山西农业科学2025，Vol.53Issue(2)：26-34,9.DOI:10.3969/j.issn.1002-2481.2025.02.05
小麦持绿性状遗传的研究进展
Research Progress on Genetics of Stay-Green Traits in Wheat
摘要
Abstract
Wheat(Triticum aestivum L.),as one of the world's most important staple crops,faces significant challenges in yield and stability due to abiotic stresses such as drought and heat stress.Stay-Green(SG)is a vital agronomic trait that delays leaf senescence,and sustains photosynthetic capacity of leaves,thereby significantly enhancing wheat's stress resistance and yield stability,it exhibits important applied value particularly under adverse environmental conditions.Through genetic mapping QTL and genome-wide association studies(GWAS),over 300 chlorophyll-related QTLs have been identified recently.Key genes,such as Stay-Green(SGR),Pheophytinase(PPH),and Non-Yellow Coloring 1(NYC1),have been identified to play critical roles in regulating chlorophyll metabolism and photosynthetic efficiency.Additionally,hormonal signaling pathways and transcription factor networks collaboratively regulate leaf senescence.In phenotype identification techniques,high-throughput and precise measurement technologies,such as UAV-based remote sensing and hyperspectral imaging,have substantially improved the efficiency of stay-green research,offering technical support for identifying key stay-green genes and unraveling regulatory networks.In breeding applications,marker-assisted selection(MAS)and advanced gene-editing technologies have accelerated the improvement of stay-green traits,enhancing photosynthetic efficiency and yield stability in wheat under stress conditions.In order to address the challenges posed by frequent extreme weather and promote wheat stress resistant and high-yield breeding,in this article,the classification and functional characteristics of stay-green traits in wheat were comprehensively overviewed,focusing on their roles in delaying leaf senescence and improving stress resistance,and photosynthetic efficiency.By highlighting research progress on the genetic basis,molecular regulatory mechanisms of stay-green traits,future research directions were proposed.关键词
小麦/持绿性状/遗传基础/分子调控/抗逆性/分子育种Key words
wheat/stay-green traits/genetic basis/molecular regulation/stress resistance/molecular breeding分类
农业科技引用本文复制引用
杨斌,郑军..小麦持绿性状遗传的研究进展[J].山西农业科学,2025,53(2):26-34,9.基金项目
山西省科技成果转化引导专项(202304021301052) （202304021301052）
山西省重点研发计划(202302140601001) （202302140601001）
