【摘要】 目的:研究美花石斛茎的淀粉粒数量、多糖含量、生物碱含量之间的相关性。方法:显微计数法统计茎的淀粉粒数量,硫酸-蒽酮比色法测定多糖含量,溴甲酚绿比色法测定生物碱含量;Pearson积差相关分析、Kendall’s等级相关分析、Spearman’s和谐系数分析研究三者的相关性。结果与结论:美花石斛茎的淀粉粒数量与其多糖含量有极显著的正相关性,而淀粉粒数量及多糖含量均与生物碱含量呈显著的负相关性。更多还原

【Abstract】 Objective:To find out the relativity among starch quantity,polysaccharides content and total alkaloid content of Dendrobium loddigesii.Method:Microscopy-counting process was applied to starch quantity statistics,sulfuric acid-anthrone colorimetry was used to assay polysaccharides content and bromocresol green colorimetry was used to assay alkaloid content.Pearson product moment correlation analysis,Kendall′s rank correlation analysis and Spearman′s concordance coefficient analysis were applied to study their relativity.Result and Conclusion:Extremely significant positive correlation was found between starch quantity and polysaccharides content,and significant negative correlation between alkaloid content and starch quantity was discovered,as well was between alkaloid content and polysaccharides content.更多还原