The article presents the results of the study of phenotypic variation of some morphobiological traits of reproduction system, which are the subcomponents of total productivity of 125 mutant forms of tomato determined in three years different in the complex of climatic conditions of the year, i.e. 2011, 2012 and 2014. It is demonstrated that each of studied traits has the intrinsic degree of variation that changes in the process of ontogenesis depending on plant age status. Significant amplitude of variation of studied traits was noted depending on particular mutant form and in less degree – on conditions of cultivation, 57,6% of mutant forms had upper thresholds of coefficients of variation for all studied traits.