Correlation coefficient and path analysis in yam bean (Pachyrhizus errosus L. Urban)

摘要

Yield in plant is the end product of interaction of many correlated characters. Selection for these characters, which are highly heritable and positively correlated. When more number of variables are considered in correlation, the association becomesmore complex and less obvious. The use of path coefficient analysis is helpful under such situations. This analysis shows the direct and indirect association and reveals the most reliable yield contributing characters. In a wide range of variability is available which provides a great scope for improving tuber yield through a systematic and planned selection programme for one or more direct or indirect yield components. Keeping in view the above facts, the present investigation was conducted to determine the nature and degree of association among the characters and their direct and indirect effects on tuber yield.