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KMID : 1098420180260010055
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Korean Journal of Medicinal Crop Science
2018 Volume.26 No. 1 p.55 ~ p.63
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Effects of Polyethylene Glycol Priming on Seed Germination of the Medicinal Plant, Kenaf
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Lee In-Sok
Kang Chan-Ho
Lee Ki-Kwon
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Abstract
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Background: The present study assessed the response of kenaf (Hibiscus cannabinus L., Jangdae) seed to NaCl and the effects of polyethylene glycol (PEG) on kenaf seed germination and vigor..
Methods and Results: Seed germination ranged from 11.3% to 58.8% after 24 hours of immersion in NaCl concentrations from 0% to 0.5%. The priming treatments had lower electrical conductivity (EC) values for the seeds than for the control and a deteriorated palisade layer. Priming in 10% PEG for 48 hours increased the germination upto 96.3% in H2O solution and 98.8% in 0.3% NaCl solution compared to that of the control (78.8%). Germination synchronization, and shoot and root growth of the primed seeds were greater than those of the control. The T50 of the control in H2O and 0.3% NaCl solution was 22 and 28 times, respectively. After priming, nine times was sufficient to reach T50 in both solution. The mean number of days to germination (MDG) decreased from 1.43 days for the control to 0.55 days for 0% PEG in H2O solution and from 1.57 days for the control to 0.56 days for 0% PEG in 0.3% NaCl solution. The dry weight after the 10% PEG treatment was higher than that of the control.
Conclusions: Taken together, 10% PEG treatment for 24 hours is recommended for kenaf seed invigoration before planting.
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KEYWORD
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Hibiscus cannabinus L., Priming, Polyethylene Glycol, Germination Percentage
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