Seedling Emergence Responses of Trichosanthes kirilowii Maxim. to Gibberellic Acid Pre-soaking and Seed Coat Modification

Kyungtae Park; Young Gu Kang; Bo-Ram Choi; Yu Su Shin; Yunji Lee

doi:10.7732/kjpr.2026.39.5.247

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2026 Vol.39, Issue 5 Preview Page Next Page

Research Article

Seedling Emergence Responses of Trichosanthes kirilowii Maxim. to Gibberellic Acid Pre-soaking and Seed Coat Modification GA₃ 침지 및 종피 처리에 따른 하늘타리 종자의 유묘 출현 반응

1 October 2026. pp. 247-255

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Abstract

Rapid, uniform seedling emergence supports efficient propagation of Trichosanthes kirilowii Maxim. This study evaluated water uptake and emergence responses to gibberellic acid (GA₃) pre-soaking and seed coat modification. Seed viability and laboratory germination were 84% and 86.0%, respectively. Partial scarification accelerated water uptake, reaching 65.1% after 1 d compared with 29.5% in intact seeds; treatment differences were significant only during the first 2 d. GA₃ pre-soaking at 100~500 ㎎·L^-1 did not significantly improve emergence percentage, time to 50% of final emergence (E₅₀), or mean emergence time (MET). At 500 ㎎·L^-1, first emergence occurred earlier and the coefficient of variation of emergence time (CVt) was higher than in the non-soaked control; neither differed significantly from the water-soaked control. Seed coat modification did not significantly affect final emergence percentage but progressively shortened MET from 21.5 d in intact seeds to 17.9 d in partially scarified seeds and 15.7 d in decoated seeds. Decoated seeds emerged earliest but had significantly higher CVt. Partial scarification advanced emergence without significantly increasing CVt. These findings suggest that seed coat-associated factors contribute to emergence delay and that partial scarification is a promising treatment for accelerating emergence under the tested conditions.

Keywords

Gibberellic acid

Scarification

Seed coat

Trichosanthes kirilowii

Water uptake

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Information

Publisher :The Plant Resources Society of Korea
Publisher(Ko) :한국자원식물학회
Journal Title :Korean Journal of Plant Resources
Journal Title(Ko) :한국자원식물학회지
Volume : 39
No :5
Pages :247-255
Received Date : 2026-08-13
Revised Date : 2026-08-20
Accepted Date : 2026-08-27
DOI :https://doi.org/10.7732/kjpr.2026.39.5.247

Korean Journal of Plant Resources ISSN:1226-3591(Print) 2287-8203(Online) 한국자원식물학회지

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