Document Type : Research paper
Authors
- Mehdi Hosseinifarahi 1
- Habib Alah Moazen 2
- Azam Amiri 3
- Mohammad Mahdi Jowkar 4
- Javad Mottaghipisheh 5
1 Department of Horticultural Science, Yasuj Branch, Islamic Azad University, Yasuj, Iran Sustainable Agriculture and Food Security Research Group, Yasuj Branch, Islamic Azad University, Yasuj, Iran
2 Department of Agronomy, Yasuj Branch, Islamic Azad University, Yasuj, Iran
3 Department of Horticultural Science, Faculty of Agriculture, Shahid Chamran University of Ahvaz, Ahvaz, Iran
4 Department of Horticultural Science, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran.
5 Institute of Pharmacy/Pharmacognosy, Center for Molecular Biosciences (CMBI), University of Innsbruck, Innrain 80–82, 6020 Innsbruck, Austria
Abstract
Seed priming is an established approach to the aim of accelerating germination and increasing germination percentage, which can be followed by high-quality seedlings and optimal plant growth. Culture media can influence the growth and nutritional status of seedlings at the nursery stage. In order to study the impact of seed priming and culture medium on germination performance and seedling growth, two separate laboratory and greenhouse experiments were planned in which the seeds and seedlings of sweet pepper and eggplant were subjected to various chemicals (i.e. growth regulators and nutrients) in the culture media. The results showed that the chemicals had a significant effect on seed priming by improving seed germination and root length in both plants. While putrescine improved seed germination, the highest germination percentage and root growth of both plants were observed in the salicylic acid treatment. Seed priming by humic acid was more effective than ZnSO4 and KNO3 in encouraging seed germination. The application of peat moss (solely or in combination with other culture media such as cocopeat and perlite) improved the growth parameters and nutritional status of commercially ready seedlings. The highest shoot weight (fresh and dry) in both plants were observed in seedlings grown on peat moss. Apart from improvements in vegetative features, peat moss enhanced the uptake and accumulation of nutrients such as N, P, K, Ca, and Mg, compared to cocopeat and perlite. In general, the results indicated that salicylic acid was the best priming treatment and peat moss was the best culture medium for the commercial production of eggplant and sweet pepper seedlings.
Abbreviations
C: Cocopeat, Pe: Perlite, PM: Peat moss, P: Phosphorus, N: Nitrogen, Mg: Magnesium, K: Potassium, Ca: Calcium, SA: Salicylic acid, HA: Humic acid, GP: Germination percentage, Put: Putrescine, KNO3: Potassium nitrate, ZnSO₄: Zinc sulfate, DW: Distilled water, PAs:
Keywords
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