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New Cultivar Developed

전분원료용 고구마 품종 ‘다원미’

문진영1, 정종일2, 김진영1, 문진성1, 신정호1, 윤혜숙1, 김선희1, 양문희1, 류언정1, 강찬희1, 조재원1, 이정순1

‘Dawonmi’, a Sweetpotato Cultivar for Starch Processing

Jin-Young Moon1, Jong-Il Chung2, Jin-Young Kim1, Jin-Seong Moon1, Jeong-Ho Shin1, Hye-suk Yoon1, Seon-Hui Kim1, Mun-Hee Yang1, Eon-Jung Ryu1, Chan-Hee Kang1, Jae-Won Cho1, Jung-Sun Lee1
Korean. J. Breed. Sci. 2026;58(2):169-177.
Published online: June 1, 2026

1경상남도농업기술원
2경상국립대학교 농업생명과학대학 농학과

1Gyeongsangnam-do Agricultural Research & Extension Services, Jinju 52733, Republic of Korea
2Department of Agronomy, Gyeongsang National University, Jinju 52828, Republic of Korea
Corresponding author:  Jin-Young Moon, Tel: +82-55-254-1233
Email: iammoonjy@korea.kr
• Received: February 24, 2026   • Revised: March 10, 2026   • Accepted: March 11, 2026
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‘다원미’는 전분 원료용으로 이용할 수 있는 다수성의 분질 고구마 품종을 육성하기 위하여 ‘Beniharuka’ (IT309504)을 모본, ‘진율미’ (IT309420)를 부본으로 하여 2023년 육성된 고구마 품종이다. ‘다원미’의 껍질색은 분홍색, 육색은 백색이며 괴근 모양은 원통형이다. ‘다원미’는 덩굴쪼김병에 저항성이고 뿌리혹선충에는 중도저항성이다. 찐고구마 육질은 ‘진율미’보다 더 분질이다. ‘다원미’의 찐고구마 유리당 함량은 22.4 g/100g dw로 ‘진율미’보다 다소 낮았다. ‘다원미’의 전분가는 28.9%로 ‘진율미’보다 높았고, 전분특성에서는 ‘다원미’는 ‘진율미’보다 최고점도는 284.3 RVU로 높고 강하점도와 응집점도는 각각 114.4 RVU와 53.9 RVU로 낮았다. 호화개시 온도는 79.7℃로 ‘진율미’보다 높아 ‘다원미’는 전반적으로 구조가 더 안정적이고 점성이 강한 특성을 나타냈다. 보통기재배시 ‘다원미’의 상저평균중은 237.1 g, 주당상품괴근수는 3.2개였으며 상저수량은 37.1 MT/ha로 ‘진율미’보다 54.6% 많았으며 전분수량은 13.7 MT/ha로 125% 많았다. ‘다원미’는 육질의 분질로 수량이 많고 전분 열 안정성과 겔 형성 능력이 우수한 전분특성이 있는 품종으로 가공산업에 활용이 높을 것으로 기대된다.

‘Dawonmi’ was developed in 2023 as a high-yielding, mealy-textured sweetpotato cultivar for starch processing. It was derived from a cross between ‘Beniharuka’ (IT309504) and ‘Jinyulmi’ (IT309420). The storage roots had pink skin, white flesh, and a cylindrical shape. ‘Dawonmi’ is resistant to Fusarium wilt and moderately resistant to root-knot nematode. When steamed, ‘Dawonmi’ exhibits a drier and more mealy texture than the check cultivar ‘Jinyulmi.’ The free sugar content of steamed roots was 22.4 g/100 g (dry weight basis), which was slightly lower than that of ‘Jinyulmi.’ In starch pasting properties, ‘Dawonmi’ showed a higher peak viscosity (284.3 RVU), lower breakdown viscosity (114.4 RVU), and lower consistency (53.9 RVU) than ‘Jinyulmi,’ along with a higher gelatinization onset temperature (79.7℃), indicating greater thermal and structural stability of the starch. Under normal-season cultivation, the average marketable root weight of ‘Dawonmi’ was 237.1 g, with 3.2 marketable roots per plant. The marketable root yield was 37.1 MT/ha, which was 54.6% higher than that of ‘Jinyulmi,’ and the starch yield reached 13.7 MT/ha, representing a 125% increase. These results suggest that ‘Dawonmi’ possesses high yield potential and favorable starch characteristics, making it suitable for starch-processing applications.

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‘Dawonmi’, a Sweetpotato Cultivar for Starch Processing
Korean. J. Breed. Sci.. 2026;58(2):169-177.   Published online June 1, 2026
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‘Dawonmi’, a Sweetpotato Cultivar for Starch Processing
Korean. J. Breed. Sci.. 2026;58(2):169-177.   Published online June 1, 2026
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