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      • KCI등재

        연구보문 : 풋옥수수 수확 후 예냉처리와 저온저장에 따른 품질 변화

        김정태 ( Jung Tae Kim ),허온숙 ( On Sook Hur ),김선림 ( Sun Lim Kim ),김미정 ( Mi Jung Kim ),손범영 ( Beom Young Son ),이진석 ( Jin Seok Lee ),백성범 ( Seong Bum Baek ),서세정 ( Sea Jung Seo ),김욱한 ( Wook Han Kim ) 한국국제농업개발학회 2011 韓國國際農業開發學會誌 Vol.23 No.1

        Quality attributes of fresh waxy corn (Zea mays L.) as affected by pre-cooling and storage temperature (4˚C and room temperature) were investigated in terms of weight loss, moisture, color, reducing sugar content, and sensory quality. Two varieties of waxy corn with white and black kernel color, Ilmichal and Heukjinjuchal respectively, were cultivated at the field of National Institute of Crop Science in 2007 and 2008 to determine the physiologically optimal storage condition for higher eating quality stored in refrigerator of 4˚C and room temperature. They are pre-cooled immediately after harvest with ice for 5 hours. Quality analyses were monitored during 10 days at 4˚C storage room comparing with those of non cooled and stored at room temperature. A higher weight loss over 15% observed in both of two waxy corn varieties that were stored at room temperature. But there was not significantly difference with variety or pre-cooling treatment. There was up to 10% increase in moisture content in kernels non pre-cooled and stored at room temperature. For all treatments, very small amount of free sugar were detected, however, there were no significant differences between treatments. Glucose concentration increased with time in kernels stored at 4˚C and the effect of pre-cooling was not significant. A general darkening in color of kernels and a trend to turn yellow was observed in the pre-cooled corns when they were steam-cooked. Total sensory scores of corns stored in 4˚C were better than those of samples stored in room temperature and there was not significantly difference with variety or pre-cooling treatment. As storage period was longer, shelf lifes of waxy corn in control and waxy corn treated with technique applied to store waxy corn, and the quality of waxy corn could be maintained and the storage expense could be saved during storage. It is required that further studies narrow down the effect of pre-cooling on fresh waxy corn during short time storage.

      • KCI등재

        보리의 생육초기 염 스트레스에 따른 생리적 반응과 프로테옴 변화

        김대욱 ( Dea Wook Kim ),윤성근 ( Seong Kun Yun ),박형호 ( Hyoung Ho Park ),황종진 ( Jong Jin Hwang ),한옥규 ( Ok Kyu Han ),박태일 ( Tae Il Park ),정건호 ( Gun Ho Jung ),이재은 ( Jae Eun Lee ),김선림 ( Sun Lim Kim ),정영호 ( Young 한국국제농업개발학회 2011 韓國國際農業開發學會誌 Vol.23 No.5

        This study was conducted to obtain basic information on physiological and proteomic responses of barley seedlings to salt stress. Shoot dry weight decreased significantly as the level of soil salinity increased. Salt stress-induced decrease of relative shoot dry weight was lower in cv. "Sanglok" than in cv. "Sunwoo". Under the salt stress, SPAD value decreased, and the value was higher in cv. "Sanglok" than in cv. "Sunwoo". Sodium ion content in the leaves increased as NaCl concentration increased, and the content was higher in cv. "Sunwoo" than in cv. "Sanglok". The K+/Na+ratio was higher in cv. "Sanglok" than in cv. "Sunwoo". Salt stress-induced alterations in protein expression of the leaves were detected by two dimensional electrophoresis, and 47 protein spots showing altered expression were selected. Among the selected protein spots, 17 protein spots were up-regulated and 28 spots down-regulated in cv. "Sanglok". In cv. "Sunwoo", 14 protein spots were up-regulated and 27 spots down-regulated. Out of 47 deferentially expressed protein spots, 18 protein spots were identified using mass spectrometry and NCBI protein database. Among the identified proteins, ten proteins are known to be involved in various stress responses, but the others are not directly involved in stress responses.

      • KCI등재후보

        내도복 단교잡 사료용 옥수수 신품종 ‘청다옥’

        손범영(Beom-Young Son),백성범(Seong-Bum Baek),김정태(Jung-Tae Kim),이진석(Jin-Seok Lee),김선림(Wook-Han Kim),정건호(Jae-Hwan Roh),김욱한(Sun-Lim Kim),노재환(Gun-Ho Jung),권영업(Young-Up Kwon),지희정(Hee-Jung Ji),허창석(Chang-Suk Huh) 한국육종학회 2014 한국육종학회지 Vol.46 No.2

        Cheongdaok, a new single maize (Zea mays L.) variety, was developed by the maize breeding team at the National Institute of Crop Science (NICS), RDA in 2010. This high-yielding hybrid was produced by crossing two inbred lines, KS159 and KS155. KS159 is the seed parent and KS155 is the pollen parent of Cheongdaok. It is a yellow dent maize hybrid. After the preliminary yield trial and advanced yield trial of Cheongdaok in Suwon for two years, the regional yield trial was subsequently carried out for evaluation of its growth characteristics and yield at four different locations from 2008 to 2010. The silking date of Cheongdaok is one day earlier than that of the check hybrid, Kwangpyeongok. Compared to Kwangpyeongok, Cheongdaok show short in plant height and low in ear height ratio. It has resistance to lodging. The stay-green degree and the ear ratio of Cheongdaok are similar to Kwangpyeongok. It has moderate resistance to southern leaf blight (Bipolaris maydis) and strong resistance to northern leaf blight (Exserohilum turcicum). It has moderate resistance to black streaked dwarf virus(BSDV), ear lot, and corn borer. The dry matter yield 20.24 ton/ha and the total digestible nutrient (TDN) yield (13.80 ton/ha) of Cheongdaok were similar to Kwangpyeongok. The grain yield (8.51 ton/ha) of Cheongdaok was higher than that of Jangdaok. The seed production of Cheongdaok was well processed due to a good synchronization of flowering period during crossing between the seed parent KS159 and the pollen parent KS155, and the F1 seed yield was 1.8 ton/ha in Yeongwol.

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