This work aimedto compare cultivars of Lotus corniculatus L. (cv. São Gabriel,cv. ARS2620) and L. uliginosus Schkuhr (cv. Maku) through the morphologicaldevelopment analysis. The plants were cultivated in pots and they were harvestedat 90, 120, 150, 180, and 210 days after seeding being evaluated by linear,weight, volume, area, and count measurements. Data were submitted to regressionanalysis as a function of growth days. Cultivars had the same temporal trendfor height, root volume, and shoot dry matter (DM), but differed in terms ofthe magnitude. The DM accumulation (g/plant) was greater for the cvs. Maku (15.0)and S. Gabriel (14.0) in relation to cv. ARS2620 (11.0). The cvs. S. Gabriel,Maku, and ARS2620 differed respectively for plant diameter: 96.7, 80.7, and68.5 cm; crown diameter: 6.5, 15.7, and 8.1 mm; root mass extension: 37.8, 29.2,and 40.4 cm; crown stem number: 37.8, 29.2, and 40.4. The underground systemwas more vigorous in the cv. Maku, which produced more soboles MS (16.3) inrelation to cvs. ARS2620 (4.7) and São Gabriel (2.0), showing potentiallymore persistence under grazing condition.
