当归的形态变化特征与物质积累进程

Morphological Change Characteristics and Material Accumulative Process of Angelica sinensis

目的:通过研究当归成药期的形态变化特征及物质积累进程,为当归的规范化种植提供参考。方法:以当归为材料进行田间试验,定期取样并测定茎叶性状,根部性状,根部浸出物、挥发油、有机酸、多糖、阿魏酸和Z-藁本内酯质量分数等。结果:株高、叶数和叶鲜/干质量在成药期呈先升高后降低的趋势,根长、根粗和根鲜/干质量在成药期呈升高的趋势,浸出物、挥发油、有机酸、多糖、阿魏酸和Z-藁本内酯的质量分数和总量在成药期均呈升高的趋势。结论:茎叶生物量的积累进程快于根部生物量,且浸出物、挥发油、有机酸、多糖、阿魏酸和Z-藁本内酯的积累进程从属于根部生物量。

Objective:To provide theoretical references for standardized cultivation of Angelica sinensis through studying the morphological change characteristics and the material accumulative process of A.sinensis in the medicine period.Methods:Seedlings of A.sinensis were used as field trial material,and plant samples were collected at regular intervals.The stem-leaf traits,root traits,and mass fractions of root extractum,volatile oil,organic acid,polysaccharide,ferulic acid,and Z-ligustilide were determined.Results:During the medicine period,the plant height,leaf number,and leaf fresh/dry mass tended to increase and then decrease,while the root length,root thickness,and root fresh/dry mass tended to increase.The mass fractions of root extractum,volatile oil,organic acid,polysaccharide,ferulic acid,and Z-ligustilide and the total mass fraction showed a rising tendency during the medicine period.Conclusion:The accumulative process of stemleaf biomass was faster than that of root biomass,and the accumulative process of extractum,volatile oil,organic acid,polysaccharide,ferulic acid,and Z-ligustilide was subject to root biomass.