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가나의 기후변화 시나리오 상세화 및 미래기후 변동 평가
최순군,Eric Owusu Danquah,조재필,엽소진,김민경 한국국제농업개발학회 2022 한국국제농업개발학회 학술대회 Vol.2022 No.09
기후변화 시나리오는 기후변화로 인한 미래 영향을 평가하여 피해를 선제적으로 최소화하기 위한 기후변화 대응 및 적응정책 수립을 위한 과학적인 근거로 활용 되어 왔다. IPCC 6차 평가보고서(AR6)에 사용된 SSPs(Shared Socioeconomic Pathways, 공통사회경제경로) 시나리오는 기존 RCP(Representative Concentration Pathways, 대표농도경로) 시나리오에 사용된 복사강제력 개념과 함께 미래의 완화 와 적응 노력에 따른 5개의 사회경제 시나리오를 추가로 고려하였다. 가나는 국가 발전용량의 54%를 수력발전에 의존하고 있어 기후변화에 따른 강수량의 감소로 전력 부족을 경험하고 있다. 또한 강우특성의 변화로 인해 주요 작물인 카사바, 옥수수, 코코아의 생산량이 감소할 것으로 예측된다. 한편, IPCC 6차 보고서의 기 준 시나리오로 채택된 SSPs 시나리오는 5차 보고서에서 채택된 RCPs 시나리오에 비해 대기 중 CO2 농도 전망을 비관적으로 평가하고 있다. Business as usual(BAU) 시나리오(RCP8.5, SSP5-8.5)에 따르면 2050년대 CO2 농도는 RCPs 시나 리오의 경우 541 ppm, SSPs 시나리오는 565 ppm으로 SSPs 시나리오가 RCPs 시나 리오에 비해 대기중 CO2 농도 증가 속도가 빠른 것으로 전망하고 있다. 따라서 본 연구에서는 기후변화 시나리오의 통계적 상세화 방법인 Simple Quantile Mapping(SQM)을 사용하여 Coupled Model Intercomparison Project phase 6(CMIP6) 18개 General Circulation Model(GCM)을 활용하여 가나지역의 미래기후 변동과 불 확실성을 평가하였다.
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Moses Adeolu Adebayo,Abebe Menkir,Malaku Gedil,Essie Blay,Vernon Gracen,Eric Danquah,Ladejobi Funmilayo 한국작물학회 2015 Journal of crop science and biotechnology Vol.18 No.3
Knowledge about the genetic diversity within a germplasm allows for a more effective and efficient use of resources for crop improvement programs. Diversity assessment of 48 tropical drought-tolerant maize inbreds, 24 each from CIMMYT and IITA, was carried out with microsatellite markers to determine the genetic divergence between the two groups of maize inbred lines. Eighty-one polymorphic SSR markers were used for the assessment. Results showed that the average number of alleles per locus was 3.7. The mean polymorphic information content (PIC) was 0.51 whereas the average modified Roger’s genetic distance (MRD) was 0.49. The mean genetic distance estimates between the CIMMYT and IITA lines were higher than the mean genetic distance among IITA lines or among CIMMYT lines. The average linkage cluster analysis separated the lines into two broad groups along institutional lines. The observed sub-groups within each main group were reflections of the relationships of the lines based on pedigree records. The FST value of 19.5% reflects a high level of genetic differentiation between the two groups of lines. The results highlighted the presence of appreciable genetic divergence between CIMMYT and IITA lines that can be exploited for superior hybrid maize development.
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Diatta Cyril,Tovignan Thierry Klanvi,Akata Eyanawa Atchozou,Ifie Beatrice Elohor,Sarr Mame P.,Bassene César,Aidara Ousmane,Ndione Pierre Alfred,Gackou Malick,Manga Anicet Georges Bruno,Danquah Eric Yi 한국작물학회 2022 Journal of crop science and biotechnology Vol.25 No.2
Increasing sorghum production per unit area in the farmer’s feld by developing high yielding tannin-free and grain mold tolerant varieties in Senegal is the goal of the present study. Line×tester mating design was used to cross eleven tannin-free non-photoperiodic male fertile sorghum varieties with two male-sterile A-lines to produce 22 F1 hybrids. These hybrids along with the thirteen parents and one grain mold resistant hybrid check were evaluated under natural grain mold infestation in two contrasted sites using a 6×6 lattice design with three replications. Results on combining ability suggested that additive gene actions were important in the control of grain mold resistance while non-additive gene actions were preponderant in the inheritance of grain yield. The parental lines F2-20, Macia, Faourou, and Dorado were the best general combiner for grain mold resistance. Of these, Dorado was identifed as the best combiner for yield and yield components. Additionally, the hybrid CE310-31A×Sureño was identifed as the best hybrids combination for yield, yield components and grain mold resistance. Furthermore, the hybrid crosses CE310-31A×F2-20, CE310-31A×Sureño and AVG-1×Dorado showed the best mid-parent heterosis for grain yield and resistance to grain mold. Moreover, based on their combining ability and heterosis, seven hybrids were identifed for their resistance to grain mold and high yielding. These hybrids could be tested in multilocation trials for a subsequent release.
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Bosomtwe Augustine,Jinu Eo,Myung-Hyun Kim,Min-Kyeong Kim,Soon-Kun Choi,So-Jin Yeob,Jeong-Hwan Bang,Owusu Danquah Eric 한국환경생물학회 2021 환경생물 : 환경생물학회지 Vol.39 No.4
Pantala flavescens is a dominant Odonata species in the rice fields in Korea. To determine the effects of different temperatures on its larval growth and emergence, field and laboratory experiments were conducted. Larval growth was also monitored in mono-cropping and double-cropping rice fields. The growth of larvae was monitored every week by measuring the head width. In the field experiment, no difference was found in larval growth and emergence between the control temperature and +1.9°C of the control temperature. The larval growth was greater at 23°C than at 20°C laboratory temperatures, and no emergence was recorded at either temperature after eight weeks of monitoring. There was a quadratic relationship between larval growth and temperature in an incubator at five temperature regimes of 15, 20, 25, 30, and 35°C. Midseason water drainage caused the extinction of the existing individuals and newly hatched larvae dominated after re-watering in the rice fields. Larval size was greater in double-cropping fields than in mono-cropping fields in late July but the tendency was reversed in early August. The results of this study suggest that temperature warming will directly promote the larval growth of P. flavescens and indirectly influence seasonal growth via changes in water management in rice fields.
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APEX-paddy 모델을 활용한 SSPs 시나리오에 따른 논 필요수량 변동 평가
최순군 ( Choi Soon-kun ),조재필 ( Cho Jaepil ),정재학 ( Jeong Jaehak ),김민경 ( Kim Min-kyeong ),엽소진 ( Yeob So-jin ),조세라 ( Jo Sera ),오수당콰에릭 ( Owusu Danquah Eric ),방정환 ( Bang Jeong Hwan ) 한국농공학회 2021 한국농공학회논문집 Vol.63 No.6
Global warming due to climate change is expected to significantly affect the hydrological cycle of agriculture. Therefore, in order to predict the magnitude of climate impact on agricultural water resources in the future, it is necessary to estimate the water demand for irrigation as the climate change. This study aimed at evaluating the future changes in water demand for irrigation under two Shared Socioeconomic Pathways (SSPs) (SSP2-4.5 and SSP5-8.5) scenarios for paddy rice in Gimje, South Korea. The APEX-Paddy model developed for the simulation of paddy environment was used. The model was calibrated and validated using the H2O flux observation data by the eddy covariance system installed at the field. Sixteen General Circulation Models (GCMs) collected from the Climate Model Intercomparison Project phase 6 (CMIP6) and downscaled using Simple Quantile Mapping (SQM) were used. The future climate data obtained were subjected to APEX-Paddy model simulation to evaluate the future water demand for irrigation at the paddy field. Changes in water demand for irrigation were evaluated for Near-future-NF (2011-2040), Mid-future-MF (2041-2070), and Far-future-FF (2071-2100) by comparing with historical data (1981-2010). The result revealed that, water demand for irrigation would increase by 2.3%, 4.8%, and 7.5% for NF, MF and FF respectively under SSP2-4.5 as compared to the historical demand. Under SSP5-8.5, the water demand for irrigation will worsen by 1.6%, 5.7%, 9.7%, for NF, MF and FF respectively. The increasing water demand for irrigating paddy field into the future is due to increasing evapotranspiration resulting from rising daily mean temperatures and solar radiation under the changing climate.
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