• Title/Summary/Keyword: National development

Search Result 50,195, Processing Time 0.075 seconds

Growth Characteristics of Soybean Cultivar According to the Temperature Rise

  • Pyeong Shin;Yun-Ho Lee;Hyun Soo Jang;Dea-Wook Kim;Hee-Woo Lee;Jin-Hee Ryu;Jong-Tak Yun
    • Proceedings of the Korean Society of Crop Science Conference
    • /
    • 2022.10a
    • /
    • pp.149-149
    • /
    • 2022

  • As the average temperature rises due to climate change, damage to caused by rising temperatures is spreading all over the world. If soybeans are exposed to high temperature during the reproductive stage, pod setting rate and seed weight is reduced, therefore, various studies are needed to prevent crop damage due to high temperature. This study is to research the effect of high temperature on yield decrease during the grow stage of soybean.

  • PDF

Reliability Assessment of Temperature and Precipitation Seasonal Probability in Current Climate Prediction Systems (현 기후예측시스템에서의 기온과 강수 계절 확률 예측 신뢰도 평가)

  • Hyun, Yu-Kyung;Park, Jinkyung;Lee, Johan;Lim, Somin;Heo, Sol-Ip;Ham, Hyunjun;Lee, Sang-Min;Ji, Hee-Sook;Kim, Yoonjae
    • Atmosphere
    • /
    • v.30 no.2
    • /
    • pp.141-154
    • /
    • 2020

  • Seasonal forecast is growing in demand, as it provides valuable information for decision making and potential to reduce impact on weather events. This study examines how operational climate prediction systems can be reliable, producing the probability forecast in seasonal scale. A reliability diagram was used, which is a tool for the reliability by comparing probabilities with the corresponding observed frequency. It is proposed for a method grading scales of 1-5 based on the reliability diagram to quantify the reliability. Probabilities are derived from ensemble members using hindcast data. The analysis is focused on skill for 2 m temperature and precipitation from climate prediction systems in KMA, UKMO, and ECMWF, NCEP and JMA. Five categorizations are found depending on variables, seasons and regions. The probability forecast for 2 m temperature can be relied on while that for precipitation is reliable only in few regions. The probabilistic skill in KMA and UKMO is comparable with ECMWF, and the reliabilities tend to increase as the ensemble size and hindcast period increasing.

  • https://doi.org/10.14191/Atmos.2020.30.2.141 인용 PDF KSCI

Expression of BrD1, a Plant Defensin from Brassica rapa, Confers Resistance against Brown Planthopper (Nilaparvata lugens) in Transgenic Rices

  • Choi, Man-Soo;Kim, Yul-Ho;Park, Hyang-Mi;Seo, Bo-Yoon;Jung, Jin-Kyo;Kim, Sun-Tae;Kim, Min-Chul;Shin, Dong-Bum;Yun, Hong-Tai;Choi, Im-Soo;Kim, Chung-Kon;Lee, Jang-Yong
    • Molecules and Cells
    • /
    • v.28 no.2
    • /
    • pp.131-137
    • /
    • 2009

  • Plant defensins are small (5-10 kDa) basic peptides thought to be an important component of the defense pathway against fungal and/or bacterial pathogens. To understand the role of plant defensins in protecting plants against the brown planthopper, a type of insect herbivore, we isolated the Brassica rapa Defensin 1 (BrD1) gene and introduced it into rice (Oryza sativa L.) to produce stable transgenic plants. The BrD1 protein is homologous to other plant defensins and contains both an N-terminal endoplasmic reticulum signal sequence and a defensin domain, which are highly conserved in all plant defensins. Based on a phylogenetic analysis of the defensin domain of various plant defensins, we established that BrD1 belongs to a distinct subgroup of plant defensins. Relative to the wild type, transgenic rices expressing BrD1 exhibit strong resistance to brown planthopper nymphs and female adults. These results suggest that BrD1 exhibits insecticidal activity, and might be useful for developing cereal crop plants resistant to sap-sucking insects, such as the brown planthopper.

  • https://doi.org/10.1007/s10059-009-0117-9 인용 KSCI