Pomological properties of seedlings obtained by open pollination of Meeker's yellow clone were investigated. From over a 100 seedlings obtained from this progeny, 16 genotypes with red fruits were selected on the Experimental Station 'Radmilovac' that belongs to the Faculty of Agriculture in Belgrade. Dunnett-test was used for single testing of physical and chemical traits of raspberry genotypes.

Historically speaking, both the introduction of double-cross hybrids and use of single crosses have caused the increase in grain yield and significantly improved agricultural practice. Nowadays, the uniformity of crops is regarded as an advantage of modern agriculture, since the uniformity of products is crucial in global market. Thus, uniformity of crop maturation provides both planning and efficient mechanized harvest. F₁ single-cross hybrids of maize, which is an allogamous species, not only exploit heterosis, but also impose homogeneity.