Sanitary quality in seeds from species of Caatinga biome and control methods for fungi

Luan Vítor Nascimento; Geovane de Almeida Nogueira; Tatianne Raianne Costa Alves; Maria Bruna Medeiros Araújo; Jeferson Luiz Dallabona Dombroski; Frederico Santos Machado; Márcia Michelle de Queiroz Ambrósio

doi:10.9755/ejfa.2019.v31.i12.2044

Authors

Luan Vítor Nascimento Crop Protection, Department of Plant Pathology and Plant Protection. Georg-August-Universität Göttingen, 37077, Göttingen, Germany
Geovane de Almeida Nogueira Centro de Ciências Agrárias, Departamento de Ciências Agronômicas e Florestais. Universidade Federal Rural do Semi-Árido, Campus Mossoró (UFERSA), 59625-900, Rio Grande do Norte, Brazil
Tatianne Raianne Costa Alves
Maria Bruna Medeiros Araújo
Jeferson Luiz Dallabona Dombroski Centro de Ciências Agrárias, Departamento de Ciências Agronômicas e Florestais. Universidade Federal Rural do Semi-Árido, Campus Mossoró (UFERSA), 59625-900, Rio Grande do Norte, Brazil
Frederico Santos Machado Petrobras, Centro de Pesquisa Leopoldo Américo Miguez de Mello, Gerência de Meio Ambiente, 21941-915, Rio de Janeiro, Brazil
Márcia Michelle de Queiroz Ambrósio Centro de Ciências Agrárias, Departamento de Ciências Agronômicas e Florestais. Universidade Federal Rural do Semi-Árido, Campus Mossoró (UFERSA), 59625-900, Rio Grande do Norte, Brazil

DOI:

https://doi.org/10.9755/ejfa.2019.v31.i12.2044

Abstract

Sanitary and quality of seeds of three native species (Aroeira, Jucá, and Mofumbo) from the Caatinga biome, Brazil, and different control methods of microorganisms in seeds were evaluated. We used 500 seeds of each species, 100 for each treatment: control, superficial disinfestation, Enzimatic II, Captana and Mancozebe. Seeds were distributed in Petri dishes containing potato-dextrose-agar culture medium and stored in incubator type Biochemical Oxygen Demand at 28 ± 2 °C for five days. For germination tests, 100 seeds were arranged in germitest paper previously sterilized and moistened with sterilized distilled water, and incubated for 19 (mofumbo), 20 (jucá), and 25 (aroeira) days in incubators at 28 ± 2 °C. Aspergillus flavus, A. niger, A. ochraceus, Lasiodiplodia sp., Penicillium sp. and Rhizopus sp. are associated with the studied seeds. Captana reduced the incidence of Aspergillus and Penicillium in the seeds, being the most efficient in controlling the microfauna associated with these seeds. Enzimatic II also proved to be an efficient control for Aspergillus spp. There was no interference of the tested products on seed germination.