Abstract

Variability was induced in blackgram-cultivar T-9, through colchicine treatment of seeds and these colchicine induced mutant plants (colchiploids) were studied to find out the character association with yield through correlation and path coefficient analysis. This study clearly exhibited a certain positive correlation between plant height with stem girth, number of bunches per plant, number of pods per bunch and per plant and 100 seed weight. Further an interesting negative correlation between number of seeds per pod with grain yield was also reflected in this study and in addition the regression function indicated a high degree of influence on number of bunches per plant and the total number of days taken by the plant to flower on the expression of grain yield. The path analysis revealed that the total number of bunches per plant exerted the maximum direct effect on grain yield followed by the number of pods per plant, the total number of days taken by the plant for flowering and 100 seed weight.

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