蚜害茶树挥发物组分变化的聚类分析

孙廷哲^1†, 岂泽华^1†, 梁可欣¹, 李沁¹^,², 饶玉春²^,^*(

), 穆丹¹^,^*(

)

Clustering Analysis of Volatile Components from the Tea Plants Infested by Tea Aphid (Toxoptera aurantii)

Tingzhe Sun^1†, Zehua Qi^1†, Kexin Liang¹, Qin Li¹^,², Yuchun Rao²^,^*(

), Dan Mu¹^,^*(

)

图5. 茶树挥发物组分的偏最小二乘法判别分析
(A) 前2个隐变量(LVs)累计解释总变异百分比(红色为自变量, 蓝色为因变量); (B) 健康组和蚜害组在前2个隐变量的得分图(椭圆为基于Hotelling T²计算出的95%置信域); (C) 偏最小二乘法判别分析双标图(实线圆半径为1.0, 虚线圆半径为0.5); (D) 各挥发物(编号同表1)的变量重要性投影(VIP)图(虚线为取值1.0引导线)

Figure 5. The partial least square discriminant analysis for volatile contents of tea plants
(A) The fraction of cumulative explained variations for the first two latent variables (LVs) (red: predictor, blue: response); (B) Scores for the healthy and infested groups with respect to the LV1 and LV2 (the eclipse denotes the 95% confidence interval based on Hotelling T²); (C) The biplot in partial least squares discrimination analysis (the radius for solid and dashed circle is 1.0 and 0.5, respectively); (D) Variable importance for the projection (VIPs) for each volatile (the number is the same as Table 1) organic compound (the dashed line is a guideline for 1.0)