Root system quality is very important for maize growth, development and productivity. The maize breeding, generally, is focused on the performance of aboveground part of plant. It is interesting to compare the relationship between root and shoot of maize studied in divergent conditions. Results of the study of the effects of climatic regimes on variations among maize genotypes were described in paper. The genotype x environment interaction (GEI) are analysed through factorial regression models in order to explicate of the effects of environmental factors on root growth. Chosen statistical method is very helpful tool to evaluate the environmental effect on genetic variability of maize root traits. There was confirmed significant effect of GEI on the root traits. GxE interaction has simply interpretation, because it can be described by the use of linear relations among covariates. It concerns soil and air temperature and water availability (EVTP or rainfall amount).
W artykule omówiono wartość ziarna kukurydzy w produkcji bioetanolu. Porównano wydajność etanolu z różnych roślin oraz efektywność energetyczną produkcji etanolu. Kukurydza jest obecnie najbardziej efektywnym - pod względem ekonomicznym i energetycznym oraz pod względem wielkości produktu z jednostki plonu - źródłem surowca do produkcji etanolu.