018

This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Authors and Affiliations

  • C. Maucieri
    • 1
  • C. Caruso
    • 1
    • 2
  • S. Bona
    • 1
  • M. Borin
    • 1
  • A. C. Barbera
    • 2
    • 3
    Email author
  • V. Cavallaro
    • 3
  1. 1.Department of Agronomy, Food, Natural Resources, Animals and Environment - DAFNAEUniversity of Padua, Agripolis CampusLegnaro (PD)Italy
  2. 2.Department of Agriculture, Food and Environment (Di3A)University of CataniaCatania (CT)Italy
  3. 3.Trees and Timber Institute (IVALSA)National Research Council (CNR)Catania (CT)Italy

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