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2025 Vol.34, Issue 4 Preview Page

Original Articles

Comparison of the Growth of Coleus (Plectranthus scutellarioides) Cuttings in Peatmoss and Perlite Substrates

피트모스와 펄라이트 혼합배지가 콜레우스(Plectranthus scutellarioides) 삽목시 생장에 미치는 영향 비교

Do Eun Kim1
,
Seo Youn Lee2
,
Yoon Jin Kim3*
김 도은1
,
이 서연2
,
김 윤진3*
1Undergraduate Student, Department of Horticulture, Biotechnology and Landscape Architecture, Seoul Women’s University, Seoul 01797, Korea
2Graduate Student, Department of Horticulture, Biotechnology and Landscape Architecture, Seoul Women’s University, Seoul 01797, Korea
3Professor, Department of Horticulture, Biotechnology and Landscape Architecture, Seoul Women’s University, Seoul 01797, Korea
1서울여자대학교 원예생명조경학과 학부생
2서울여자대학교 원예생명조경학과 대학원생
3서울여자대학교 원예생명조경학과 교수
*Corresponding Author
31 October 2025. pp. 596-603
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Abstract

Coleus (Plectranthus scutellarioides), an ornamental annual of the family Lamiaceae, is native to Malaysia and Southeast Asia and is cultivated in Korea as a spring-sown bedding plant. Its colorful foliage from early summer to late autumn makes it valuable for tropical-style flower beds due to diverse leaf colors and morphological variations. Coleus is commonly propagated by vegetative cuttings, but early growth is influenced by the rooting medium, requiring identification of the optimal substrate. This study investigated the effects of peatmoss (PT) and perlite (PL) on the early growth of coleus cuttings in two cultivars, ‘Pinkplosion’ and ‘Heartbreaker’. Rooting media consisted of PT:PL ratios of 1:0, 1:1, 1:2, and 0:1 (v/v), and a commercial substrate. Cuttings with two or four leaves were subirrigated with tap water and grown for 21 days. Growth parameters (plant height, leaf number, and survival rate) were recorded at 7-day intervals, and root traits (length, number) and shoot and root fresh and dry weights were measured on day 21. ‘Pinkplosion’ showed 100% survival in PT:PL = 1:2 and 0:1 treatments, but only 46.6% in PT:PL = 1:0 treatment. ‘Heartbreaker’ showed 100% survival in the PT:PL= 0:1 treatment and 36.0% in the PT:PL = 1:0 treatment. Root number in PT:PL = 1:2 treatment was 51.2 in ‘Pinkplosion’ and 35.4 in ‘Heartbreaker’, while in PT:PL = 0:1 treatment it was 16.8 and 18.0, for two cultivars. Root length in PT:PL = 1:2 treatment was 9.1 cm in ‘Pinkplosion’ and 13.6 cm in ‘Heartbreaker’, plant height in PT:PL=1:2 treatment was 9.4 cm and 12.4 cm, respectively. Leaf number and fresh and dry weights showed no significant differences among treatments. These findings demonstrate that substrate composition is a critical factor for early growth of coleus cuttings, and that PT:PL = 1:2 mixture provides the most suitable medium for both cultivars.

Keywords
plant survival
rooting characteristics
substrate composition
tropical plants
vegetative propagation

콜레우스(Plectranthus scutellarioides)는 말레이시아와 동남아시아 원산의 꿀풀과 초화로 우리나라에서는 춘파 1년초로 재배된다. 잎은 초여름부터 늦가을까지 관상할 수 있어 열대풍 화단의 중요한 소재로 활용되며 다양한 엽색과 형태적 변이로 관상적 가치가 높다. 콜레우스는 삽목에 의한 증식이 널리 이용되며, 초기 생육은 배지 조성의 영향을 받으므로 적절한 배지 조건 구명이 필요하다. 콜레우스 ‘Pinkplosion’과 ‘Heartbreaker’ 두 품종을 대상으로 피트모스(PT)와 펄라이트(PL)를 1:0, 1:1, 1:2, 0:1(v/v)로 혼합한 배지와 상업용 상토를 처리구로 설정하였다. 실험은 잎 2매 또는 4매의 삽수를 수돗물로 저면관수하여 21일간 진행하였다. 초장, 엽수, 생존율은 7일 간격으로 조사하였고, 21일째 뿌리 길이, 뿌리 개수, 지상부 및 지하부의 생체중과 건물중을 측정하였다. ‘Pinkplosion’은 PT:PL=1:2와 0:1 처리구에서 생존율 100.0%, 1:0 처리구에서 46.6%였다. ‘Heartbreaker’는 PT:PL=0:1 처리구에서 생존율 100.0%, PT:PL=1:0 처리구에서 36.0%였다. PT:PL= 1:2 처리구의 뿌리 개수는 ‘Pinkplosion’ 51.2개, ‘Heartbreaker’ 35.4개였으며, PT:PL=0:1 처리구에서는 각각 16.8개, 18.0개였다. PT:PL=1:2 처리구의 뿌리 길이는 ‘Pinkplosion’ 9.1cm, ‘Heartbreaker’ 13.6cm였고, 초장은 PT:PL=1:2 처리구에서 각각 9.4cm, 12.4cm였다. 두 품종의 엽수, 생체중과 건물중은 처리 간 유의한 차이는 없었다. 배지 조성은 콜레우스 삽수의 초기 생육에 중요한 요인이며, 두 품종 모두 PT:PL=1:2 혼합배지가 생육에 가장 효과적인 것으로 판단된다.

키워드
발근 특성
배지 조성
생존율
열대 식물
영양 번식
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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 :4
  • Pages :596-603
  • Received Date : 2025-10-02
  • Revised Date : 2025-10-29
  • Accepted Date : 2025-10-30
  • DOI :https://doi.org/10.12791/KSBEC.2025.34.4.596
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