Sanidade de sementes de Crataeva tapia e Ziziphus joazeiro

Native species Crataeva tapia L. and Ziziphus joazeiro Mart., known as trapia and juazeiro, respectively, are indicated for recovery of degraded areas. There are few studies about the health of seeds of these species, therefore, the present work had the objective to evaluate the health of the seeds of C. tapia and Z. joazeiro collected from plants and in the soil. There were 400 trapia seeds and 400 juazeiro seeds, of which 200 were collected from the plant and 200 seeds on the soil. These seeds were placed in plates with BDA (potato-dextrose agar) + tetracycline (0.05 g / L) culture medium and kept in incubator for five days for quantification and identification of fungi. Fungi from genus Aspergillus, Fusarium, Rhizopus, Rhizoctonia and Trichoderma were observed in the seeds of C. tapia, with Aspergillus and Fusarium being the most frequent. In seeds of Z. joazeiro, contamination by Aspergillus sp., Fusarium sp., Rhizoctonia solani and Rhizopus sp., being Aspergillus sp. which occurred more frequently. In both studied species, seeds collected in the soil presented the greatest diversity of fungi.