摘要：The aim of this paper was to observ the differences between three lettuce varieties, Silișteană C, Lollo Rosso and Lollo Bionda, in terms of growth and development. Experimental research activity was carried out in the solar belonging to S.C. Salpitflor Green S.A. Pitești. Were monitoried parameters such as: plant height, number on leaf on the plant, the diameter of the rosetts of leaves, the weight of leaf rosette, the lenght of the root system and the weight of the root system. The result were compared and recomandations were made. The three lettuce varietes reacted differently, generally the differences between the values of the different characters measures being very obvious. Higer results for all studied characters were obtained in the Silișteană C variety, compared to the other studied varietes, denoting that it is a valuable, vigorous and balanced variety. In all the studied characters, the Lollo Bionda variety recorded the lowest values, showing a lower quality than the other variants.
