Efficacy of Priming Technique to Enhance Germination of Cumin (Cuminum cyminum) Seeds of Different Lifespans

Document Type : Original Article


1 Department of Agronomy and Plant Breeding, College of Agriculture, University of Yasouj, Yasouj, Iran

2 Department of Agronomy and Plant Breeding, Faculty of Agriculture, University of Tehran, Tehran, Iran,

3 Department of Biotechnology and Plant Breeding, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad 9177948978, Iran

4 Department of Agronomy and Plant Breeding, Agriculture Institute, Research Institute of Zabol, Zabol, Iran

5 Department of Plant Sciences, College of Agricultural and Marine Sciences, Sultan Qaboos University, Al-Khoudh, Muscat, Oman



Optimum germination and seedling establishment are important stages in the life cycle of plants with dormant seeds. This research was conducted to evaluate the impact of seed priming on the germination indices and seedling growth of cumin seeds with different lifetimes. Cumin seeds of different lifetimes (freshly harvested seeds, 12 and 24 months old) were soaked in distilled water (hydropriming), KH2PO4 (1 and 2%), NaH2PO4 (1 and 2%), ascorbic acid (AA; 100 and 200 mg L-1) and Gibberellic acid (GA; 100 and 200 mg.L-1) at 4 °C and 20 °C for 12 or 24 h. Seed priming treatments caused significant improvement in the germination of seeds with all three lifetimes. In 12 and 24 months old seeds, seed priming with NaH2PO4 and AA were more effective in improving the germination indices compared to other priming composition. However, in freshly harvested seeds, due to relative dormancy, treatment with GA was more effective compared to the other priming treatments. In the most of germination indices, seed priming at 20 °C along with 24 h showed higher effectiveness compared to other priming temperature and duration combinations. The overall results showed that the response of cumin seeds to different priming treatments depends on seed age.

Graphical Abstract

Efficacy of Priming Technique to Enhance Germination of Cumin (Cuminum cyminum) Seeds of Different Lifespans


  • Hydro-priming, hormonal, and osmopriming treatments improved the cumin seedling germination and growth.
  • Seeds with different lifetimes (freshly harvested, 12 and 24-month lifetimes) had rather different affectability compared to priming treatments.
  • Hormonal treatment with GA3 meaningfully increased germination and seedling indices of freshly harvested seeds compared to other priming and control treatments.


Main Subjects

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