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2025 Vol.70, Issue 1 Preview Page

Original Research Article

Quality Evaluation of Sweetpotato (Ipomoea batatas L.) Cultivars at Different Transplanting Dates

고구마 (Ipomoea batatas L.) 품종의 삽식시기별 품질평가

Yeon-Hu Woo1
,
Hyun-Hwa Park2
,
Yong-In Kuk3*
우 연후1
,
박 현화2
,
국 용인3*
1MS Student, Dep. of Oriental Medicine Resources, Sunchon National Univ., Suncheon 57922, Republic of Korea
2Ph. D Student, Dep. of Oriental Medicine Resources, Sunchon National Univ., Suncheon 57922, Republic of Korea
3Professor, Dep. of Oriental Medicine Resources, Sunchon National Univ., Suncheon 57922, Republic of Korea
1순천대학교 석사과정
2순천대학교 박사과정
3순천대학교 바이오한약자원학과 교수
*Corresponding Author
1 March 2025. pp. 9-25
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Abstract

This study examined the impact of transplanting dates (1st: early April, 2nd: mid-April, 3rd: late April, 4th: mid-May) on yield and quality characteristics of three sweet potato (Ipomoea batatas L.) cultivars — Sodammi, Jinyulmi, and Hopungmi — over the duration of 2023 and 2024. While patterns of the yields varied according to cultivar and year, the optimal transplanting period generally fell between the 2nd (mid-April) and 3rd transplanting date. Quality attributes such as hardness, sugar content, and color did not show consistent trends across the transplanting dates. However, ascorbic acid content peaked during the 2nd transplanting date for all the three cultivars. DPPH radical scavenging activity, total phenolic content, and total flavonoid content exhibited different results depending on the cultivar, transplanting date, and plant part; however, these parameters generally showed higher levels in the 2nd transplanting date. Sweet potato leaves demonstrated superior antioxidant activity compared to other plant parts. These findings suggest that the 2nd transplanting date (mid-April) is optimal when considering both yield and quality. This study provides crucial baseline data for determining the best transplanting time to enhance sweet potato quality and utilize various plant parts. Further investigation regarding the effect of environmental conditions on the quality characteristics is required.

Keywords
ascorbic acid
quality characteristics
secondary metabolites
sweet potato
transplanting date
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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 :1
  • Pages :9-25
  • Received Date : 2025-01-22
  • Revised Date : 2025-02-03
  • Accepted Date : 2025-02-05
  • DOI :https://doi.org/10.7740/kjcs.2025.70.1.009
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