• Title/Summary/Keyword: seed testing

Search Result 133, Processing Time 0.026 seconds

Testing for Detection of Xanthomonas campestris pv. campestris in Crucifer Seeds and Seed Disinfection (십자화과 채소종자의 검은빛썩음병 감염검정 및 종자소독)

  • Kim Byung Soo
    • Korean Journal Plant Pathology
    • /
    • v.2 no.2
    • /
    • pp.96-101
    • /
    • 1986
  • Total 29 commercial crucifer seed lots were tested for seed transmission of Xanthomonas campestris pv. campestris by seed washing liquid plating assay. One imported cabbage seed lot was found to carry Xanthomonas campestris pv. campestris. Several methods and chemicals for eradication of Xanthomonas campestris pv. campestris in and on the cabbage seed were tested for effectiveness. Soaking cabbage seed in $3\3%$ hydrogen peroxide solution for 30 minutes effectively eradicated Xanthomonas campestris pv. campestris in a naturally infested seed lot. In a field survey, black rot turned out to be an important disease in cabbage in Korea.

  • PDF

Development of On-line Sorting System for Detection of Infected Seed Potatoes Using Visible Near-Infrared Transmittance Spectral Technique (가시광 및 근적외선 투과분광법을 이용한 감염 씨감자 온라인 선별시스템 개발)

  • Kim, Dae Yong;Mo, Changyeun;Kang, Jun-Soon;Cho, Byoung-Kwan
    • Journal of the Korean Society for Nondestructive Testing
    • /
    • v.35 no.1
    • /
    • pp.1-11
    • /
    • 2015
  • In this study, an online seed potato sorting system using a visible and near infrared (40 1100 nm) transmittance spectral technique and statistical model was evaluated for the nondestructive determination of infected and sound seed potatoes. Seed potatoes that had been artificially infected with Pectobacterium atrosepticum, which is known to cause a soil borne disease infection, were prepared for the experiments. After acquiring transmittance spectra from sound and infected seed potatoes, a determination algorithm for detecting infected seed potatoes was developed using the partial least square discriminant analysis method. The coefficient of determination($R^2_p$) of the prediction model was 0.943, and the classification accuracy was above 99% (n = 80) for discriminating diseased seed potatoes from sound ones. This online sorting system has good potential for developing a technique to detect agricultural products that are infected and contaminated by pathogens.

On the SEED Validation System (SEED 구현 적합성 검증 시스템에 관한 연구)

  • Kim, Yeok;Jung, Chang-Ho;Jang, Yoon-Seok; Lee, Sang-Jin;Lee, Sung-Jae
    • Journal of the Korea Institute of Information Security & Cryptology
    • /
    • v.13 no.1
    • /
    • pp.69-85
    • /
    • 2003
  • In this paper, we discuss a validation test for cryptographic algorithms. The cryptographic algorithms decide on the security and the confidence of a security system protecting sensitive information. So. the implementation of cryptographic algorithms is very critical of the system. The validation lest specifies the procedures involved in validating implementations of the cryptographic standards and provides conformance testing for components or procedures of the algorithm. We propose a SEED Validation System(SVS) to verify that the implementation correctly performs the SEED algorithm. The SVS is composed of two types of validation tests, the Known Answer test and the Monte Carlo test. The System generates the testing data for the Known Answer tests and the random data for the Monte Carlo tests. This system can be used to validate and certify the cryptographic product.

A Comparison Analysis on the Sales Price of Apartments according to G-SEED by Using T-test (T-test분석을 통한 녹색건축인증 유무에 따른 공동주택의 매매가격 비교 분석)

  • Jeon, Sang-Sub;Son, Ki-Young;Lee, Joo-Hyeong;Oh, Jun-Seok;Son, Seung-Hyun
    • Proceedings of the Korean Institute of Building Construction Conference
    • /
    • 2019.11a
    • /
    • pp.207-208
    • /
    • 2019
  • Currently, as the public interest for environmental issues has grown rapidly, the needs for G-SEED have also increased. However, as investment according to eco-friendly elements is inevitable to receive G-SEED certification, it is necessary to find out whether or not the sales price of apartments have increased compared to investment costs. Therefore, the objective of this study is to analyze the sales price of apartments according to G-SEED by using T-test. To achieve the objective, First, variables affecting on the sales price of apartments are selected. Second, the data are collected by using GIS(Geographic Information System). Third, after testing the normality, a comparison analysis is conducted on the sales price between G-SEED certified and non-certified apartments by using T-test. As a result, it is concluded that G-SEED certified apartments are more expensive than non-certified apartments. In the future, these findings can be utilized to develop of apartments price calculation model based on the G-SEED.

  • PDF

The Effect of Seed-borne Mycoflora from Sorghum and Foxtail Millet Seeds on Germination and Disease Transmission

  • Yago, Jonar I.;Roh, Jae-Hwan;Bae, Soon-Do;Yoon, Young-Nam;Kim, Hyun-Ju;Nam, Min-Hee
    • Mycobiology
    • /
    • v.39 no.3
    • /
    • pp.206-218
    • /
    • 2011
  • The seed-borne mycoflora of sorghum and foxtail millet collected from different growing areas in South Korea were isolated and taxonomically identified using dry inspection, standard blotter and the agar plate method. We investigated the in vitro and in vitro germination rates of disinfected and non-disinfected seeds of sorghum and foxtail millet using sterilized and unsterilized soil. The percent recovery of seed-borne mycoflora from the seed components of sorghum and foxtail millet seeds was determined and an infection experiment using the dominant species was evaluated for seedling emergence and mortality. A higher number of seed-borne fungi was observed in sorghum compared to that of foxtail millet. Eighteen fungal genera with 34 fungal species were identified from the seeds of sorghum and 13 genera with 22 species were identified from the seeds of foxtail millet. Five dominant species such as Alternaria alternata, Aspergillus flavus, Curvularia lunata, Fusarium moniliforme and Phoma sp. were recorded as seed-borne mycoflora in sorghum and 4 dominant species (Alternaria alternata, Aspergillus flavus, Curvularia lunata, Fusarium moniliforme) were observed in foxtail millet. The in vitro and in vitro germination rates were higher using disinfected seeds and sterilized soil. More seed-borne fungi were recovered from the pericarp compared to the endosperm and seed embryo. The percent recovery of seed-borne fungi ranged from 2.22% to 60.0%, and Alternaria alternata, Curvularia lunata and 4 species of Fusarium were isolated from the endosperm and embryo of sorghum and foxtail millet. Inoculation of the dominant seed-borne fungi showed considerable mortality of seedlings. All the transmitted seed-borne fungi might well be a primary source of infection of sorghum and foxtail millet crops.

Efficacy of Fluazinam and Iprodione+Propineb in the Suppression of Diaporthe phaseolorum, Colletotrichum truncatum and Cercospora kikuchii, the Causal Agents of Seed Decay in Soybean

  • Oh, Jeung-Haing;Kang, Nag-Won
    • The Plant Pathology Journal
    • /
    • v.18 no.4
    • /
    • pp.216-220
    • /
    • 2002
  • Seed decay of soybean caused by Diaporthe phaseolorum, Colletotrichum truncatum and Cercospora kikuchii is a serious disease when soybean is harvested under warm and wet weather conditions. Benomyl has been used for controlling the disease, however, benomyl application may be limited due to common occurrence of resistance. The efficacy of 21 fungicides against the pathogens was evaluated in vitro. Among the fungicides tested, benomyl, carbendazim, fluazinam, iprodione+propineb, thiophanate-methyl, and triflumizole were found effective and were evaluated for their ability to control the seed pathogens. Fluazinam completely inhibited mycelial growth at a concentration of 100 $\mu\textrm{g}$/$\textrm{m}{\ell}$ for D. phaseolorum; and at a concentration of 500 $\mu\textrm{g}$/$\textrm{m}{\ell}$ for C. truncatum and C. kikuchii. $EC_90$ values of fluazinam were similar to that of benomyl. Because fluazinam, iprodione+propineb, and triflumizole were found effective against the seed pathogens, these were subjected for field-testing. Suppression of pod and seed infection by fluazinam and iprodione+propineb was as high as that of benomyl without any reduction in agronomic characters of soybean. This study shows that fluazinam and iprodione+propineb may be used in combination with benomyl to control seed pathogens, manage resistance, and ensure production of high quality soybean seeds.

Quality characteristics of Sulgidduk by the Addition of Apricot Seed Powder (살구씨가루를 첨가한 설기떡의 품질특성)

  • Choi, Woo-Seoung;Choi, Mi-Kyung;Chae, Kyung-Yeon
    • Korean journal of food and cookery science
    • /
    • v.27 no.6
    • /
    • pp.653-659
    • /
    • 2011
  • The aim of this study was to determine the optimum amount of apricot seed powder to add to rice flour in oder to prepare Sulgidduk (traditional rice cakes). As the apricot seed powder level of the Sulgidduk increased, the moisture contents of the samples decreased (40.30~43.46%), and the color of L- and a-values also decreased, while the b-value increased. According to instrumental test results, hardness, springiness, gumminess, chewiness and adhesiveness were all highest in the 0% apricot seed powder sample. The cohesiveness of samples did not show a conclusive relationship with the level of apricot seed powder present. In sensory evaluation results, the 3% and 6% samples received high overall acceptability scores. In conclusion, based on both sensory and instrumental testing, the optimal Sulgidduk mixture consisted of 3~6% apricot seed powder added to rice flour.

Design and Implementation of Web-based Software Engineering Tool for Robot (웹 기반 로봇 소프트웨어 공학 도구 설계 및 구현)

  • Hong, Chang-Ho;Park, Hong-Seong
    • Journal of Institute of Control, Robotics and Systems
    • /
    • v.17 no.9
    • /
    • pp.908-915
    • /
    • 2011
  • As the requirement of user for robot functionality, the function and interface for controlling the robot system is more sophisticated and complicated. Accordingly development process of robot is more complicated and it takes much longer time to develop a robot system. Software development using project management tool is more important in software engineering because of the complexity of software, especially robot system. This paper proposes SEED (Software Engineering Equipment for Development), which is a web-based and integrated software engineering tool to provide independent tools for robot software development. SEED includes the document management tool, the software configuration management tool, the software testing tool on developing robot software and provide a functionality of collaborated and remote development due to WEB-based operations.

Evaluation of Environmental Toxicities for Priority Water Pollutants in a Small Watershed by Bioassays - Comparision between Lettuce Seed Germination Test and Microtox Bioassay - (생물학적 검정법을 이용한 소규모 수계내 수질 오염물질의 환경독성 평가 -상추씨 발아시험과 Microtox 시험 비교-)

  • 이지나;황인영
    • Environmental Analysis Health and Toxicology
    • /
    • v.14 no.4
    • /
    • pp.135-144
    • /
    • 1999
  • Environmental toxicities of priority water pollutants were evaluated by two selected bioassays, Lettuce seed germination/elongation test and Microtox acute toxicity test. Toxic chemicals (heavy metals, polycyclic aromatic hydrocarbons, and phenolic compounds) inhibited the germination rate and root elongation of Lettuce seed, as well as the bioluminescence of Microtox bacteria. When test biota were exposed to target chemicals, the sensitivity of Lettuce bioassay was relatively lower than that of Microtox bioassay. However, Lettuce bioassay may be a good candidate for prescreening the environmental toxicities of priority water pollutants, since the testing method with Lettuce seed was relatively easier and more economic than with Microtox bacteria. Toxicity tests were conducted to compare the validity and sensitivity of both bioassays for sediment from a small stream passed through urban area as well as leachate from a municipal solid waste landfill. From experimental results, we found that Lettuce test and Microtox test are compensated each other as a battery of bioassay for evaluating the environmental toxicities of field samples obtained from a small stream contaminated by pollutants.

  • PDF

Studies on the Seed's Germinability test by the T.T.C. testing method. (T.T.C 검정방법에 의한 종자의 발아력검정에 관한 연구)

  • 전우방
    • Asian Journal of Turfgrass Science
    • /
    • v.2 no.1
    • /
    • pp.70-77
    • /
    • 1988
  • In order to determine and to reduce the differences between biochemical test method for the seed viability with T.T.C. (2, 3, 5. Triphenyl tetrazolium Chloride) reagent and germinator method, the topographical diagram of red colored formazan was carried out in 15-16 parts differences. From this resulted information, the classification of the typical staining reaction given for 3 species were derived into 3-4 parts for the germinable in normal seedling, the same as the following results. 1. Corn (Gram inaceae) * Entier embryo stained in bright red color. * Both extremities of scutellum unstained * Both extremities of scuttlium, coleorhiza and non-critial portions of radicle unstained. 2. Soybean (Leguminosae) *Seed completely stained in red color. *Minor unstained areas on cotyledons. *Extreme tip of radicle unstained; minor unstained areas on cotyledons 3. Radish (Cruciferae) *Seed completely stained. *Minor unstained areas on cotyledons. *Outer cotyledon mostly unstained: inner cotyledon completely stained Extreme tip of radicle unstained: large portion of outer cotyledon unstained.

  • PDF