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Mapping of the Reduced Culm Number Trait in Rice (Oryza sativa L.) rcn10(t) Mutant
Un-Sang Yeo,Jong-Hee Lee,Choon-Song Kim,Meong-Gi Jeon,Tae-Yong Oh,Chang-Deok Han,Mun-Sik Shin,Byeong-Geun Oh 한국육종학회 2008 한국육종학회지 Vol.40 No.3
In rice, tillering is an important trait determining yield. To study tillering at the agricultural and molecular aspects, we have examined a spontaneous rice mutant that showed reduction in the number of culms. The mutant was derived from a F6 line of the cross of Junambyeo*4 / IR72. It could produce, on average, 4 tillers per hill in the paddy field while wild-type plants usually have 15. Except the reduced culm numbers, they also show pale green phenotypes. The phenotypes of this mutant were co-segregated as the monogenic Mendelian ratio (χ2 = 0.002, p = 0.969). In order to locate a gene responsible for the rcn phenotype, the mutant with the japonica genetic background was crossed with Milyang21 of the indica background. Bulked segregant analysis was used for rapid determination of chromosomal location. Three SSR markers (RM551, RM8213, and RM16467) on chromosome 4 were genetically associated with the mutant phenotype. Each of the 217 F2 plants was genotyped with simple sequence length polymorphisms. The data showed that RM16572 on chromosome 4 was the closest marker that showed perfect co-segregation among the F2 population. We suggest the new rcn gene studied here name as rcn10t because there was no report which exhibit a rcn phenotype with a pleiotropic effect of pale green (chlorophyll deficiency), and mapped at same position on chromosome 4.
규산질계 분말형 도포 방수재(KS F 4918) 시험 평가방법 개선방안 연구
김명지 ( Kim Meong-ji ),주희정 ( Ju Hee-jung ),김수연 ( Kim Soo-yeon ),임남기 ( Lim Nam-gi ),오상근 ( Oh Sang-keun ) 한국건축시공학회 2019 한국건축시공학회 학술발표대회 논문집 Vol.19 No.1
The purpose of this study is to apply a test method that evaluates durability under wet environment rather than the strength of the material itself to reflect the environment of use and field conditions of silic acid powder applied waterproof material, and to prepare a foundation data for differentiated performance criteria through test verification.
공공데이터를 활용한 PaaS 기반 클라우드 정밀농업관리 시스템 설계
양광호(Yang Kwang Ho),홍의기(Hong Ui Gi),박시은(Park Si Eun),여현(Yoe Hyun),이명훈(Lee Meong Hun) 한국통신학회 2021 한국통신학회 학술대회논문집 Vol.2021 No.6
본 논문은 품목별 관리 매뉴얼 공공 데이터를 활용하여 농가의 스마트팜 시설 운영을 체계화하고, 농업관리의 지능화 및 자원절약 서비스 모델을 개발하며, PaaS 기반 클라우드 농업 관리 서비스 패키징 및 유료화 모델을 발굴하는 것을 목적으로 한다. 품목별 관리 매뉴얼과 인공지능을 활용한 영농 관리 기능의 고도화 및 표준화를 추진하고, 사용료 기반 서비스 패키징을 통해 가격 장벽을 해소함으로써 스마트팜에 대한 농가 접근성을 높여 시장 확산 및 수익모델 다변화 기반을 마련할 수 있다.
황시현,서기영,김철규,김명기,지성대,정영득,Hwang, Si-Hyun,Seo, Gi-Yeong,Kim, Chul-Kyu,Kim, Meong-Gi,Ji, Seong-Dae,Jung, Yeong-Deuk 한국금형공학회 2008 한국금형공학회지 Vol.2 No.2
Injection molding is representative process of plastic production. Most of numerical analyses for injection molding have been based on the Hele Shaw's approximation: two-dimensional flow analysis. The present work covers numerical analyses of injection molding using three-dimensional solid elements. The accuracy of the analysis results has been verified through some numerical examples in comparison with the various conditions. In this study, moldflow software was used to analyze the cooling analysis. The results of cooling analysis and testing catapult were compared for plastic products.