밀 고온 스트레스 영향 및 내고온성 증진을 위한 연구 동향

• Published in: Korean journal of breeding Vol. 57; no. 2; pp. 103 - 130
• Main Author: 김유림(Yurim Kim), 최명구(Myoung-Goo Choi), 정한용(Han-Yong Jeong), 박진희(Jinhee Park), 김유림(Yurim Kim), 이고은(Go Eun Lee), 김숙진(Sukjin Kim), 이정희(Jeong-Heui Lee), 조철오(Chuloh Cho)
• Format: Journal Article
• Language: Korean
• Published: 한국육종학회 01.06.2025; The Korean Breeding Society
• Subjects: 농학; heat tolerance; heat stress; wheat; breeding strategies; adaptation mechanisms
• ISSN: 0250-3360; 2287-5174
• DOI: 10.9787/KJBS.2025.57.2.103

Wheat (Triticum aestivum L.) is a major cereal crop grown worldwide, providing approximately 20% calorie and 25% protein intake. Wheat productivity is significantly affected by high temperatures, particularly during the grain-filling period. Heat stress accelerates leaf senescence, impairs photosynthesis, reduces starch accumulation, and alters protein synthesis, ultimately leading to a decrease in grain yield and quality. To mitigate the adverse effects of heat stress, wheat utilizes adaptation mechanisms, including the expression of heat shock proteins, activation of antioxidant defense systems, osmotic regulation, and transcription factor-mediated gene regulation. Stay-green traits also play a role in maintaining photosynthetic efficiency at high temperatures. Breeding strategies such as traditional breeding, marker-assisted selection , genomic selection , and genome editing are being explored to improve heat tolerance. Recent advances in the CRISPR-Cas9 technology enable precise gene editing, thereby enhancing the resilience of wheat to heat stress. Additionally, quantitative trait locus mapping and genome-wide association studies facilitated the identification of genetic regions associated with heat tolerance, thereby accelerating the development of climate-resilient wheat varieties. Future research should focus on integrating genetic and molecular approaches with sustainable agronomic practices and crop modeling strategies to optimize wheat productivity under rising temperatures. The integration of advanced breeding techniques and improved crop management can facilitate the development of wheat varieties that are more resilient to climate change. KCI Citation Count: 0