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학술포스터 목록
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기관 |
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318
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2024
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작물재배생리과 이희우
벼 최소경운이앙은 이앙 전 경운, 로터리와 써레질을 생략하 고 모가 심어질 부분만 최소한 로터리치면서 동시에 모를 심 어 재배하는 기술로 노동력 절감이 가능한 벼 재배기술이다. 단점으로는 이앙기의 부하를 줄이기 위해 이앙전에 2주이상 담수로 토양의 경직도를 낮추어야 하고, 무경운에 따른 둑새 풀 등 잡초발생량이 많아지면 이앙시 뜬모발생 및 환원장해를 일으켜 결주율을 높이고 초기생육이 늦추게 된다. 이에 비선 택성 제초제 처리시기 및 횟수에 따른 잡초생육량의 변화와 이에 따른 벼 초기생육을 비교하고자 한다.
" target="_blank" title="최소경운이앙에서 이앙전 비선택성 제초제 처리 횟수에 따른 잡초발생 양상 새창에서 열림">
최소경운이앙에서 이앙전 비선택성 제초제 처리 횟수에 따른 잡초발생 양상
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317
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2023
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작물재배생리과 권동원
농업분야에서 작물의 수량과 관련된 초장, 엽면적, 건물중 등의 생육지표에 대한 계측조사는 필수적인 작업이지만 시간과 노동력이 많이 요구되며 특정 지표는 파괴적인 방 법으로만 측정이 가능하다. 최근 디지털 기술의 발달로 영상을 이용하여 작물의 생육을 측정하는 연구가 활발히 이루어지고 있다. 영상을 이용한 방법은 짧은 시간에 대량 의 정보 수집이 가능하며 접촉하지 않고, 비파괴적으로 작물의 생육을 측정할 수 있다. 레이저 스캐너, 깊이카메라 등의 장비로 수집가능한 3차원 영상은 특정한 마커 없이 대상의 크기나 입체적인 구조를 파악할 수 있어 광학 정보와 함께 형태 정보를 분석할 수 있다. 본 연구는 깊이카메라로 수집한 콩 군락의 3차원 영상 정보를 이용하여 군락 의 높이와 RGB(Red-Blue-Green) 색상기반의 식생지수를 계산하고 비교, 분석하였다." target="_blank" title="3차원 영상을 이용한 콩 군락 높이와 식생지수 측정 방법 연구 새창에서 열림">
3차원 영상을 이용한 콩 군락 높이와 식생지수 측정 방법 연구
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316
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2023
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밀연구팀 최창현
국내 밀 재배환경은 밀 주요 생산국에 비해 월동기가 길고 춥다. 국산밀 품종 육성을 위해서는 추위에 잘 견딜 수 있는 육종재료를 선발하는 것이 매우 중요하다. 국립식량과학원 밀 육종 시스템은 모 ·부 본 을 교배한 후 확보한 F2 집 단 을 한랭지(전라북도 남원시 운봉시험지, 해발 400m)에서 전개하여 내한성이 강한 계통들을 가장 우선적으로 선발한다. 그러나 다량의 육성 계통으로 인한 선발의 어려움뿐만 아니라 해마다 월동기 온도의 변화로 인해 정확한 내한성 검정의 어려움이 존재한다. 이를 해결하기 위해 내한성 분자마커 개발이 요구된다. 본 연구는 최근 구축한 밀 핵심집단의 연차별 내한성 평가 데이터를 활용하여 전 장 유 전 체 분 석 (GWAS) 를 수 행 함 으 로 써 국 내 환 경 에 적합한 내한성 마커를 개발하기 위해 수행하였다." target="_blank" title="GWAS를 통한 밀 저온 내성 연관 유전자좌 및 유전자 동정 새창에서 열림">
GWAS를 통한 밀 저온 내성 연관 유전자좌 및 유전자 동정
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315
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2023
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밀연구팀 조철오
Global warming has significant effects on the growth and development of wheat and can cause a reduction in grain yield and quality. Grain quality is a major factor determining the end- use quality of flour and a reduction in quality can result economic losses. Therefore, it is necessary to study the physiological characteristic of wheat to understand its response to temperature elevation, which can aid in the development of strategies to mitigate the negative effects of high temperature and sustain wheat production. This study investigated the effects of elevated temperature on grain characteristics and quality during the grain filling period of two Korean bread wheat cultivars Baekkang and Jokyoung. These two bread wheat cultivars were subjected to an increasing temperature conditions regime; T0 (control), T1 (T0+1ºC), T2 (T0+2ºC) and T3 (T0+3ºC). The results showed that high temperature, particularly in T3 condition, caused a significant decrease in the number of grains per spike and grain yield compared to the T0 condition. The physical properties, such as grain weight and hardness, as well as chemical properties, such as starch, protein, gluten content and SDSS, which affect the quality of wheat, were changed by high temperature during the grain filling period. The grain weight and hardness increased, while the grain size not affected by high temperature. On the other hand, amylose content decreased, whereas protein, gluten content and SDSS increased in T3 condition. In this study, high temperature within 3ºC of the optimal growth temperature of wheat, quantity properties decreased while quality-related prosperities increased. To better understand the how this affects the grain’s morphology and quality, further molecular and physiological studies are necessary." target="_blank" title="Effect of High Temperature Stress on Grain Characteristic and Quality during the Growing Season of Korean Bread Wheat 새창에서 열림">
Effect of High Temperature Stress on Grain Characteristic and Quality during the Growing Season of Korean Bread Wheat
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314
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2023
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밀연구팀 조철오
Wheat (Triticum aestivum L.) is the major staple foods and is in increasing demand in the world. However, the rising temperature, attributed to climate and environmental changes, poses a significant threat to wheat growth, yield and quality. For winter wheat, the optimal temperature range is typically between 15°C to 25°C. This study investigates the impact of elevated temperatures on the growth, yield and quality of two Korean bread wheat cultivars, Baekkang and Jokyoung, utilizing Temperature Gradient Tunnels (TGT). The experiment involves four distinct temperature conditions: T0 (control, near ambient temperature), T1 (T0+1°C), T2 (T0+2°C), and T3 (T0+3°C). The results indicated that high temperature, especially under T3 conditions, led to a significant decrease in the number of grains per spike and grain yield compared to the control (T0). Elevated temperature affected the physical properties of the grains, resulting in slightly increased grain weight and hardness, while also leading to an increase in protein contents and causing a reduction in total starch contents. These results are consistent with reduced expression of starch synthesis genes and increased protein metabolism genes. elevated temperatures, exemplified by T3, reduce grain yield by affecting the number of grains per spike. Conversely, they elevate gluten content through the regulation of starch and gliadin-related genes, as well as genes involved in gluten metabolism. This study contributes valuable physiological insights into how wheat responds to heat stress, aiding in our understanding of this critical aspect of wheat cultivation" target="_blank" title="The Impact of Elevated Temperature on Growth, Grain Characteristics, and Quality of Korean Bread Wheat 새창에서 열림">
The Impact of Elevated Temperature on Growth, Grain Characteristics, and Quality of Korean Bread Wheat
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313
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2023
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밀연구팀 김경훈
Wheat is major food crops and is the second most-consumed crop after rice in Korea. The availability of high amylose wheat flour, a source of resistant starch fiber, offers an opportunity to address the proposed issues of health advantages such as enhanced blood sugar management for metabolic disease prevention. In this study, we constructed a wheat core set that is suitable for production use, and then we examined flour amylose content in wheat 614 germplasm and 37 mutant lines. We evaluated flour characteristics using several milling processes such as roller, hammer and grinding mill. As a result, in whole wheat flour, there was a similar to hammer mill and grinding mill in amylose content. Amylose level in straight flour was measured to be 22.4-26.2% using a roller mill. The amylose content distribution was divided into five groups in germplasm. In whole wheat flour of mutant lines, wx-1046 and wx-1074 line has high amylose content. These results could be utilized to help identify elite lines that are the best ideal for high amylose production using NIR.
" target="_blank" title="Amylose content in whole wheat and straight flour for selection of high amylose wheat germplasm 새창에서 열림">
Amylose content in whole wheat and straight flour for selection of high amylose wheat germplasm
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312
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2023
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밀연구팀 이고은
Whole wheat is considered to be highly functional due to its abundance of dietary fiber and antioxidants. Especially, Arabinoxylan (AX) and ferulic acid (FA) are abundant in wheat bran and have been shown to possess antioxidant, anti- inflammatory, and antidiabetic properties. In this study, we analyzed the content of AX and FA in six Korean wheat varieties (Ariheuk, AR; Keumkang, KK; Anbaek, AB; Goso, GS; Shinmichal1, S1; Saekeumkang, SKK) and five imported wheat classes (Australian standard white wheat, ASW; Australian hard, AH; US northern spring, NS; US hard red winter, HRW; Soft wheat, SW) using whole flour and wheat bran. In whole wheat flour, the AX contents of AB (69.74 mg/g), AR (67.89 mg/g), S1 (64.85 mg/g) and FA contents were AB (0.96 mg/g), AR (1.01 mg/g) were higher compared to foreign wheats (AX, 63.76 mg/g; FA, 0.95 mg/g). In wheat bran, SKK exhibited the highest AX (189.65 mg/g) and FA (4.38 mg/g) contents among Korean wheat varieties. These results could aid in developing improved breeding materials for producing wheat varieties with high functional substances.
" target="_blank" title="Comparison of Arabinoxylan and Ferulic Acid Contents in Korean Wheat and Imported Wheat 새창에서 열림">
Comparison of Arabinoxylan and Ferulic Acid Contents in Korean Wheat and Imported Wheat
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311
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2023
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밀연구팀 김경훈
‘Shintong’, a black wheat(Triticum aestivum L.) cultivar was developed by the National Institute of Crop Science, RDA. ‘Shintong’ showed black grain color, facultative type with growth habit of Ⅰ. Whole grain cookie making Suitability of Shintong was also comparable to those of Keumkang." target="_blank" title="A New Black Wheat Cultivar‘Shintong’with Good Whole Grain Cookie Quality 새창에서 열림">
A New Black Wheat Cultivar‘Shintong’with Good Whole Grain Cookie Quality
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310
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2023
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밀연구팀 김경민
Overexpression of Glu-1Bx7 via allele Glu-1Bx7OE significantly contributes to high dough strength in some wheat varieties and is useful for improving wheat quality. Therefore, breeding more wheat varieties with Glu-1Bx7OE subunits would be a promising way to improve wheat quality. However, the proportion of wheat varieties containing Glu-1Bx7OE is significantly lower in Asia, including Korea. This study aimed to develop wheat varieties with increased Glu-1Bx7 expression for wheat quality improvement using a speed-breeding method. Four cultivars containing both the 43 bp insertion in the promoter and Glu-1Bx7 gene duplication were selected from crossing blocks (CB) of wheat in the National Institute of Crop Science (Republic of Korea). Among the selected varieties, CHISHOLM was crossed with Keumkang. And then three times backcross with Keumkang and two self-pollinations, we developmet a homozygous Keumkang near isogenic lines (NILs). Sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) and ultra-performance liquid chromatography (UPLC) analyses showed that the expression of 1Bx7 was significantly higher in NILs compared with that in Keumkang. Wheat quality was analyzed with near infrared reflectance spectroscopy by measuring the protein content and SDS-sedimentation volume of NILs. The protein content of NILs (12.94%) was 21.65% higher than that of CHISHOLM (10.63%) and was 4.54% higher to that of Keumkang (12.37%) but the difference was not significant. In addition, the SDS- sedimentation value of NILs (44.29 ml) was 14.97% and 16.44% higher than that of Keumkang (38.52 ml) and CHISHOLM (38.03 ml), respectively. This study is expected to improve the quality of domestic wheat HMW-GSs by crossbreeding with Glu-1Bx7OE containing cultivars.
" target="_blank" title="Quality analysis of wheat near-isogenic lines(NILs) overexpressing 1Bx7 glutenin subunit 새창에서 열림">
Quality analysis of wheat near-isogenic lines(NILs) overexpressing 1Bx7 glutenin subunit
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309
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2023
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기획조정과 배희수
농촌인구 고령화와 노동력 부족으로 기계화와 자동화 농업의 필요성이 증가하고 있으며, 최근 식량분야에서도 IoT 기술을 접목한 스마트 농업기술 개발이 활발히 이루어지고 있다. 현재 노지 스마트농업 기술 수준은 환경 및 토양 센서 등을 활용하여 환경을 모니터링하고 원격 제어하는 수준이며, 미래 스마트 농업의 핵심인 빅데이터, 인공지능 등 첨단기술의 융합을 통한 자동화?무인화 모델 개발 등 기술 고도화를 이루기 위해서는 장기적이고 체계적인 데이터 수집 기반 마련이 필수적이다. 따라서 본 연구는 논이용 밭작물 재배 확대를 통한 경지이용률 증진을 위하여 노지 식량작물 생육 정보와 환경 데이터 수집 및 공유 환경을 구축하고 식량작물 연구데이터의 디지털화와 활용 체계 마련을 위하여 수행하였다." target="_blank" title="식량작물 스마트농업을 위한 밭작물 생육 및 환경 데이터 수집체계 제안 새창에서 열림">
식량작물 스마트농업을 위한 밭작물 생육 및 환경 데이터 수집체계 제안
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