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A Sweet potato Cultivar ‘Jeonmi’ for Starch Processing
전분용 고구마 신품종 ‘전미’
Korean J. Breed. Sci. 2013;45(4):440-444
Published online December 31, 2013
© 2013 Korean Society of Breeding Science.

Joon Seol Lee1*, Mi Nam Chung1, Young Sup Ahn2, Hag Sin Kim3, Yeon Sang Song1, Hyeong Kwon Shim3, Seon Kyeong Han1, Jae Myeong Kim1, Sae Jung Suh4, Jeong Ju Kim3, Kwang Ho Jeong5, and Jae-Sung Choi3

1Bioenergy Crop Research Center, National Institute of Crop Science, RDA, Muan 534-833, Korea2National Institute of Horticultural & Herbal Science, RDA, Suwon 441-857, Korea3Dept. Rice and Winter Cereal Crop, National Institute of Crop Science, RDA, Iksan 570-080, Korea4Technology Cooperation Bureau, RDA, Suwon 441-707, Korea5National Institute of Crop Science, RDA, Suwon 441-100, Korea
1농촌진흥청 국립식량과학원 바이오에너지작물센터, 2농촌진흥청 국립원예특작과학원 인삼특작부, 3농촌진흥청 국립식량과학원 벼맥류부, 4농촌진흥청 기술협력국, 5농촌진흥청 국립식량과학원
‘Jeonmi’ is a sweet potato variety developed by Bioenergy Crop Research Center in the National Institute of Crop Science (NICS) at RDA for starch in 2009. This variety was selected from the cross between ‘Jinhongmi’ and 99IT55-2 in 2000. Line selections were practiced from 2001 to 2003. Preliminary and advanced yield trials were carried out from 2004 to 2005. The regional yield trials were conducted at six locations from 2006, 2008 to 2009. ‘Jeonmi’ has cordate leaf, green vine and petiole, elliptic storage root, red skin and light yellow flesh color of storage root. This variety is resistant to Fusarium wilt and nematode. The starch value is 25.6%. Starch yield is 6.8 ton/ha, which is 26% higher than that of ‘Yulmi’ variety. The total sugar content is 3.59 g/100 g D.W.. Initial temperature of starch gelatinization in ‘Jeonmi’ is lower than 79.9℃, and the retrogradation process is more late than ‘Yulmi’. The average yield of storage root was 26.2 ton/ha in the regional yield trials, which was 39% higher than that of ‘Yulmi’ variety. The number of storage roots over 50 g per plant was 3.0 and the average weight of one storage root was 178 g.
Keywords : Sweetpotato, Breeding, Cultivar, Starch, Jeonmi

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