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2025 Vol.34, Issue 2 Preview Page

Original Articles

Morphological and Physiological Changes of Strawberry Seedlings Under Flower-inducing and Non-inducing Conditions

꽃눈 분화 유도 조건에 따른 딸기 묘의 형태적 및 생리학적 변화

Jean Nepo Ndikumana1
,
Young Hun Lee2
,
Hyoung Seok Kim3
,
Young Rog Yeoung4*
다쿠마나 진 네포1
,
이 영훈2
,
김 형석3
,
용 영록4*
1Graduate Student, Department of Plant Science, Gangneung-Wonju National University, Gangneung 25457, Korea
2Research Professor, Wellbeing Agro-Industry Research Center, Gangneung-Wonju National University, Gangneung 25457, Korea
3Senior Researcher, Smart Farm Research Center, Korea Institute of Science and Technology (KIST), Gangneung, 25451, Korea
4Professor, Department of Plant Science, Gangneung-Wonju National University, Gangneung 25457, Korea
1강릉원주대학교 식물생명과학과 대학원생
2강릉원주대 웰빙농산업정보원 연구교수
3한국과학기술원 책임연구원
4강릉원주대학교 식물생명과학과 교수
*Corresponding Author
30 April 2025. pp. 198-206
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Abstract

We examined the morphological and physiological responses of ‘Seolhyang’ strawberry seedlings to two distinct environments: a flower-inducing condition (short-day, 15°C nighttime temperature) and a non-flower-inducing condition (continuous light and 24－25°C temperature) during the critical flower initiation period. The seedlings were monitored for phenotypic variation, dry matter, and soluble sugar distribution. The results, analyzed via principal component analysis (PCA) and paired t-tests, suggested that a larger crown diameter, increased root biomass, and higher leaf chlorophyll concentration may be prominent early indicators of the reproductive stage of strawberry seedlings. In contrast, increases in traits such as leaf number, leaf area, shoot fresh weight, and number of runners might indicate a more robust vegetative phase. This study revealed that these morphological adaptations are linked to physiological shifts that enhance or diminish the capacity of plants to initiate flowering under favorable conditions.

Keywords
chlorophyll content
crown diameter
flower initiation
petiole length
reproductive stage

본 연구는 ‘설향’ 딸기 유묘를 대상으로, 꽃눈 분화 유도 조건(단일일장, 야간 15°C)과 비유도 조건(연속광, 24－25°C)에서의 형태적 및 생리적 반응을 비교하여, 꽃눈 분화와 관련된 주요 생장 지표를 확인하고자 수행되었다. 유묘는 15일간 각각의 환경 조건에 따라 처리된 후, 모든 처리구를 동일한 비유도 조건(연속광, 24－25°C) 하에 배양하며 총 49일간 관찰하였다. 관부 직경, 잎 수, 엽면적, 런너 수 등 형태적 지표와 함께 건물중 분포, 엽록소 농도(SPAD), 가용성 당(자당, 포도당, 과당) 함량을 조사하였다. 그 결과, 꽃눈 분화 유도 처리군은 관부 직경과 뿌리 생체량, 잎의 엽록소 농도가 유의하게 높았으며, 이는 생식 생장으로의 전환을 나타내는 초기 지표로 판단되었다. 반면, 비유도 조건에서는 잎 수, 런너 수, 줄기 생체중, 엽면적이 증가하여 영양생장이 지속됨을 확인하였다. 특히, 유도 처리 28일 이후 관부 내 자당 농도가 두드러지게 증가하였으며, 이는 꽃눈 분화 개시와의 관련성을 시사한다. 본 연구는 환경 조건에 따른 딸기 유묘의 생장 반응 차이를 규명하고, 꽃눈 분화 예측과 정식 시기 결정을 위한 유용한 생리적 지표를 제시함으로써, 환경 제어 기반의 효과적인 유묘 관리 전략 수립에 기초자료를 제공할 수 있을 것으로 기대된다.

키워드
관부 직경
꽃눈 분화
생식 단계
엽록소 함량
엽병 길이
영양 생장
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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 :198-206
  • Received Date : 2025-04-10
  • Revised Date : 2025-04-26
  • Accepted Date : 2025-04-28
  • DOI :https://doi.org/10.12791/KSBEC.2025.34.2.198
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