USO DE Bacillus spp. NO CONTROLE DE FITOPATÓGENOS EM SEMENTES DE SOJA VARIEDADE BRS VALIOSA RR

Abstract

The seeds were microbiolized with the bacterial suspension in saline (0.85% NaCl) at a concentration of OD 540 = 0.5 AA and brought to a shaking table for 30 minutes. Seeds were plated on filter paper in experiments conducted in the laboratory with a completely randomized design with six treatments and five replications. We evaluated the incidence and reduction of pathogens in seeds. There was the assessment of healthy and infected seeds. The BRS Valiosa RR showed 48% of healthy seeds and 52% of infected seeds. According to the analysis of the incidence and control of pathogens in seeds with the use of Bacillus spp., the species Bacillus licheniformis and Bacillus pumilus showed the highest percentage rates of control in the range used in the experiment.

Physiological and sanitary quality of maize seeds treated with biological control agents

“…The result afore mentioned can be explained by the fact that seeds remained for 24 hours in the freezer, affecting B. subtilis cells. Different results were found by Angonese et al (2009), in which Bacillus genus bacteria showed great potential to be used as phytopathogenic fungi biological control agents, significantly reducing Fusarium graminearum and Stenocarpella maydis infection in maize seeds (Luz, 2001) and fungi incidence in soybean seeds (Bezerra et al, 2013).…”

Microbiolização na qualidade de sementes e crescimento inicial de plantas de Vigna unguiculata L. Walp

“…Para a microbiolização foi adotada a metodologia adaptada por Bezerra et al (2013), onde 50 sementes em cada replicata foram imersas em cada uma das suspensões (70 mL) durante 60 minutos. Para a testemunha, as sementes foram imersas somente em 70 mL de ADE.…”

Restritores Hídricos E Seu Uso Na Inibição Da Germinação De Sementes De Abóbora E Tomate Durante Teste De Sanidade

“…(JUNGES et al, 2014). Essa técnica consiste em embeber o papel filtro com restritores hídricos que permita o adequado controle da germinação das sementes, de maneira a não afetar o desenvolvimento de fungos associados a sementes (BEZERRA et al, 2013).…”

“…Esse efeito pode ser atribuído à menor mobilização das reservas, menor síntese e atividade enzimática e mudanças na turgência celular (BEZERRA et al, 2013).…”