中国农业科学2024，Vol.57Issue(7)：1237-1254,18.DOI:10.3864/j.issn.0578-1752.2024.07.003
小麦穗发芽抗性机制及抗性育种研究
Research on the Mechanisms of Pre-Harvest Sprouting and Resistant Breeding in Wheat
摘要
Abstract
Pre-harvest sprouting(PHS)refers to the germination of cereal crops on the spike in high humidity conditions before grain harvest.Wheat PHS is a significant problem that affects both the yield and quality of wheat.Seed dormancy level is a major factor influencing the resistance of wheat PHS,and domesticated crops often exhibit reduced seed dormancy levels,making cultivated wheat more prone to PHS compared to its wild ancestors.Wheat PHS is mainly regulated by external environmental factors such as temperature and humidity,as well as internal plant hormones(GAs,ABA,IAA,MeJA,ET,BR).Researchers have identified a range of materials resistant to PHS,cloned key genes regulating PHS resistance,such as PM19,MFT,MKK3,Myb10-3D,Vp1.New wheat materials resistant to PHS have been successfully developed through molecular marker-assisted selection,artificial synthesis of wheat,and CRISPR/Cas9 gene editing technology.This article reviews the genetic mechanism of PHS resistance in wheat and the latest progress in PHS resistance breeding research.In the future,it is necessary to continue exploring key genes related to PHS resistance,and employ biotechnological breeding methods to cultivate new PHS-resistant wheat varieties.关键词
小麦/穗发芽/种子休眠/激素/育种改良Key words
wheat/pre-harvest sprouting/seed dormancy/hormone/breeding improvement引用本文复制引用
董慧雪,陈倩,郭晓江,王际睿..小麦穗发芽抗性机制及抗性育种研究[J].中国农业科学,2024,57(7):1237-1254,18.基金项目
科技创新 2030(2023ZD04069)、国家农业科技重大专项(NK20220607)、国家自然科学基金(32301810,32301837,U22A20472)、国家重点研发计划(2018YFE0112000)、四川省科技计划(2023NSFSC0217,2021YFH0077) （2023ZD04069）
