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2025 Vol.34, Issue 2 Preview Page

Original Articles

Growth Inhibition in Leaf Perilla Induced by Phosphorus Deficiency under Hydroponic Conditions

인산 결핍이 수경재배 잎들깨의 생장에 미치는 영향

Jin-Hyeon Kim1
,
Yeon-Ju Choi1
,
Jum-Soon Kang2*
김 진현1
,
최 연주1
,
강 점순2*
1Graduate student, Department of Horticultural Bioscience, Pusan National University, Miryang 50463, Korea
2Professor, Department of Horticultural Bioscience, Pusan National University, Miryang 50463, Korea
1부산대학교 원예생명과학과 대학원생
2부산대학교 원예생명과학과 교수
*Corresponding Author
30 April 2025. pp. 220-228
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Abstract

This study investigated the effects of phosphorus (P) deficiency on the growth and physiological responses of leaf perilla (Perilla frutescens) cultivated hydroponically using the deep flow technique (DFT). Phosphorus deprivation was induced by modifying the standard Yamazaki nutrient solution to create five deficiency levels: 0% (control), 30%, 50%, 70%, and 100%. Significant reductions in plant height, number of leaves, number of nodes, and stem diameter were observed with increasing P deficiency from 20 to 80 days after treatment. At 80 days, complete phosphorus deficiency (100%) resulted in a severe suppression of growth, reducing plant height and leaf number to 10.1 cm and 2.7 leaves per plant, respectively, compared to 73.5 cm and 12.8 leaves in the control. Fresh and dry weight also declined drastically under phosphorus-deficient conditions. Total fresh weight dropped from 93.4 g in the control to 2.1 g under 100% deficiency, while dry weight decreased from 11.8 g to 0.4 g per plant. Physiological disorders such as Chlorosis and necrosis of lower leaves were prominent under high deficiency levels. These findings underscore the critical role of phosphorus in supporting vegetative growth and biomass production in leaf perilla and provide a foundational reference for optimizing nutrient formulations in hydroponic systems to ensure sustainable crop productivity.

Keywords
deep flow technique (DFT)
mineral deficiency
nutrient solution
physiological disorders

본 연구는 담액수경재배(Deep Flow Technique, DFT)로 재배된 잎들깨(Perilla frutescens)의 생장 및 생리적 반응에 미치는 인산결핍의 영향을 분석하였다. 인산 결핍 처리는 야마자키 표준 배양액을 수정하여 0% (대조구), 30%, 50%, 70%, 100%의 5 수준으로 달리 조성하였다. 처리 20일부터 80일까지 인산 결핍 수준이 증가함에 따라 초장, 엽수, 마디 수, 경직경이 유의미하게 감소하였다. 80일째에는 100% 인산 결핍 처리에서 초장이 10.1cm, 엽수는 식물체당 2.7장으로 급감하였으며, 이는 대조구의 73.5cm 및 12.8장에 비해 현저한 생장 저해를 나타냈다. 또한, 인산 결핍 조건에서 생체중과 건물중 모두 현저히 감소하였으며, 대조구의 생체중은 93.4g 이었으나 100% 인산결핍 처리구에서는 2.1g으로, 건물중은 11.8g에서 0.4g으로 크게 감소하였다. 인산 결핍 정도가 증가할수록 하부엽에서 황화(Chlorosis) 및 괴사(Necrosis)와 같은 생리장해 증상이 뚜렷하게 나타났다. 이러한 결과는 인산이 잎들깨의 영양생장과 건물생산량 증가에 필수적인 역할을 수행함을 나타내었다.

키워드
담액수경
무기영양 결핍
배양액
생리장해
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Information
  • Publisher :The Korean Society for Bio-Environment Control
  • Publisher(Ko) :(사)한국생물환경조절학회
  • Journal Title :Journal of Bio-Environment Control
  • Journal Title(Ko) :생물환경조절학회지
  • Volume : 34
  • No :2
  • Pages :220-228
  • Received Date : 2025-04-23
  • Revised Date : 2025-04-28
  • Accepted Date : 2025-04-29
  • DOI :https://doi.org/10.12791/KSBEC.2025.34.2.220
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