Genetic Correlation and Path Analysis of Cotton Inbred Lines

An crossing random experiment was conducted to analyse 10 agronomic characters of 20 cotton inbred lines.The study results show that the boll number is the most important factor that determines the cotton lint yield per plant ,the correlation coefficient and path coefficient of its number and lint yield per plant are respectively r=0.911 1 and P=0.835;the correlation coefficient and path coefficient of boll weight and lint yield per plant are r=0.459 6,P=0.435.In breeding practices,the single plant with high lint yield can be selected on the basis of the effect of agronomic character on lint yield of single plant and the interaction among agronomic characters.