A Model for Predicting Chlorophyll Content in Cassava Based on SPAD Values
In order to investigate a non-destructive and quick measuring method for chlorophyll content in cassava,a model for predicting total chlorophyll content that was based on SPAD values,specific leaf area,chlorophyll content was established.The results indicated that the influence of chlorophyll A to SPAD values was larger than chlorophyll B;specific leaf area and leaf position and SPAD values and chlorophyll content showed significant correlation;added specific leaf area and leaf position,the accuracy of the model for predicting total chlorophyll content was improved;based on SPAD values,specific leaf area and leaf position,the model for predicting total chlorophyll content was established as C=-4.51+0.092 5 Sp+0.039 9 Sa+0.145 0(Lp).