190 Int. J. Data Analysis Techniques and Strategies, Vol. 12, No. 3, 2020 Copyright © 2020 Inderscience Enterprises Ltd. Comparison of hierarchical clustering methods for binary data from molecular markers Emmanouil D. Pratsinakis and Symela Ntoanidou Laboratory of Agronomy, School of Agriculture, Faculty of Agriculture, Forestry and Natural Environment, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece Email: pratsina@agro.auth.gr Email: melina-nt@hotmail.com Alexios Polidoros Laboratory of Genetics and Plant Breeding, School of Agriculture, Faculty of Agriculture, Forestry and Natural Environment, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece Email: palexios@agro.auth.gr Christos Dordas Laboratory of Agronomy, School of Agriculture, Faculty of Agriculture, Forestry and Natural Environment, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece Email: chdordas@agro.auth.gr Panagiotis Madesis Institute of Applied Biosciences, CERTH, Centre for Research and Technology Hellas, 57001 6th Km. Charilaou-Thermi Road Thessaloniki, Greece Email: pmadesis@certh.gr