Study on the adaptability of Misconstrues sacchariflorus biological components to soil water stress

Effects of soil water stress on biological components of Misconstrues sacchariflorus were studied by using pot cultured seedlings as experimental materials, exposing them to light, moderate stress and heavy water stress. Results showed that the plant height, stem diameter, stem internode length, leaf area, specific leaf weight, rhizome stem diameter, rhizome distribution depth, rhizome internode length, ground and underground part biomass, and crown root ratio declined with stress increased. M.sacchariflorus can adapt to light water stress. Under light water stress, except crown root ratio, stem diameter, leaf area, specific leaf weight and member, the rest biological components(normal water supply) had no significant difference（P＞0.05), with control. Under moderate and heavy water stress, biological components were serious restrained and had significant difference （P＜0.05） with control.