Seed Germination Induction and Response of Seedling Growth of Primrose (Primula vulgaris) to Different Treatments of Mechanical Scarification and Chemical Pre-treatment

Document Type : Original Article

Authors

1 Department of agronomy,college of agriculture, Islamic Azad university- Arak branch

2 Department of seed science and technology, Islamic Azad University, Ashtian Branch

Abstract

In order to seed germination induction and response of seedling growth of Primula vulgaris to different treatments of mechanical scarification and chemical pre-treatment, an experiment was carried out in completely randomized design with treatments of control, seed scarification (for 3 minute), warm water 70 and 90˚C, priming with potasium nitrate at the rate of 2 and 4%, gibberellic acid at the concentration of 250 and 500 mg/L with three replicates in 2013. The results showed that treatments of seed scarification, warm water 70 and 90˚C and gibberellic acid of 250 and 500 mg/L increased the seedling emergence percentage compared to the control. The maximum of the daily emergence percentage recorded from gibberellic acid of 250 mg/L. Seed treatment with potasium nitrate of 2 and 4% decreased the mean emergence time by 61.2 and 51.7% compared with the control, respectively. The highest emergence rate coefficient equal to 0.094 and 0.092 was achieved from seed treatment with potasium nitrate of 2 and 4% .The maximum seedling length (5.53 cm), seedling dry weight (0.029 g), seedling vigor weight index (1.15) was obtained at gibberellic acid of 250 mg/L treatment. Treatments of seed scarification, warm water 70 and 90˚C, gibberellic acid at the concentration of 250 and 500 mg/L increased seedling vigor weight index compared to the control, significantly. In general, seed pre-treatment of Primula vulgaris with gibberellic acid of 250 mg/L was improved germination and seedling growth indices.

Keywords

References

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