摘要
运用回归分析的方法得出,线虫 Steinernema feltiae 的 Beijing 品系对大蜡螟(Gal-leria mellonella)的致死率与其侵入率之间呈显著的正相关,且为双曲线关系,相关指数 R=0.89。通过求该双曲线的最大曲率点坐标,给出了一个衡量 Beijing 品系的线虫毒力高低的标准:只要线虫的侵入率能达到7.39%,就认为它属于毒力较高的线虫。
The method of regression analysis in the evaluation of the toxicity of Steinernema feltiae Beijing was reported.The result showed that the killing rate of the S.feltiae Beijing against Galleria mel- lonella is significant positive related to its invasion rate,and the relationship of the two rates was proved to be a hyperbola,the related exponent R was 0.89.The invasion rate of 7.39% was confirmed to be the standard on evaluating the toxicity of the S.feltiae Beijing in the calculation of coordinates of the biggest point of curvature.The S.feltiae Beijing was regarded as high toxicity when its invasion rate was higher than 7.39%.
基金
国家自然科学基金
关键词
侵入率
致死率
回归分析
曲率
线虫
毒力
invasion rate
killing rate
regression analysis
curvature
