Correlation and multiple regression analysis between cane yield and its component factors of new variety YT00-236

The relationship between cane yield and its components factors of new sugarcane variety YT00-236 were studied with correlation and multiple regression analysis.The results of correlation analysis indicated that the decreasing order of the importance of these factors to the cane yield was as follows: millable stalkstalk lengthstalk diameter;Multiple regression analysis showed that the contribution of millable stalk to the cane yield was the most,and that of stalk diameter was the least.Besides,multiple regression equation of the cane yield and its component factors was y=42.70608+1.31937x1+26.99126x2-2242.1572x3(r=0.9967**).The results of path analysis demonstrated that the direct effect of millable stalk was the strongest,followed by stalk length,and stalk diameter was the weakest.Consequently,millable stalk and stalk length were both the most important factors of cane yield for YT00-236,which was classified as the sugarcane variety of millable stalk type.And so,in cultivation,it should be considered to develop the advantage of this variety in many millable stalks,taking account of stalk length(plant height),to increase the cane yield,sucrose and income.