Chemical composition and morphophysiological responses of Manihot plants

Cassava (Manihot esculenta Crantz) is an important forage source for livestock, while wild cassavas (maniçoba and pornunça – Manihot sp.), native from Brazilian semi-arid have the potential to feed ruminants in drylands. We hypothesized that maniçoba a chemical composition morphophysiological responses similar cassava cultivars. Nine plants were evaluated, six accessions (BGMS 20, BGMS 21, 22, 26, 79, 102), 24) two cultivars (gema-de-ovo [GO] engana-ladrão [EL]). evaluated 6-month crop cycles under completely randomized design with four replicates. The genotype 20 had higher shoot biomass than 24, EL, GO, as well leaf mass EL GO. Photosynthesis, temperature, stomatal conductance, transpiration among genotypes (13.83 µmol.m-2.s-1, 29.90 ºC, 0.12 mol.m-2.s-1 2.75 mmol.m-2.s-1, respectively). crude protein content others, except 21 24. Genotypes did not differ concerning situ vitro (dry matter (DM)) degradability mineral composition. 24 number of leaves taller other genotypes, 22. In gas production was considering total carbohydrates. Wild showed biomass, physiological responses, compatible cultivars; therefore, they show alternative forages livestock.