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2025 Vol.70, Issue 4 Preview Page

Original Research Article

Changes in Growth, Yield, and Vegetation Indices of Potato under Different Drought Stress Intensities

수분 스트레스 강도에 따른 감자의 생육·수량 및 식생지수 변화

In-ha Lee1
,
Dong-won Kwon2
,
Sung-yul Chang2
,
Woo-jin Im2
,
Wan-Gyu Sang3
,
Hyeok-jin Bak4
,
Do-Hyun Kim5
,
Jung-Il Cho6
,
Nam-Jin Chung7
,
Woon-Ha Hwang6*
이 인하1
,
권 동원2
,
장 성율2
,
임 우진2
,
상 완규3
,
박 혁진4
,
김 도현5
,
조 정일6
,
정 남진7
,
황 운하6*
1Student, Crop National Institute of Crop and Food Science, RDA, Wanju 55365, Korea
2Junior Scientist, Crop National Institute of Crop and Food Science, RDA, Wanju 55365, Korea
3Junior Scientist, Crop National Institute of Crop and Food Science, RDA, Wanju 55365, Korea
4Professional Researcher, Crop National Institute of Crop and Food Science, RDA, Wanju 55365, Korea
5Private Expert, Crop National Institute of Crop and Food Science, RDA, Wanju 55365, Korea
6Senior Scientist, Crop National Institute of Crop and Food Science, RDA, Wanju 55365, Korea
7Professor, Department of Crop Science and Biotechnology, Chonbuk National University, Jeonju 54896, Korea
1농촌진흥청 국립식량과학원 재배생리과 산학연학생
2농촌진흥청 국립식량과학원 재배생리과 농업연구사
3농촌진흥청 국립식량과학원 기획조정과 농업연구사
4농촌진흥청 국립식량과학원 재배생리과 전문연구원
5농촌진흥청 국립식량과학원 재배생리과 민간전문가
6농촌진흥청 국립식량과학원 재배생리과 농업연구관
7전북대학교 작물생명과학과 교수
*Corresponding Author
1 December 2025. pp. 312-320
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Abstract

Recent climate change has increased rainfall irregularity and drought frequency during the spring potato growing season in Korea, raising concerns over yield stability. This study aimed to analyze the growth, yield, and physiological responses of two early-maturing potato cultivars, namely “Sumi” and “Jopung,” under precisely controlled drought conditions. Plants were grown in a rain-out shelter using an automated drip irrigation system, and various soil moisture levels were imposed. As soil moisture decreased, both cultivars showed reductions in plant height and leaf number. Aboveground dry weight, total yield, and marketable yield decreased significantly with increasing drought severity, and strong correlations (R² > 0.95) were observed between aboveground biomass and yield. Leaf spectral indices also responded sensitively to drought stress: NDVI and CRI1 decreased, reflecting reduced physiological activity and carotenoid-associated photoprotection, whereas FRI increased due to stress-induced flavonol accumulation. These results demonstrate the potential of portable leaf spectroscopy as a non-destructive phenotyping tool for assessing drought responses and predicting potato yield, particularly in controlled environments, such as greenhouses, where the application of remote sensing is limited.

Keywords
drought stress
optimized greenhouse
yield
potato
tuber
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Information
  • Publisher :The Korean Society of Crop Science
  • Publisher(Ko) :한국작물학회
  • Journal Title :The Korean Journal of Crop Science
  • Journal Title(Ko) :한국작물학회지
  • Volume : 70
  • No :4
  • Pages :312-320
  • Received Date : 2025-08-25
  • Revised Date : 2025-09-29
  • Accepted Date : 2025-10-02
  • DOI :https://doi.org/10.7740/kjcs.2025.70.4.312
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