Effect of microtuber size and planting density on minituber production in potato

Effect of microtuber size and planting density on traits related to minituber production, in two potato cultivars; Agria and Marfona with three size: <5, 5-10 and >10 millimeter were studied. Microtubers were cultivated with three density (50, 75 and 100 microtuber /m2). The experiment was carried out using a RCB design, with three replications. In this research, number and weight of minitubers per m2 and also means of diameter and weight of minituber were measured. Analysis of variance indicated significant effect of genotypes, size and planting density of microtubers on all traits. In this research, cv. Marfona with 292 minitubers per m2 had greater yield than Agria. Although the diameter and weight of minitubers, Agria showed superiority, but With increasing diameter and weight of microtuber, minituber weight per m2 increased, while minituber diameter decreased.