논 재배에 적합한 가공용 고구마 품종 선발을 위한 수량성 평가

• Published in: Korean journal of crop science Vol. 68; no. 1; pp. 27 - 33
• Main Authors: 박원, Won Park, 정미남, Mi Nam Chung, 이형운, Hyeong-un Lee, 김태화, Tae Hwa Kim, 김수정, Su Jung Kim, 남상식, Sang Sik Nam
• Format: Journal Article
• Language: Korean
• Published: 한국작물학회 01.03.2023
• Subjects: growth characteristic; paddy cultivation; starch; sweetpotato; yield; 농학; starch; sweetpotato; growth characteristic; paddy cultivation; yield
• ISSN: 0252-9777; 2287-8432

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.