Micoflora of common bean (<i>Phaseolus vulgaris</i> L.) seeds from Sergipe state

Abstract

Seeds infected by pathogens in a field can have their health altered during storage, because of viability loss. The objective of the present study was to verify the effect of storage of bean seeds on their health quality. Bean seeds of varieties IPA11, Carioca Rajado and Grafite were obtained from growers in the city of Simão Dias – SE. The seeds were stored in a cold chamber for ten months and then, seed health tests were performed. The bean seeds  were analyzed by the blotter test method, incubated for seven days, with a sample of 25 seeds with 8 replications, with a total of 200 seeds for each variety. A high incidence of Fusarium solani f. sp. solani (10,5 a 36,0%) and Rhizoctonia solani (7,0 a 33,0%) in varieties IPA11 and Carioca Rajado was observed. Other pathogens of bean seeds like Alternaria alternata, Periconia sp., Phoma sp. and Sclerotium rolfsii has been identified, but with low rates. Alternaria alternata (0,5%) and Periconia sp. (0,5%) were observed in IPA11 and Carioca Rajado varieties. Sclerotium rolfsii was observed in Grafite variety (0,5%) and Phoma sp. was verified in Carioca Rajado (0,5%). Within the storage fungi, the presence of Aspergillus sp. (0,5 a 2,0%) was observed in all varieties and Penicillium (0,5 a 14,0%) only in varieties IPA11 and Carioca Rajado.