The objective was to understand the use and importance of genetic markers used in studies of genetic diversity in potatoes. The most relevant publications of the last twenty years were reviewed in SciELO, LILACS and PUBMED databases scrutinizing the technique used, the main results obtained from the use and evolution of the main marking methodologies in recent years and a better understanding of the techniques most commonly used, concluding that potato cultivars discriminate more accurately with DNA-based markers, since protein-based markers do not discriminate in their entirety.

The objective was to understand the use and importance of genetic markers used in studies of genetic diversity in potatoes. The most relevant publications of the last twenty years were reviewed in SciELO, LILACS and PUBMED databases scrutinizing the technique used, the main results obtained from the use and evolution of the main marking methodologies in recent years and a better understanding of the techniques most commonly used, concluding that potato cultivars discriminate more accurately with DNA-based markers, since protein-based markers do not discriminate in their entirety.

The aim of this study was to evaluate the effects of the yeast Saccharomyces cerevisiae as an additive for the preparation of oat and barley silage in two fermentation times (21 and 42 days). Oat and barley minisilos were prepared using four levels of yeast (0, 15, 30 and 45 g/kg FV). The minisilos were opened at 21 and 42 days. Three silage replicates were prepared for each combination of silage x yeast level x silage time. The bromatological composition values of the oat silage in terms of crude protein (CP), mineral matter (MM), neutral detergent fibre (NDF), acid detergent fibre (FDA), ethereal extract (EE) and pH increased when the yeast was added in relation to the control, but the dry matter (DM) decreased. The quality of the barley silage in terms of DM, CP, NDF, FDA and EE improved when adding 30 and 45 g/kg of yeast, compared to the control; however, it decreased for EE and pH....