Silicon alters early development of bean seedlings from seeds infected by Anthracnose

Abstract

The present study aimed to evaluate the effect of seed coating with Si in response to infection in a cultivar susceptible and resistant to Colletotrichum lindemuthianum, on the physiological and health potential of seeds and seedlings, during the initial development of bean culture. The experiment was carried out in a completely randomizeddesign, in a 2 × 2 × 2 factorial scheme, with four replications, where the factors were: cultivar (BRS Esplendor and IPR Tuiuiú), silicate application (with and without Agrosilício® coating) and inoculation (seeds inoculated or not with C. lindemuthianum). In the evaluation of the initial development of the culture, the following variables were measured: germination, first count of the germination test, emergence, emergence speed index (IVE), total seedling length, shoot and root length, total dry mass, aerial part dry matter, root dry matter and aerial part dry matter at 15 days after sowing (DAS). The incidence of C. lindemuthianumin beans was determined by the paper roll method. Covering the seeds with Si reduces the incidence and severity of C. lindemuthianumand provides greater growth of bean seedlings. The effect of responses potentiated by Si is more expressive in the cultivar of greater susceptibility.