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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
Effects of PEG Priming and Fungicide Treatment on Kenaf (Hibiscus cannabinus L.) Seed Germination
Author(s)
In-Sok Lee, Chan-Ho Kang, Suk-Ju Kwon and Young-Eun Na
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DOI:10.17265/2161-6264/2018.05.002
Affiliation(s)
Jeollabuk-do Agricultural Research & Extension Services, Iksan City 54591, Korea
ABSTRACT
An experiment was conducted in the Jeollabuk-do Agricultural Research
and Extension Services, Korea from February to June 2017, to study the effect
of polyethylene glycol (PEG) on the germination of kenaf seeds variety
‘Jangdae’, which treated with seven PEG concentrations (0%, 10%, 20%, 25%, 30%, 35% and 40%) for 24 h at 20 °C in the dark, and evaluate the effect of
fungicide on surging kenaf seed germination in the field. Results showed that
the critical concentration rate needed to hasten germination based on
germination percentage, times to reach 50% of the final germination rate (T50) and mean no. of days
to germination (MDG) is using 10% PEG. A
maximum germination rate of 83.8% using hydro-priming (HP) (seed treated with HP) was observed during
the first 12 h of treatment. The control’s (Jangdae
seed) germination increased sharply and reached a maximum germination rate of
53.2% on the 21st day in the field. After 21 d, germination of all priming
treatments ranged from 13.8% to 26.3%. The palisade layer (PAL) after priming
treatment was more damaged than that of the control. Also, a significant difference on the acid level between the control and PEG
priming treatment (p < 0.05) was observed.
It was also found out that seed modifications after priming could affect in the
field. A fungicide called “Tiram” was used after
priming to help kenaf seeds decrease T50 and MDG, and increase germination
percentage. Results showed that application of fungicide after priming
optimizes seed germination and vigor. Therefore, it is recommended to
invigorate the kenaf seed before planting.
KEYWORDS
Kenaf, priming, polyethylene glycol, fungicide.
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