The plant materials for the present study comprised 31 exotic and local potato varieties. These were collected from genetic engineering and plant breeding laboratory Department of Botany, University of Rajshahi and Akafuji agro-technologies Ltd. Rajshahi, Bangladesh. The varieties were All blue, Granula, Shepody, Ladyrosety, Petroneous, Carage, Banana, Quience, Baraka, Blady, JPR, Shita white, Altra, Febula, Chieftan, Hipita, Innovator, Jamalu, Akira, Dumini, Shill bilati, Atlanta, Hagri, All red, Asterix, Atlas, Lalpakri, Voyager, Haita red, Diamond, Indurkani and were grown at Botanical research field at Rajshahi University, Rajshahi, Bangladesh during the rabi crop season of 2011-2012. The experiment was laid out in a randomized complete block design with three replications. The field size was 26×12 sq. m. whole experimental field was divided into three blocks and the size of each block was 3 m × 26 m. Each replication comprised one block. There were 31 rows in each replication. At the final land preparation recommended doses of fertilizers viz., 420 kg/ha N, 350 kg/ha P, 350 kg/ha K, 20 kg/ha S, 110 kg/ha gypsum, 12-15 tons/ha cowdung, were used. The potato tubers were planted during first week of November for two years. Intercultural operations like weeding, irrigation, mulching and earthing up were performed as and when necessary. Indofile M-45 (0.2%) was sprayed at 15 days interval commencing from 30 days after planting for prevention of fungal disease. Ten potato plants were selected at randomly in each replication and observations were recorded for plant height (cm) (PH), main stem number/plant (MSN), secondary stem number/plant (SSN), leaf number/plant (LN), leaf area/plant (LA), canopy size(CS), dry matter(%)/plant (DM), number of tuber/plant (NT), tuber weight/plant (TW), average tuber weight/plant (ATW). Analysis of variance was worked out using the method of Panse and Sukhatme. Genotypic (GCV) and phenotypic co-efficient of variation (PCV), heritability in broad sense (h2b), genetic advance (GA), genetic advance as % of mean (GAM), genotypic (rg) and phenotypic (rp) correlation coefficients were done following the formulae used by Singh and Choudhury. The above calculations were done for all the studied characters.