KOREAN JOURNAL OF CROP SCIENCE (한국작물학회지)

The Korean Society of Crop Science (한국작물학회)
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Alteration Yield Traits of Sweetpotato (Ipomoea batatas L.) Cultivars Suitable for Paddy Cultivation

논 재배에 적합한 가공용 고구마 품종 선발을 위한 수량성 평가

  • Won Park (Bioenergy Crop Research Institute, National Institute of Crop Science, Rural Development Administration) ;
  • Mi Nam Chung (Bioenergy Crop Research Institute, National Institute of Crop Science, Rural Development Administration) ;
  • Hyeong-Un Lee (Bioenergy Crop Research Institute, National Institute of Crop Science, Rural Development Administration) ;
  • Tae Hwa Kim (Bioenergy Crop Research Institute, National Institute of Crop Science, Rural Development Administration) ;
  • Su Jung Kim (Bioenergy Crop Research Institute, National Institute of Crop Science, Rural Development Administration) ;
  • Sang Sik Nam (Bioenergy Crop Research Institute, National Institute of Crop Science, Rural Development Administration)
  • 박원 (국립식량과학원 바이오에너지작물연구소 ) ;
  • 정미남 (국립식량과학원 바이오에너지작물연구소) ;
  • 이형운 (국립식량과학원 바이오에너지작물연구소 ) ;
  • 김태화 (국립식량과학원 바이오에너지작물연구소 ) ;
  • 김수정 (국립식량과학원 바이오에너지작물연구소) ;
  • 남상식 (국립식량과학원 바이오에너지작물연구소 )
  • Received : 2022.12.30
  • Accepted : 2023.02.15
  • Published : 2023.03.01
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Abstract

Several domestically consumed sweetpotato derivatives, such as sweetpotato starch for processing raw materials, frozen and refrigerated paste, and powder are dependent on imports. This study was conducted to examine the suitability of sweetpotato cultivars of twelve varieties (powdery-type and viscous type) cultivated in paddy fields, for use in starch, chips, dried products, and beverages. The two-year average yield results of the four cultivars suitable for starch (in order of highest to lowest yield) was as follows: Gogeonmi (4,018 kg/10a); Daeyumi (3,615 kg/10a); Jinhongmi (3,426 kg/10a); Singeonmi (2,837 kg/10a). The starch content was 20.2%, 18.2%, 21.2%, and 20.6% in Daeyumi, Gogeonmi, Singeonmi, and Jinghongmi, respectively. The total amount of starch was higher in Daeyumi (730 kg/10a) and Gogeonmi (731 kg/10a) than that in Singeonmi and Jinghongmi. The yield of Pungwonmi and Shinjami were 4,443 and 3,602 kg/10a, respectively. Powdery-type sweetpotatoes (Daeyumi and Gogeonmi) showed the low decay rates of all cultivars (0.8 and 0%, respectively). The yield of the storage root formation and storage root swelling stages by water-logging treatment decreased by 16.5% and 15.4% for Pungwonmi, and by 17.2% and 10.0% for Shinjami. Drainage management of paddy fields is necessary to reduce the damage caused by water-logging. Our results suggest that cultivation of sweetpotato varieties suitable for processing raw materials in paddy fields will enable stable yields of sweetpotato with a high starch content.

가공원료용 고구마 전분, 냉동 및 냉장 상태의 페이스트, 맛탕용, 가루 등 국내에서 소비되는 대부분은 수입에 의존하고 있다. 본 시험은 고구마를 논에 재배하여 생산할 목적으로 전분용, 칩, 말랭이 및 음료 등에 적합한 품종을 선발하고자 수행하였다. 1. 전분용으로 적합한 4품종의 2년 평균 수량은 고건미(4,018 kg/10a) > 대유미(3,615 kg/10a) > 진홍미(3,428 kg/10a) > 신건미(2,837 kg/10a) 순으로 나타났다. 2. 전분함량은 대유미 20.2%, 고건미 18.2%, 신건미 21.2%, 진홍미 20.6% 이었으며, 단위면적당 총 전분 수량은 대유미와 고건미가 각각 730 및 731 kg/10a로 많았다. 3. 칩, 말랭이용으로 적합한 품종인 '풍원미'와 음료, 분말 등으로 이용 가능한 자색품종인 '신자미'의 2년 평균 수량은 각각 4,443 및 3,602 kg/10a로 논 재배 적응성이 좋았다. 4. 분질고구마 신천미의 부패율은 36.7%로 저장성이 가장 낮았고 대유미, 고건미는 부패율이 0.0~0.8%로 저장성이 양호한 경향이었다. 풍원미와 신자미의 부패율은 각각 25 및 7.5% 수준이었으나 가공용으로 단기저장의 경우는 문제가 되지 않을 것으로 판단되었다. 5. 습해처리구에서 풍원미의 수량은 대조구에 비해 괴근형성기의 경우 16.5%, 괴근비대기에서는 15.4% 감소하였으며, 신자미의 경우 각각 17.2 및 10.0% 감소하였다.

Keywords

Acknowledgement

본 논문은 농촌진흥청(과제번호:PJ013824) 과제 연구비 지원에 의해 수행된 결과이며 연구비지원에 감사드립니다.

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