식용 고구마 신품종 ‘건황미’
A New Sweetpotato Variety ‘Geonhwangmi’ for Table Use
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초록
‘건황미’는 식미가 우수한 덩굴쪼김병 저항성 고구마 품종을육성하기 위하여 2005년에 덩굴쪼김병 저항성인 ‘신건미(Ahn et al. 2002)’ 품종을 모본, ‘목포34호’를 부본으로 하여 인공교배하였다. 2006년부터 2008년까지 실생개체선발시험과 계통선발시험, 2009년부터 2010년까지 생산력검정시험을 수행하여 괴근 육색이 담주황색이고 괴근 모양, 수량성, 식미가 양호한‘MI2005-15-01’ 계통을 ‘목포81호’로 계통명을 부여하여 지역적응시험에 공시하였다. 2011년부터 2013년까지 3년간 지역적응시험을 수행한 결과, 수량성, 품질특성, 병해충저항성 등이대비품종인 ‘율미’보다 우수하여(RDA 2012a, 2013a, 2014) 2013년 12월 농촌진흥청 농작물직무육성신품종선정심의회에서 신품종으로 선정되었으며 ‘건황미’라 명명하였다. ‘건황미’는잎의 결각이 5개이고, 결각의 깊이는 중간이며 엽색, 잎자루색, 줄기색은 녹색이다. 괴근의 껍질색은 홍색, 육색은 담주황색이며괴근 모양이 방추형이다. ‘건황미’는 덩굴쪼김병에 중도저항성이며 고구마뿌리혹선충에 저항성이다. ‘건황미’는 건물률이29.4%로 ‘율미’보다 낮고 찐고구마의 육질이 중간질이다. ‘건황미’의 찐고구마 수크로오스 함량은 ‘율미’보다 높고 식미가 우수하다. ‘건황미’ 괴근의 베타카로틴 함량은 3.4 mg/100g DW이며‘주황미’의 7.8% 수준이다. ‘건황미’는 조기재배시 상품괴근수량이 23.0 MT/ha으로 ‘율미’의 16.5 MT/ha보다 39% 많았다. 적기 및 만기재배시 ‘건황미’의 주당상품괴근수는 2.6개/주, 상품괴근평균중은 151 g/개였으며 상품괴근수량은 24.2 MT/ha으로 ‘율미’보다 45% 많았다(품종보호권 등록번호: 제5853호, 2016. 01. 12).
Abstract
‘Geonhwangmi’, a new sweetpotato variety, was developed for table use by Bioenergy Crop Research Institute, National Institute of Crop Science (NICS), and RDA in 2013. This variety was derived from the cross between ‘Singeonmi’ and ‘Mokpo34’ in 2005. The seedling and line selections were performed from 2006 to 2008, preliminary and advanced yield trials were carried out from 2009 to 2010. The regional yield trials were conducted at five locations from 2011 to 2013, and it was named as ‘Geonhwangmi’. This variety has five-lobed leaf, and its leaves, stems, and petioles are green. Storage root of ‘Geonhwangmi’ has an elliptical shape, red skin, and light orange flesh. ‘Geonhwangmi’ was moderately resistant to fusarium wilt, and resistant to root-knot nematode. Dry matter content was 29.4%, and texture of steamed storage root was intermediate. Sucrose content of steamed storage root of ‘Geonhwangmi’ was higher than that of ‘Yulmi’, and steamed storage root palatability of ‘Geonhwangmi’ was better than that of ‘Yulmi’. β-carotene content of ‘Geonhwangmi’ was 3.4 mg/100g DW, which was 7.8% of ‘Juhwangmi’. Yield of marketable storage root over 50 g of ‘Geonhwangmi’ was 23.0 MT/ha under the early seasonal cultivation, which was 39% higher than that of ‘Yulmi’. The number of marketable storage roots per plant was 2.6 and the average weight of marketable storage root was 151 g under the optimal and late seasonal cultivation. Marketable storage root yield of ‘Geonhwangmi’ was 24.2 MT/ha under the optimum and late seasonal cultivation, which was 45% higher than that of ‘Yulmi’. (Registration No. 5853).
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