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In the Kalochori region, 9 varieties were studied (Alexandros, Olympiada, Dion, Mare, Samba, Galileo, Gloria, Ronaldo and Luna) in major crop conditions, according to local cultivation practices. Consequently, in the experiments conducted in the Feres region, 4 varieties were studied (Galileo, Ronaldo, Gloria, Sfera) in conditions and cultivation practices similar to those used in the Kalochori region. The experimental design used, for both regions, in this study was a Randomized Complete Block Design (RCBD) with five replications, for the Kalochori region and three replications for the Feres region. Factor A was tillering and Factor B was the varieties used in this study. The interaction (Factor AXB) between Factor A and Factor B was also investigated. Samples were taken during the maturity phase and the following characteristics were estimated: yield, total milling yield, whole milling yield, white rice length, white rice width, white rice length/width ratio, percentage of pearl and 1000 grains weight. Furthermore, the dry matter/m2 was estimated, but only for the Kalochori experiments. Differences were observed between main stems and tillers but also among the tillers themselves, but what became obvious was that the main stems, first tillers and secondary tillers were superior in all the measurements taken, regardless of location. On the contrary, tertiary and quaternary tillers fell short in all the characteristics measured, regardless of location. The difference between the two study areas was that, in the Kalochori region the results were proportional to the tillering rank, while in the Feres region the first tillers produced better results and the main stems and secondary tillers followed. The common ground, between the two study areas was that in both regions tertiary and quaternary tillers fell short and their results were proportional to their rank. As far as varieties is concerned, in the Kalochori region, Mare and Olympiada produced the greatest yield, respectively, followed by Dion, Galileo, Samba, Gloria, Luna and finally the lowest yield was produced by the Alexandros and Ronaldo varieties. As far as quality characteristics is concerned, for the Kalochori region, the variety yielding the best results was Samba followed by Mare and Alexandros, respectively, and last came the Gloria variety. Furthermore, in the Feres region, the variety with the greatest yield was Sfera, followed by Ronaldo and the varieties which produced the least amount of yield, were the Galileo and Gloria, respectively. As far as quality characteristics is concerned, vi the variety which yielded the best results was Gloria and the worst results were presented by the Sfera variety.