This study aims to evaluate the bio-morphological and biochemical variability of three Tunisian wild populations and one growing cultivar of purslane (Portulaca oleracea L.). The studied varieties should be easily distinguished by the color and the habitus of the plant as mentioned in literature, but the various analyses have shown a strong morphological heterogeneity within and among the wild and cultivated accessions as presented by the variance analysis test (ANOVA) and the PCA (Principal component analysis). We found high intrapopulation variability through the wild populations that make it hard to differentiate them only on the base of morphology. We analyzed the biochemical profile of those populations based on the analysis of freeze-dried samples of leaves and stems. We identified and quantified twelve different phenolic compounds by the HPLC-diode array detector (DAD) technique. Six phenolic acids and flavonoids were identified in the leaves and stems of the wild and cultivated populations. Sinapic acid and myricetin are the majors identified compounds through our samples. The results were significantly different in relation to the plant organs and to the geographic origin for most of the compounds. The obtained results highlighted the importance of Portulaca as a medicinal plant by showing its richness in phenols and flavonoids that have multi-medicinal effects besides their antioxidant power.

中文翻译：

---

突尼斯马齿race野生种群和栽培品种的形态特征和酚类化合物

本研究旨在评估三个突尼斯野生种群和一个正在生长的马齿sl（马齿ula）的生物形态和生化变异性。所研究的品种应易于通过颜色和习性加以区分 如文献中所述，但是各种分析表明，如方差分析测试（ANOVA）和PCA（主成分分析）所显示的，野生和栽培种内和种之间均存在很强的形态异质性。我们发现野生种群具有较高的种群内变异性，这使得仅根据形态很难区分它们。我们基于叶和茎的冻干样品分析，分析了这些种群的生化特征。我们通过HPLC-二极管阵列检测器（DAD）技术鉴定并定量了十二种不同的酚类化合物。在野生和栽培种群的叶和茎中鉴定出六种酚酸和类黄酮。芥子酸和杨梅素是通过我们的样品鉴定出的主要化合物。对于大多数化合物而言，结果在植物器官和地理来源方面都存在显着差异。获得的结果强调了马齿ula作为药用植物，它富含酚和类黄酮，除了具有抗氧化能力外，还具有多种药用作用。