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      • KCI등재

        Germination Characteristics of Photoblastic Weedy Rice (Oryza sativa L.) Seed

        Sang Yeol Kim(김상열),Sun Joo Hwang(황선주),In Jung Lee(이인중),Dong Hyun Shin(신동현),Sung Tae Park(박성태),Un Sang Yeo(여운상),Hang Won Kang(강항원) 韓國雜草學會 2009 Weed&Turfgrass Science Vol.29 No.4

        광발아성을 가진 것으로 추정되는 검은색 종피 잡초성 벼의 발아 특성을 구명하며 잡초성벼 방제의 기초자료로 제공하고자 백색광, R 및 FR광에 따른 발아특성, 종피의 영향 및 암흡습으로 인한 2차 휴면특성을 조사하였다. 광발아성 추정 잡초성 벼의 발아율은 광조건에서 100%이었으나 암조건에서는 6%로 낮았고 R광 처리시 발아율이 증가하였으며 R광 처리후 FR광 처리시 발아율이 감소하였다. 또 R광과 FR광 혼합처리시 혼합횟수에 관계없이 마지막 광이 R이면 발아가 촉진되었고 FR이면 발아가 억제되어 검은색 종피 잡초성벼는 광발아성 종자임이 확인되었다. 또 종피를 제거했을 경우 광발아성 특성을 나타내지 않았고, 종자를 암상태에서 수분을 흡수시킬 경우 2차 휴면으로 인해 발아율이 낮아졌는데 2차 휴면 정도는 암흡습 기간이 길수록 증가되어 5일 이후에는 발아율이 1% 이하로 낮았다. The effects of different light qualities on the germination characteristics of a newly-discovered black-hulled weedy rice line that shows photoblastism was evaluated. In addition, the effects of rice hull and dark imbibition duration on germination was also studied. The germination percentage under white light was greater than 98% and less than 6% in darkness, indicating that the black-hulled weedy rice sees as positively photoblastic. While red light (R) stimulated germination, the germination was lower than in the white light treatment and the germination percentage of the seeds exposed to far-red light (FR) was similar to those maintained in darkness. The exposure to R for 30 sec. increased germination and this effect was saturated at an exposure of 15 min. The R effect was reversed by subsequent exposure to FR. Phytochrome control of the photoblastic weedy rice seed germination was confirmed by R/FR reversibility. The removal of the hull restored seed germination completely even in dark condition. Non-dormant weedy rice seeds imbibed in the dark enter a deep secondary dormancy, the depth of which was positively related to the duration of imbibition period. These results show that the black-hulled weedy rice seeds exhibit phytochrome-meditated photoblasticity, hull-imposed dormancy and secondary dormancy.

      • KCI등재

        Mesotrione 함유 제초제에 대한 벼 생태형간 약해반응 차이

        김상열(Sang-Yeol Kim),이지윤(Ji-Yoon Lee),여운상(Un-Sang Yeo),오성환(Seong-Hwan Oh),박성태(Sung-Tae Park),이종희(Jong-Hee Lee),정국현(Kuk-Hyun Jeong),조준현(Jun-Hyeon Cho),송유천(You-Chun Song),강항원(Hang-Won Kang) 韓國雜草學會 2010 Weed&Turfgrass Science Vol.30 No.3

        최근에 등록된 mesotrione+pretilachlor(MR) 및 bensulfuron-methyl+mesotrione+pretilachlor+pyriftalid(BMPP)에 대한 벼 생태형간 약해 반응을 조사하기 위해 통일형(장립종)및 일본형(단립종) 각 3 품종을 표준량과 2배량을 처리하여 온실에서 포트시험한 결과는 다음과 같다. 제초제 MP 및 BMPP에 대한 약해 반응은 벼 생태형에따라 달랐는데 통일형 품종은 모두 감수성을 보였으나 일본형 벼는 약해가 발생하지 않았다. 통일형 벼는 제초제 처리 후 5일부터 백화증상을 보였고 7일에 약해증상이 뚜렷하였으며 처리 후 14일에는 약해증상이 처리 후 7일 보다 약해지는 경향이었다. 약해정도는 처리농도가 증가할 수록 약해 발생이 심하였다. MP 및 BMPP에 대한 통일형 벼 품종의 초장억제율은 90g a.i. ha-1(표준량)에서 18~43%, 배량에서 30~50% 억제되었고 건물중은 초장보다 억제가 더 커 표준량에서는 46~73%, 배량에서는 65~82%가 억제되었고 억제정도는 농도가 증가할수록 컸다. 하지만 대부분의 일본형 벼는 제초제 2배에서도 약해증상을 보이지 않았으나 초장 및 건물중이 약간 억제 되었다. 벼 생태형별 MP에 대한 50% 생육억제 농도를 조사한 결과, 통일형 벼는 37g a.i. ha-1로 일본형 벼의 476g a.i. ha-1보다 12.9배나 낮았다. 이상의 결과에서 mesotrione을 함유하고 있는 MP 및 BMPP에 대한 벼 생태형간 반응에 차이가 있고, 초다수형 벼 재배시 초기잡초발아전 제초제로서 MP 및 BMPP의 사용을 자제하는 것이 바람직하다. Greenhouse experiment was conducted to evaluate tolerance of six rice cultivars, three Indica×Japonica rice (long grain, cv. Dasanbyeo, Segejinmi and Hanareumbyeo) and three Japonica rice (short grain Nampyung, Ilpumbyeo and Junamjosaeng) cultivars, to mesotrione+pretilachlor (MP) and bensulfuron-methyl+mesotrione+pretilachlor+pyriftalid (BMPP) in transplanting rice. Two herbicides were applied at 90 g and 180 g a.i. ha-1 to three to four leaf stage rice at 5 and 15 days after transplanting, respectively. Related study was also conducted to compare GR50 for Indica×Japonica and Japonica rice cultivars at different MP rates. Response to two herbicides varied with respect to rice cultivars and herbicide rates. All Indica×Japonica rice cultivars exhibited susceptible to both MP and BMPP as reflected by increased visual injury, shorter plant height and higher plant dry matter reduction when compared with non treated rice cutlivars. The degree of foliar chlorosis by MP at 90 g a.i, ha-1 was 5~6 at 7 days after treatment(DAT) but it was decreased to 3~6 at 14DAT. The degree of leaf chlorosis treated with 180 g a.i. ha-1 MP was 6~7 at 7DAT and it was also decreased to 3~8 at 14 DAT. The plant hight of Indica×Japonica rices was inhibited by 18~43% at application of 90 g a.i. ha-1 MP and 30~50% at 180 g a.i, ha-1 MP. The dry matter reduction was greater than that of plant height inhibition, showing 46~73% at 90 g a.i. ha-1 MP and 65~82% at 180 g a.i. ha-1 MP. Similar leaf chlorosis injury and growth inhibition of rice cultivars was observed in the BMPP treatment. The injury and growth inhibition by MP and BMPP increased with increase in herbicide rate from 90 g a.i. ha-1 to 180 g a.i. ha-1. However, most of the Japonica cultivars are tolerant to MP and BMPP at both rates. There was no visible leaf chlorosis but plant height and dry matter production were slightly reduced at 180 g a.i. ha-1. Based on GR50 valus determined in redyction of shoot dry weight for MP, the Indica×Japonica rice showed 12.9 fold lower compared with the Japonica rice. The result indicates that rice cultivars vary in tolerance to hebicides of MP and BMPP and Indica×Japonica rices were more susceptible than the Japonica rices to the MP and BMPP.

      • KCI등재

        소규모 공원 조성을 위한 국공유지의 적합성 평가 - 부산광역시를 대상으로 -

        김영하,여운상,Kim, Yeong-Ha,Yeo, Un-Sang 한국조경학회 2010 韓國造景學會誌 Vol.38 No.5

        본 연구는 부산광역시 국공유지 자투리땅을 대상으로, 공원으로 조성 가능성을 판단하기 위한 실태파악과 적합성 평가에 대한 방법론적 접근을 제시하는 것을 목적으로 하고 있다. 이러한 연구목적을 달성하기 위해서 부산광역시의 국공유지 지목에 대한 재산 목록과 지적도면, 위성영상을 활용하여 국공유지 자투리땅의 현황 파악과 GIS분석을 통한 공원 적합성 평가 및 국공유지 자투리땅의 토지 특성을 분류했다. 그 결과, 공원으로 조성 가능한 국공유지 자투리땅은 516개소($375,934m^2$)이며, 평지에 위치한 토지가 39%로 가장 많이 분포했다. 또한, 토지 특성은 $500m^2$ 미만이며, 경사도 $5^{\circ}$ 이상의 평지형과 개방형이 가장 높은 비율을 차지했고, 부지수의 25.4%를 차지했다. 그리고 공원 조성에 적합한 부지 선정을 위해 예상 공원이용자 및 공원소외를 고려한 필요성, 토지이용 현황에 대한 공원 공급을 고려한 용이성, 접근성을 배려한 이용가능성의 세 가지 판단기준에 따라 평가한 결과는 조성 가능한 공원의 최적합지로 필요성 260개소, 용이성 305개소, 이용가능성 267개소이며, 이러한 기준의 최대 적합지로서는 61개소가 분석되었다. 이러한 결과는 국공유지의 단순한 유지 보존의 차원을 넘어 적극적인 활용하기 위해 자료를 시각화하여 나타낼 수 있는 GIS DB(Date Base) 구축에 대한 방법론과 향후 국공유지 자투리땅의 활용 및 관리에 기초적 자료를 제시했다고 볼 수 있다. This research aims to present a methodological approach for repurposing small pockets of national/public lands, which can be constructed as parks, through an investigation of the present status of these areas of national/public lands that are scattered around Busan Megalopolis as well as the suitability of their construction. In order to attain this, this study looked at the present status of these small areas of national/public lands by utilizing a national land, city land list (lot number), land registration map and satellite image of Busan Megalopolis, and evaluating their suitability as parks through GIS analysis and classification. As a result, these small areas of lands with the potential to be turned into parks include 516 spots($375,934m^2$). Geographically, 39% of these areas are located on flat land and are the most scattered. 260 places met the requirements for optimal placement for conversion, while convenience included 305 places, and availability 267 places. The most optimal of the places meeting such standards include 61 spots. The characteristics of these areas of national/public lands include being below $500m^2$, with flatlands and open areas above a 5' grade occupy the highest ratio, accounting for 25.4% of the land studied. These results have offered a methodology for a GIS DB, which can visualize the data for a positive utilization be yond the simple level of the maintenance/preservation of national/public lands and provide basic data for the utilization and management of these types of areas in the future.

      • KCI등재

        벼 등숙기 벼멸구 피해가 수량 및 품질에 미치는 영향

        이종희,여운상,곽도연,김준환,송유천,김춘송,신문식,Lee, Jong-Hee,Yeo, Un-Sang,Kwak, Do-Yeon,Kim, Joon-Hwan,Song, Yu-Cheon,Kim, Choon-Song,Shin, Moon-Sik 한국작물학회 2006 Korean journal of crop science Vol.51 No.suppl1

        화영벼와 일품벼를 이용하여 벼멸구에 피해에 따른 농업적 특성, 수량 및 품질에 미치는 영향을 검토한 결과는 다음과 같다. 1. 벼멸구 피해지에서 간장 수장 및 수당립수는 차이가 없었으나, 등숙율 및 쌀수량은 무피해구에 비해 감소되어 출수기 이후의 피해가 큰 것으로 나타났다. 2. 현미의 외관품질 분석 결과 벼멸구 피해지의 정상립 비율은 감소하였고, 미숙립, 피해립 및 사미의 발생은 증가되었다. 3. 벼멸구 피해지의 쌀의 이화학적 특성 분석 결과 아밀로스 함량은 차이가 없었으나, 단백질 함량은 높았다. 최고 점도는 낮고 치반점도는 높았으며 취반시 호화특성이 불량한 것으로 나타났으며, 식미치는 낮아졌다. This study was carried out to investigate the change yield and grain quality in rice caused by damages of brown planthopper (Bph) on major agronomic traits at the ripening stage. A major agronomic traits such as culm length, panicle length, number of panicle and number of grain per panicles was no-significant difference compared hopperburn area (HBA) and moderately damaged area (MDA) by brown planthopper with non-damaged area (NDA). but, the ripeing ratio and yield in HBA and MDA was significantly decreased. The perfect rice of brown rice in HBA and MDA was also lowered than the NDA and the immatured grain among imperfect rice in damaged area by BPH was significantly increased than in the NDA. Among the traits related with palatability of cooked rice, the amylose content was not affected by damage of brown planthopper, whereas, the protein content was significantly increased in the HBA and MDA. additionally, Peak viscosity in HBA and MDA is lower than the NDA, and setback was increased. In most cases, there was negative on yield and grain quality by the damage of brown planthopper at the ripening stage. Thus, the rice product harvested in damaged area should be separated with that in non damaged area for grain market quality of milled rice.

      • 벼줄무늬잎마름바이러스(Rice stripe virus) 밀양-DFC isolate의 전게놈 분석

        김상민 ( Sang Min Kim ),이종희 ( Jong Hee Lee ),여운상 ( Un Sang Yeo ),이봉춘 ( Bong Choon Lee ),강미형 ( Mihyung Kang ) 전북대학교 농업과학기술연구소 2015 농업생명과학연구 Vol.46 No.2

        We report the full genome sequence of Rice stripe virus isolate Miryang-DFC, used for the RSV-resistance bioassay of rice at the Department of Functional Crop, NICS, 2010. The genome size of RSV isolate Miryang-DFC RNA1 is 8969nt, RNA2 is 3514nt, RNA3 is 2473nt, RNA4 is 2157nt. The complete genome sequence of RSV isolate Miryang-DFC with the RSV-resistance bioassay data will help finding genes related to the pathogenicity of the rice stripe virus.

      • KCI등재
      • KCI등재

        인디카 품종 IR72유래 흰잎마름병 저항성 및 노화촉진 계통 ‘MY298BB’

        이종희(Jong-Hee Lee),여운상(Un-Sang Yeo),김태헌(Tae-Heon Kim),신동진(Dongjin Shin),강주원(Ju-Won Kang),이샛별(Sais-Beul Lee),이지윤(Ji-Yoon Lee),조준현(Jun-Hyeon Cho),박동수(Dong-Soo Park),송유천(You-Chun Song) 한국육종학회 2020 한국육종학회지 Vol.52 No.1

        Limitation of genetic diversity in japonica rice breeding populations is often identified as a potential obstacle for the development of high yielding cultivars. The use of diverse germplasm in rice breeding has been suggested as one way of combating this problem. This study was conducted to improve the genetic diversity for rice, by developing an advanced backcross population derived from a backcross ‘Junam’ as recurrent parent and ‘IR72’ as a donor parent. Among them, we selected a promising line ‘YR24438-B-B-B-B-132’ containing bacterial blight resistance gene Xa4. Testing in the replicated yield trial in 2009, the ‘YR24438-B-B-B-B-132’ line was selected, and it was designated as ‘Milyang298’. The local adaptability test of ‘Milyang298’ was carried out at three locations from 2014 to 2016 and it was named ‘MY298BB’. The average culm length in the replicated yield trials was 87 cm, which is 15 cm taller than recurrent parent ‘Junam’. Number of spikelets per panicle was significantly lower than in ‘Junam’ but the number of tillers per hill was higher. This variety is resistant to bacterial blight race K1, K2, K3, and K3a.However ‘MY298BB’ showed early leaf senescence at the mature stage and the chlorophyll content of ‘MY298BB’ was significantly lower than that of the recurrent parent ‘Junam’. Moreover the grain filling ratio and yield were significantly lower in ‘MY298BB’ than those of recurrent parent ‘Junam’. Therefore, understanding the leaf senescence mechanism would be useful for improving yield potential in rice.

      • KCI등재후보

        중생 고품질 내병 내도복 다수성 벼 ‘다보(多寶)’

        박노봉(No-Bong Park),여운상(Un-Sang Yeo),김정일(Jeong-Il Kim),이지윤(Ji-Yoon Lee),권오덕(Oh-Deog Kwon),박동수(Dong-Soo Park),장재기(Jae-Ki Chang),이종희(Jong-Hee Lee),조준현(Jun-Hyun Cho),송유천(You-Cheon Song),오성환(Seong-Hwan Oh) 한국육종학회 2015 한국육종학회지 Vol.47 No.2

        A rice variety ‘Dabo‘ is a japonica rice (Oryza sativa L.) with good eating quality, lodging tolerance, and resistance to rice stripe virus (RSV) and blight bacterial disease(BB). It is developed by the rice breeding team of Yeongdeog Substation, National Institute Crop Science, RDA in 2012. This variety derived from a cross between ‘Yeongdeog31’ with good plant type and ‘Milyang165’ with good eating quality conducted in 2001/2002 winter season. A promising line, YR23160-31-2-1-5-B-3, selected by pedigree breeding method was designated as the name of ‘Yeongdeog53’ in 2009. After the local adaptability test was carried out at seven locations from 2010 to 2012, ‘Yeongdeog53’ was released as the name of ‘Dabo’ in 2012. ‘Dabo’ is short culm length as 69 cm and medium-growth duration. This variety is resistant to races, K1, K2, and K3 of bacterial blight and stripe virus and moderately resistant to leaf blast disease. ‘Dabo’ has translucent and clear milled rice kernel without white core and belly rice, and good eating quality as a result of panel test. The yield potential of ‘Dabo’ in milled rice is about 5.90 MT/ha at ordinary fertilizer level of local adaptability test. This cultivar would be adaptable to south plain, east-south costal area, and south mid-mountainous area.

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