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. Barbera; V. Cavallaro

doi:10.1556/0806.46.2018.07

Cereal Research Communications

Volume/Issue:: Volume 46: Issue 2

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

Authors:

C. Maucieri

C. Maucieri University of Padua, Agripolis Campus, Viale dell’Università 16–35020 Legnaro (PD), Italy

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C. Caruso

C. Caruso University of Padua, Agripolis Campus, Viale dell’Università 16–35020 Legnaro (PD), Italy
University of Catania, Via Valdisavoia 5, 95123 Catania (CT), Italy

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S. Bona

S. Bona University of Padua, Agripolis Campus, Viale dell’Università 16–35020 Legnaro (PD), Italy

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M. Borin

M. Borin University of Padua, Agripolis Campus, Viale dell’Università 16–35020 Legnaro (PD), Italy

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A. C. Barbera

A. C. Barbera University of Catania, Via Valdisavoia 5, 95123 Catania (CT), Italy
National Research Council (CNR), Via Paolo Gaifami 18, 95121 Catania (CT), Italy

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V. Cavallaro

V. Cavallaro National Research Council (CNR), Via Paolo Gaifami 18, 95121 Catania (CT), Italy

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Pages:: 253–262

Online Publication Date:: Jun 2018

Publication Date:: 01 Jun 2018

Article Category:: Research Article

DOI:: https://doi.org/10.1556/0806.46.2018.07

Keywords:: durum wheat; seed germination; salinity stress; osmotic stress; old and modern durum wheat genotypes

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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.

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Cereal Research Communications A Quarterly of the Cereal Research Non-Profit Ltd. Company

Print ISSN:: 0133-3720

Online ISSN:: 1788-9170

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Cereal Research Communications
Language	English
Size	A4
Year of Foundation	1973
Volumes per Year	1
Issues per Year	4
Founder	Akadémiai Kiadó
Founder's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245
Publisher	Akadémiai Kiadó Springer Nature Switzerland AG
Publisher's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245. CH-6330 Cham, Switzerland Gewerbestrasse 11.
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ISSN	0133-3720 (Print)
ISSN	1788-9170 (Online)