Author(s): K. S. KARMAKAR; C. BHATTACHARYA AND A. BAKSHI

Abstract: In this experiment, investigations were done to evaluate the extent of similarities and dissimilarities in correlation coefficient values between different yield and yield contributing characters of capsularis jute at three population levels which were alike. Amongst these three, A and B populations were composed of same four commercially cultivated Corchorus capsularis L. varieties which were grown under normal and topping treated conditions respectively and the C population was comprised of A and B populations. This experiment revealed a few facts which come in front that though the three populations were genetically alike, still the correlation coefficient values obtained at different population levels may be misleading to a breeder to judge the proper relationships between the characters under study at the three population levels. The results of the experiment indicate that, it will be safer for a plant breeder to estimate the correlation coefficient values at normal grown population (A) and the topping treated population (B) levels separately. It will provide a breeder, the right informations in two direction of selection for two different types of desired plant types. The correlation coefficient values of A and B populations will provide informations to a breeder for designing or selecting a desirable plant type for higher seed production, suitable for this agroclimatic situation respectively. The informations available from the combined population may be misleading to a breeder to select or design a particular plant type for the two different treatment conditions. But, the cause of differences in correlation coefficient values at the three population levels studied under this experiment remained unanswered, though all these three populations were composed of varieties with similar genetic make up.

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