Particularities of the wheat varieties seeds germination under the black- point attack incidence

The research has been performed on healthy and affected by black-point wheat seeds from wheat varieties grown in Modelu location, Calarasi County. It have been studied germination rate, the coefficient of seed germination velocity, vigor index, the length of embryonic roots and plumule, fresh mass of plantlets, membrane permeability, water content, dry matter and minerals. The implicated micoflora in black-point attack was represented by Alternaria sp, Fusarium sp, Stemphyllium sp, Rhizopus sp, Aspergillus sp, Cladosporium herbarum, Penicillium sp. Germination rate of seeds free of black-point was higher than in affected seeds, but the micoflora detected and associated with the occurrence of the attack did not inhibit the germination process. Instead, the coefficient of germination velocity and seed vigor index values was slightly higher for black-point-free seed. The fresh mass of embryonic roots was superior to Floradur variety in both variants. Plumule length was superior to all varieties monitored of black-point free seeds. Membrane permeability after 24 hours was higher in seeds affected by black-point compared to the values healthy samples.