Effects of Peg-Induced Drought Stress on Germination and Seedling Performance of Bread Wheat Genotypes
Abstract
This study was conducted to determine the response of some bread wheat genotypes to drought stress during germination and seedling growth stages. Two bread wheat cultivars (Karatopak and Sagittoria) and three advanced breeding lines (SERI.1B*2/3KAUZ*2BOW//KAUZ, 89N2090/WERAVER// SW91.4903 and STAR’S’KAUZ’S’s) were used as the seed material. Three different doses of Polyethylene Glycol (Control, -0.6 MPa and -1.2 MPa of PEG-6000) were used to generate drought stress in germination and seedling growth stages of bread wheat. Germination experiments were carried out in petri dishes placed into an incubator with 4 replications in completely randomized factorial design. Seedling emergence experiments were carried out in plastic containers filled with a mixture of sand and peat placed into a growth cabinet with 3 replications in factorial arrangement of CRD. Germination experiments showed that genotype, PEG and genotype x PEG interactions were significant for examined traits except for germination rate. In the seedling experiments, genotype, PEG and genotype x PEG interaction were significant for all parameters, except for mean emergence time. Generally, increased doses of PEG caused remarkable decreases in all examined traits, but increase in mean germination time and mean emergence time. As the PEG doses increased, genotypes responded differently with regard to examined traits in germination and seedling emergence of bread wheat genotypes. It can be concluded that PEG-6000 was useful agent to create drought stress in germination and seedling growth of bread wheat, but greater doses and osmotic potentials lower than -1.2 MPa could be applied to better determine the drought stress tolerance of bread wheat genotypes.
Keywords
References
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Details
Primary Language
English
Subjects
Agronomy
Journal Section
Research Article
Authors
Didem Bilgili
This is me
0000-0002-7874-8233
Türkiye
Mehmet Atak
*
0000-0003-1196-0413
Türkiye
Kazım Mavi
0000-0003-0195-8539
Türkiye
Publication Date
December 31, 2019
Submission Date
July 23, 2019
Acceptance Date
December 2, 2019
Published in Issue
Year 2019 Volume: 29 Number: 4
Cited By
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Yüzüncü Yıl Üniversitesi Tarım Bilimleri Dergisi
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Mustafa Kemal Üniversitesi Tarım Bilimleri Dergisi
https://doi.org/10.37908/mkutbd.735925The impact of PEG-induced drought stress on seed germination and seedling growth of different bread wheat (Triticum aestivum L.) genotypes
PLOS ONE
https://doi.org/10.1371/journal.pone.0262937Arpa Çeşitlerinin Çimlenme Döneminde Ozmotik Stres Toleransının Belirlenmesi
Bursa Uludağ Üniversitesi Ziraat Fakültesi Dergisi
https://doi.org/10.20479/bursauludagziraat.1376698
