盾叶薯蓣薯蓣皂甙元含量与气候因素的相关性研究

RESEARCH ON CORRELATIONS BETWEEN CLIMATIC FACTORS AND DIOSGENIN CONTENT IN DIOSCOREA ZINGIBERENSIS WRIGHT

摘要: 以简单相关、多元回归及逐步回归分析等方法研究我国湖南湖北等27个县的盾叶薯蓣皂甙元含量与七个气候生态因子的关系。结果表明:1.年降水量和年平均5 cm土温为影响盾叶薯蓣皂甙元含量的主要因素;2.盾叶薯蓣皂甙元合成与积累的最适气候生态条件为:年降水量:800～900 mm,以850 mm最佳;年平均5 cm处土温:15～17℃,以16℃最佳。

Abstract: Dioscorea zingiberensis wright is native to China. In this paper eorretlaions between seven climatic factors(mean annual temperature, mean annual relative humidity, mean annual 5 cm soil temperature, annual precipitation, Annual sunshine hours, mean annual sunshine percentage and annual≥10℃ accumulative temperature) and diosgenin content has been reported. It is annual precipitation and mean annual 5 cm soil temperature that are real principal factors affecting the diosgenin content. The most suitable climatic range for the biosynthesis and accumulation of diosgenin is as follows:Annual precipitation:800～900 mm, 850 mm the best.Mean annual 5 cm soil temperature: 15～17℃, 16℃ the best.