植物遗传资源学报2026，Vol.27Issue(8)：1547-1561,15.DOI:10.13430/j.cnki.jpgr.20260228002
党参及杂交群体的表型变异与党参炔苷含量分析
Analysis of Phenotypic Variation and Lobetyolin Content in Codonopsis pilosula and Its Hybrid Populations
摘要
Abstract
Codonopsis pilosula(Franch.)Nannf.and Codonopsis pilosula var.modesta(Nannf.)L.T.Shen are two major medicinal germplasm widely cultivated in Gansu province,China.Based on distant hybridization breeding,35 accessions of each parent along with 127 F1 hybrid progenies derived from their cross were utilized as experimental materials.Thirteen morphological traits of roots,stems and leaves,along with the lobetyolin content in roots,were systematically measured and analyzed under indoor hydroponic conditions.The results demonstrated that the two parents exhibited no significant differences in the mean values of morphological traits,whereas C.pilosula showed a highly significantly higher lobetyolin content than C.pilosula var.modesta.However,the C.pilosula var.modesta population displayed a higher average genetic diversity index and average coefficient of variation than C.pilosula population.The F1 population achieved the highest average genetic diversity index(1.56)compared to both parents,while its average coefficient of variation was lower than that of the parents,indicating a more stable phenotypic structure with reduced fluctuation amplitude.Principal component and hierarchical cluster analyses revealed that the F1 population formed a novel trait combination structure.Most above-ground traits exhibited significant mid-parent and transgressive heterosis,presenting positive transgressive segregation.Lobetyolin content was weakly correlated with morphological traits within the parental populations.Crucially,within the F1 population,lobetyolin content showed highly significant positive correlations with root diameter,number of lateral roots,and root length(P＜0.01).This study reveals that although the morphological differences between the two parental varieties are limited,their hybrid progenies display abundant phenotypic variation and structural reconfiguration between quality and morphological traits,providing a theoretical basis for germplasm innovation and indirect selection of superior agronomic traits in C.pilosula关键词
纹党/渭党/杂交F1群体/党参炔苷/表型遗传多样性/超亲分离Key words
Codonopsis pilosula/C.pilosula var.modesta/F1 hybrid population/lobetyolin/phenotypic genetic diversity/transgressive segregation引用本文复制引用
张辉,张颖,李婷玉,刘婷,张荟萍,房静,段婷婷,史晓雯..党参及杂交群体的表型变异与党参炔苷含量分析[J].植物遗传资源学报,2026,27(8):1547-1561,15.基金项目
甘肃省高等学校产业支撑计划(2022CYZC-14) （2022CYZC-14）
兰州市科技人才创新创业项目(2023-RC-37) （2023-RC-37）
兰州市安宁区强科技项目(2024-JB-2)Gansu Provincial Colleges and Universities Industry Support Program(2022CYZC-14) （2024-JB-2）
Lanzhou Science and Technology Talents Innovation and Entrepreneurship Project(2023-RC-37) （2023-RC-37）
Lanzhou City Anning District Science and Technology Strengthening Project(2024-JB-2) （2024-JB-2）
