Main Article Content
This worked aimed to know the anatomical features of sugarcane (Saccharum officinarum L.) treated with thiamine. A completely randomized experiment was used and designed in a double factorial scheme at 3x5 levels, in which the first factor consists of a variety of sugarcane: RB86-7515; RB96-6928 and CTC-4; the second factor was thiamine doses in five levels: zero mgL-1; 100 mgL-1; 200 mgL-1; 400 mgL-1 and 800 mgL-1; fifteen treatments were made with five replications, 75 plots in total. Tissues from the leaves and roots were influenced by the exogenous action of thiamine as used at planting, displaying a positive response, doses above 400 mg L-1 can be a limiting factor to the development of these tissues. Factor regarding the sugarcane variety did not influence the anatomy of leaves and roots. Concentrations till 400 mg L-1 of thiamine, at the exogenous administration, promoted a better development on morph-anatomic features of leaves and roots in the planting of sugarcane seedlings.