In order to investigate the impact of drought stress on growth of different cultivated types of medicinal Chrysanthemum morifolium Ramat.at branching stage,as well as to assess their drought resistance,5 cultivation types of medicinal C.morifolium were used as experimental materials,and the agronomic traits,bioaccumulation,physiological characteristics and related indicators of each material were measured.The membership function method,principal component analysis,and correlation analysis were employed for a comprehensive evaluation of drought resistance.The results showed that under drought stress,plant height,stem diameter,branch number and biomass accumulation decreased in the branching stage.The contents of proline,soluble sugar and soluble protein were generally increased.The anti-stress enzyme activity was enhanced,and the degree of membrane lipid peroxidation was aggravated.The comprehensive evaluation of drought resistance showed that the drought resistance of each cultivation type of medicinal C.morifolium during the branching stage was ranked as follows:Huaiju('Huaibaiju')>Chuju>Boju>Huangju>Hangju('Dayangju').The results could provide a foundation for medicinal C.morifolium germplasm selection and promoting high-yield and efficient cultivation practices.
关键词
菊花/分枝期/主成分分析/隶属函数分析/抗旱性综合评价
Key words
Chrysanthemum morifolium Ramat./branching stage/principal component analysis/membership function analysis/comprehensive evaluation of drought resistance
维普
万方数据