Evaluation of quality differences among 15 ginger germplasm accessions from different habitats

LÜ Jinli; LUO Kai; LÜ Shuming; XIAO Yanlin; WU Di; ZHANG Donglian; YUE Yonggui; LIU Yan; HU Juan; LI Wei

doi:10.16861/j.cnki.zggc.2025.0350

Abstract：Using 15 ginger germplasm accessions from distinct ecological habitats as materials,the content of quality traits such as curcumin,6-gingerol,8-gingerol,volatile oil,crude fiber,and moisture content were determined.Cluster analysis(CA)and principal component analysis(PCA)were combined with source habitat information to evaluate the quality differences among the resources.The results showed that the content of curcumin,6-gingerol,8-gingerol,volatile oil,crude fiber,and moisture in the 15 ginger germplasm ranged from 1.417 to 3.480 mg·kg-1,0.150%to 0.253%,0.022%to 0.036%,0.680 to 1.055 mL·100 g-1,1.383%to 1.750%,73.625%to 88.606%,respectively.The curcumin content of small yellow ginger was generally higher than that of Erhuangjiang(Zingiber officinalecv.Erhuang),and the Shuicheng small yellow ginger exhibited prominent overall advantages in 6-gingerol content.Relatively high altitude and low annual temperature significantly promoted the accumulation of curcumin and 8-gingerol,while moderately high altitude rainy yellow soil regions were conducive to 6-gingerol synthesis.Curcumin content was significantly positively correlated with 6-gingerol content,while both were negatively correlated with crude fiber content.Shuicheng small yellow ginger G2 was identified as the resource with the best overall quality,while Qibo small yellow ginger G9 exhibited both high volatile oil content and low crude fiber content.The quality of Shuicheng small yellow ginger from different habitats varied signifi-cantly,with rich diversity,highlighting the potential for screening high-quality ginger varieties.