Browsing by Author "Akdag, Seref"

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Effects of Combined Pretreatments on Germination and Emergence of Wild Eremurus Spectabilis M. Bieb. Seeds
(Univ Agr Sci & veterinary Med Cluj-napoca, 2020) Akdag, Seref; Tuncer, Burcu
Eremurus spectabilis is a perennial herbaceous species that grows in the wild. Commonly consumed as a vegetable, it is also classified among medicinal plants and popular ornamental geophytes. Germination is not achieved under normal conditions because of seed dormancy. In this study, various combined treatments were experimented with to improve the germination and emergence performance of E. spectabilis seeds. The seeds were immersed in solutions of potassium nitrate (KNO3: 5 mM for 24 and 48 hours), calcium chloride (CaCl2: 5 mM for 24 and 48 hours) and subjected to tip cutting. Pre-treated seeds were then subjected to moist-cold stratification periods treatments for different durations (30, 50, 80 and 100 days). In the 5 mM KNO3 treatments, 48-hour KNO3 and 100 days of stratification treatments had better germination (11.1%) and emergence values (9.7%). In the 5 mM CaCl2 treatments, 24-hour CaCl2 yielded better germination (10.2%) and emergence (8.4%) values. Seed tip-cutting treatments were the most successful among all the treatments for the germination and emergence parameters.
Effects of Moist-Cold Stratification and Gibberellic Acid Applications on Breaking Seed Dormancy in Foxtail Lily (Eremurus Spectabilis M.bieb.)
(2020) Akdag, Seref; Tuncer, Burcu
Eremurus spectabilis is a wild edible perennial herbaceous geophyte species with medicinal and popularornamental uses. In this study, gibberellic acid (GA3) with moist-cold stratification treatments were applied to break thedormancy of E. spectabilis seeds. For this purpose, seeds were soaked in gibberellic acid solutions (GA3: 500 and 750 ppmfor 24 and 48 hours). Pretreated seeds were then subjected to moist-cold stratification treatments for different durations (30,50, 80 and 100 days) at 4 ºC. In 24-hour GA3 treatments, the germination and emergence ratios (21.04%) were obtainedfrom the 500 ppm GA3 dose and 100 days of stratification treatments. In 48-hour GA3 treatments, the GA3 doses did nothave any significant effect on germination and emergence ratios; the greatest germination ratios were obtained from the 500ppm (20.36%) and 750 ppm (20.00%) doses and 100 days of stratification treatments, and the best emergence ratios wereobtained from the 500 ppm GA3 dose and 100 days of stratification treatments (18.51%). It is considered that it is beneficialto try the combinations of moist-cold applications with different treatments in future studies.