作物学报2026，Vol.52Issue(9)：2628-2640,13.DOI:10.3724/SP.J.1006.2026.64013
基于表型性状的1547份糜子种质资源遗传多样性分析与优异种质筛选
Genetic diversity analysis and screening of elite germplasm based on pheno-typic traits in 1547 broomcorn millet accessions
摘要
Abstract
Broomcorn millet is a traditional grain crop in the Yellow River basin of northern China.In this study,1547 broomcorn millet accessions from different ecological regions were used as experimental materials.They were planted in two experimental bases(Shunyi,Beijing and Huining,Gansu)in 2024.Genetic diversity analysis based on phenotypes was conducted using 10 agronomic traits including main stem length,main stem diameter,main stem node number,and main panicle length.Comprehensive evaluation of the accessions was performed using principal component analysis and path analysis.The results showed that the 1547 broomcorn millet accessions exhibited abundant phenotypic diversity.The genetic diversity index of the 10 agronomic traits ranging from 1.978 to 2.098,with the main stem diameter showing the highest diversity index at both experimental sites.Correlation analysis indicated varying degrees of correlations among multiple traits,with panicle weight per plant showing highly significant positive correlation with grain weight per plant.Principal component analysis extracted 4 principal components,with a cumulative contribu-tion rate of 72.192%,representing plant type,single plant yield,grain-related traits and panicle type.Based on the combined evalua-tion integrating principal component analysis and breeding objectives,23 elite broomcorn millet accessions with favorable traits such as medium to short stature,large grains,high yield,and lodging resistance were identified.关键词
糜子/表型性状/遗传多样性/综合评价/优异种质筛选Key words
broomcorn millet/phenotypic traits/genetic diversity/comprehensive evaluation/elite germplasm screening引用本文复制引用
王跃,刘天鹏,于筱菡,薛亚鹏,杨天育,王瑞云,刘敏轩..基于表型性状的1547份糜子种质资源遗传多样性分析与优异种质筛选[J].作物学报,2026,52(9):2628-2640,13.基金项目
本研究由国家重点研发计划项目"杂粮抗逆抗病种质资源的系统挖掘与精准鉴定"(2023YFD1202703-2),财政部和农业农村部国家现代农业产业技术体系建设专项(CARS-06-14.5-A16),山西省现代农业产业技术体系建设(杂粮)专项资金项目(2026CYJSTX03-12)和山西省重点研发计划项目(2022ZDYF110)资助.This study was supported by the National Key Research and Development Program of China"Systematic Mining and Precise Identification of Resistant and Disease-resistant Germplasm Resources of Mixed Grains"(2023YFD1202703-2),the China Agriculture Research System of MOF and MARA(CARS-06-14.5-A16),the Special Fund for Construction of Modern Agricultural Industrial Technology System of Shanxi Province(2026CYJSTX03-12),and the Key Research&Development Project of Shanxi Province(2022ZDYF110). （2023YFD1202703-2）
