水分胁迫对芍药生长和生理生化特性影响的研究

The Effects of Growth and Physiology of Herbaceous Peony under Water Stress

芍药是一种适应性强的宿根花卉,尤其在干旱地区的应用具有良好前景。但芍药不同品种的抗性存在较大差异。本研究以4个芍药品种大富贵、粉玉奴、Karl Rosenfield和Duchesse de Nemours为材料,通过盆栽控水试验,研究不同水分胁迫水平对植株表型性状、光合指标、水分生理指标及其他生理指标的影响,以及4个品种的抗旱性。运用主成分分析和隶属函数法对抗旱能力进行综合评价。结果表明:4个品种的抗旱性依次为Karl Rosenfield>Duchesse de Nemours>粉玉奴>大富贵。这将为芍药在干旱地区的栽培应用提供科学依据。

Herbaceous peony is a kind of perennial flowers with a strong adaptability and a good application prospect especially in arid region.Dafugui,Fen Yu Nu,Karl Rosenfield,and Duchesse de Nemourswere were used to study the effects of different soil water content on phenotypic traits,water physiological index and other physiological indexes,and drought resistance of four cultivars by pot experiment.Principal component analysis and subordinate functions were used to evaluate the drought resistance.The four cultivars could be ranked in decreasing levels of drought resistance as Karl Rosenfield,Duchesse de Nemours,Fen Yu Nu,and Dafugui.This would provide a scientific basis for the application and cultivation of herbaceous peony in arid regions.