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Shahrekord Branch, Islamic Azad University , kazemkazem1357@iau.ac.ir
Abstract: (480 Views)
Extended abstract
Introduction: Salvia sp. from Lamiaceae family is one of the important medicinal and pasture plants that have many uses in various medicinal and food industries. This study was performed to evaluate the effects of different hormonal treatments on germination in three species of Salvia including S. officinalis, S. leriifolia, and S. syriaca under different wet stratification periods.
Materials and Methods: This research was conducted in factorial layout experiment in a completely randomized design (CRD) with 3 replications and 2 separate repetitions in Herbal Research Institute, Shahrekord Branch, Islamic Azad University in 2024. Experimental treatments included wet chilling (0, 10, 20, 30 day in 4°C and RH=45%) as first factor (A1-A4) and hormones inclusive (gibberellic acid (120ppm), benzyl adenine (10-4 M), kinetin (10-4 M), gibberellic acid (120 ppm) + benzyl adenine (10-4 M), gibberellic acid (120 ppm) + kinetin (10-4 M), benzyl adenine (10-4 M) + kinetin (10-4 M), gibberellic acid (120 ppm) + benzyl adenine (10-4 M)+ kinetin (10-4 M) and control) as second factor (B1-B8). Biochemical indices such as hydrogen peroxide, α-amylase and beta-1,3glucanase and germination indices such as dry weight of seedlings, length of seedlings, germination percentage, mean of germination time, seed vigour, and germination uniformity were measured.
Results: The use of wet chilling and hormonal treatments had significant effectiveness on germination characters. Gibberellic acid in the most of measured characters had beneficial and increasing effects. The most and lowest important measured germination characteristics and decreased time needed for germination. The highest and lowest amounts for germination characteristics such as seedling length (5.56-2.1 cm), seed vigor (5.1-0.94), seedling dry weight (45.35-19.84 mg), germination percentage (91.74-38.22), germination uniformity (21.03-3.57 day) and biochemical characters such as content of α-amylase (12.94-2.6 mM/g FW of seed), beta-1, 3 glucanase (10.79-2.83 mM/g FW of seed) and hydrogen peroxide (0.69-0.21 mM/g FW of seed) were recorded under wet chilling treatment for 20 day + gibberellic acid (120 ppm) + benzyl adenine (10-4 M) + kinetin (10-4 M) and treatment of without wet chilling + without hormonal treatment, respectively. Also, increasing wet chilling treatment duration, increased some evaluated characteristics, but most of them reached the highest values after 20 days wet chilling treatment. The amounts of evaluated characters in this treatment improved more than 100% in comparison to control seeds. It can be concluded that wet chilling (20 day) along with the use of gibberellic acid, benzyl adenine, and kinetin resulted in improved seed germination indices of Salvia spp. Results showed that in most of measured characteristics, the Salvia species have various amounts of biochemical and germination indices. Finally, the treatment of wet chilling (20 day) and use of gibberellic acid, benzyl adenine, and kinetin hormones, suggest to obtain of the best germination indices in seeds of Salvia spp. Germination percentage and most of the other measured characters in this research in S. officinalis were more than S. syriaca, and S. leriifolia, respectively.
Conclusion: Results showed that the most of measured characteristics of Salvia species have various amounts of biochemical and germination indices. Generally, wet chilling (20 day) with the use of gibberellic acid, benzyl adenine, and kinetin suggest to best seed germination of Salvia spp.
Highlights:
Introduction: Salvia sp. from Lamiaceae family is one of the important medicinal and pasture plants that have many uses in various medicinal and food industries. This study was performed to evaluate the effects of different hormonal treatments on germination in three species of Salvia including S. officinalis, S. leriifolia, and S. syriaca under different wet stratification periods.
Materials and Methods: This research was conducted in factorial layout experiment in a completely randomized design (CRD) with 3 replications and 2 separate repetitions in Herbal Research Institute, Shahrekord Branch, Islamic Azad University in 2024. Experimental treatments included wet chilling (0, 10, 20, 30 day in 4°C and RH=45%) as first factor (A1-A4) and hormones inclusive (gibberellic acid (120ppm), benzyl adenine (10-4 M), kinetin (10-4 M), gibberellic acid (120 ppm) + benzyl adenine (10-4 M), gibberellic acid (120 ppm) + kinetin (10-4 M), benzyl adenine (10-4 M) + kinetin (10-4 M), gibberellic acid (120 ppm) + benzyl adenine (10-4 M)+ kinetin (10-4 M) and control) as second factor (B1-B8). Biochemical indices such as hydrogen peroxide, α-amylase and beta-1,3glucanase and germination indices such as dry weight of seedlings, length of seedlings, germination percentage, mean of germination time, seed vigour, and germination uniformity were measured.
Results: The use of wet chilling and hormonal treatments had significant effectiveness on germination characters. Gibberellic acid in the most of measured characters had beneficial and increasing effects. The most and lowest important measured germination characteristics and decreased time needed for germination. The highest and lowest amounts for germination characteristics such as seedling length (5.56-2.1 cm), seed vigor (5.1-0.94), seedling dry weight (45.35-19.84 mg), germination percentage (91.74-38.22), germination uniformity (21.03-3.57 day) and biochemical characters such as content of α-amylase (12.94-2.6 mM/g FW of seed), beta-1, 3 glucanase (10.79-2.83 mM/g FW of seed) and hydrogen peroxide (0.69-0.21 mM/g FW of seed) were recorded under wet chilling treatment for 20 day + gibberellic acid (120 ppm) + benzyl adenine (10-4 M) + kinetin (10-4 M) and treatment of without wet chilling + without hormonal treatment, respectively. Also, increasing wet chilling treatment duration, increased some evaluated characteristics, but most of them reached the highest values after 20 days wet chilling treatment. The amounts of evaluated characters in this treatment improved more than 100% in comparison to control seeds. It can be concluded that wet chilling (20 day) along with the use of gibberellic acid, benzyl adenine, and kinetin resulted in improved seed germination indices of Salvia spp. Results showed that in most of measured characteristics, the Salvia species have various amounts of biochemical and germination indices. Finally, the treatment of wet chilling (20 day) and use of gibberellic acid, benzyl adenine, and kinetin hormones, suggest to obtain of the best germination indices in seeds of Salvia spp. Germination percentage and most of the other measured characters in this research in S. officinalis were more than S. syriaca, and S. leriifolia, respectively.
Conclusion: Results showed that the most of measured characteristics of Salvia species have various amounts of biochemical and germination indices. Generally, wet chilling (20 day) with the use of gibberellic acid, benzyl adenine, and kinetin suggest to best seed germination of Salvia spp.
Highlights:
- Study the various periods of wet chilling and hormonal treatments on biochemical and germination indices of Salvia officinalis, S. leriifolia, S. syriaca.
Type of Study: Research |
Subject:
Seed Physiology
Received: 2025/01/5 | Revised: 2025/06/9 | Accepted: 2025/03/18
Received: 2025/01/5 | Revised: 2025/06/9 | Accepted: 2025/03/18
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