The Effect of Salt and Drought Stresses on Germination and Early Seedling Growth of Different Linseed (Linum usitatissimum L.) Varieties

Authors : Yasemin Erdoğdu, İlkay Orhan

Pages : 62-73

Doi:10.18615/anadolu.1600805

View : 57 | Download : 47

Publication Date : 2025-06-30

Article Type : Research Paper

Abstract :Salinity and drought are the primary stress factors that negatively impact crop production. This study evaluated the effects of sodium chloride (NaCl) and polyethylene glycol (PEG-6000)-induced osmotic stress on germination and early seedling growth in five linseed varieties (Kara Kız, Beyaz Gelin, Sarı Dane, Cemre, and Efe). The investigated parameters included germination rate (%), average germination time (days), root length (cm), fresh and dry root weight (mg), shoot length (cm), and fresh and dry shoot weight (mg). The results revealed that the differences among the tested linseed varieties were statistically significant for all examined characteristics. It was determined that the varieties exhibited considerable resistance to salt stress in terms of germination rates. Germination rates decreased by 2.3% at 12.0 dS m⁻¹ NaCl and by 10.6% at 0.50 MPa PEG. Additionally, the average germination time increased with rising salinity (1.6–4.5 days) and drought stress (1.1–2.7 days). With increasing salinity and drought stress, root length (NaCl: 1.40–6.40 cm, PEG: 5.46–12.60 cm), shoot length (NaCl: 2.30–10.43 cm, PEG: 2.40–10.06 cm), fresh root weight (NaCl: 3.86–13.90 mg, PEG: 1.43–6.00 mg), dry root weight (NaCl: 0.20–1.53 mg, PEG: 0.26–1.03 mg), fresh shoot weight (NaCl: 29.30–86.33 mg, PEG: 21.00–82.40 mg), and dry shoot weight (NaCl: 2.00–7.23 mg, PEG: 2.10–7.76 mg) decreased gradually and significantly. Among the tested varieties, Sarı Dane exhibited greater resistance to salt stress, while Beyaz Gelin was more resistant to drought stress.
Keywords : Çimlenme, Linum usitatissimum L., keten, kuraklık, NaCl, osmotik stres

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