Aluminum and maganese tolerance of wheat (Triticum aestivum L.) cultivars: II. screening for manganese toleranceThyrty wheat cultivars were evaluated by means of culture in nutritive solutions containing 0.0, 8.0, 16.0, 24.0 e 32.0 ppm of Mn, under greenhouse conditions. After 17 days in the nutritive solutions, the dry matter weight of roots and aerial parts were measured. When the analysis of variance was signficant, the study of the regression equations for each parameter and cultivars showed CNTl and Frontana as sucetible, Sonora 63 and Maringá slightly suscetible, being the others (26) tolerant.