Evaluation of Thyme (Thymus vulgaris L.) seed germination responses under different priming treatments

Document Type : Original Article

Authors

1 Research Expert /Acecr/Saveh/Iran

2 Assistant Professor /Seed and Plant Certification and Registration Institute/

3 Faculty of Agriculture, Ferdowsi University of Mashhad

4 Research Associate Prof. SPCRI, Karaj, Iran.

Abstract

Abstract
Objective of this research was identification and determination of the most suitable treatments to improve seed germination characteristics of Thyme medicinal plant. In order to evaluate different priming treatments on seed germination characteristics of Thyme, an experiment was conducted in a completely randomized design with four replications which treatments were: without priming (control), Gibberellic acid (100, 200 and 300 ppm), Cytokinin (200 and 400 ppm), thiourea (1000, 2000 and 3000 ppm), potassium nitrate (10, 20, 100, 200, 300 and 400 ppm), phosphorus (10, 20, 30 ppm), manganese sulfate (2, 4 and 6 ppm). Germination characteristics such as shoot and radicle length, germination percentage, seed vigor, mean germination time and germination rate were evaluated. The results showed significant effects of seed priming treatments on shoot and radicle length, germination percentage, seed vigor and mean germination time at 1% probability level and germination rate at 5% probability level. Among the treatments, gibberellic acid treatments (100 ppm) and potassium nitrate (200 ppm), thiourea (2000 ppm) and manganese sulfate (4 ppm) presented high positive impacts on germination. Cytokinin treatments also significantly decreased many germination characteristics. It seems that potassium nitrate and gibberellic acid treatments compared with other treatments are more effective to improve all thyme germination characteristics.
Keywords: Germination, Growth Stimulator, Seed Priming, Thymus.

Keywords

References

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Iranian Journal of Seed Science and Technology
Volume 10, Issue 2 - Serial Number 22
Summer of 2021
July 2021
Pages 53-62

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