作物学报2025，Vol.51Issue(10)：2652-2662,11.DOI:10.3724/SP.J.1006.2025.51024
小麦骨干亲本鲁麦14系谱分析
Pedigree analysis of the wheat backbone parent Lumai 14
摘要
Abstract
As a staple food crop in China,wheat plays a vital role in national food security,and the development of elite cultivars is of paramount importance.Lumai 14,a representative variety in the Huang-Huai wheat region,exhibits superior traits such as high yield,stability,and resistance to multiple diseases.These attributes have made it not only a key cultivar in production but also an important backbone parent in breeding programs.In this study,we systematically analyzed the pedigree of Lumai 14 and its 438 derived varieties,constructing a pedigree network to trace the genetic lineage from the early foundational parent Youzimai to Lumai 14.We also examined the spatiotemporal distribution patterns of its derived varieties.The results showed that since 1991,Lumai 14 has contributed to the development of 438 derived lines,including 285 third-generation varieties.Notably,in the past five years alone,264 new varieties have been developed,with over half derived from Jimai 22,highlighting its substantial breed-ing influence.These findings indicate that both Lumai 14 and Jimai 22,like their ancestral parents Youzimai and Youbaomai,continue to serve as critical backbone parents and valuable germplasm resources in China.The majority of Lumai 14-derived varieties are concentrated in Shandong and Hebei provinces,located in the northern Huang-Huai wheat region.Further analysis of breeding trends over the past five years revealed an increasing issue of repetitive and concentrated use of backbone parents.Ge-netic diversity analysis of 20 Lumai 14-derived and 9 Lumai 13-derived varieties using the wheat 55K SNP chip showed that the genetic similarity coefficients among these 29 varieties ranged from 0.87 to 0.99,indicating a high level of genetic homogeniza-tion.Moving forward,greater attention should be given to the narrowing genetic base of wheat in China,and efforts to innovate and expand germplasm resources should be strengthened.关键词
小麦/品种/鲁麦14/骨干亲本/系谱分析Key words
wheat/variety/Lumai 14/backbone parents/pedigree analysis引用本文复制引用
史晓磊,崔法,孙旭生,潘国庆,邱丽华,戎鑫愉,赵春华,吴永振,孙晗,秦冉..小麦骨干亲本鲁麦14系谱分析[J].作物学报,2025,51(10):2652-2662,11.基金项目
本研究由泰山学者项目(20230119),烟台市科技计划项目(2023ZDCX023),山东省重点研发计划项目(2024LZGCQY012,2022LZG002-2)和山东省自然科学基金项目(ZR2022MC119)资助. This study was supported by the Taishan Scholars Program(20230119),the Yantai Science and Technology Plan Project(2023ZDCX023),the Key R&D Program of Shandong Province(2024LZGCQY012,2022LZG002-2),and the Shandong Provincial Natural Science Foundation(ZR2022MC119). （20230119）
