| Full text | |
| Author(s): |
Adalgisa Thayne Munhoz
[1]
;
Roberto Venceslau de Carvalho
[2]
;
Pastora Josefina Querales
[3]
;
Fabrício Packer Gonçalves
[4]
;
Luis Eduardo Aranha Camargo
[5]
Total Authors: 5
|
| Affiliation: | [1] Universidade de São Paulo. Escola Superior de Agricultura "Luiz de Queiroz". Departamento de Fitopatologia e Nematologia - Brasil
[2] Dow AgroSciences Industrial Ltda - Brasil
[3] Universidade de São Paulo. Escola Superior de Agricultura "Luiz de Queiroz". Departamento de Fitopatologia e Nematologia - Brasil
[4] Instituto Agronômico do Paraná - Brasil
[5] Universidade de São Paulo. Escola Superior de Agricultura "Luiz de Queiroz". Departamento de Fitopatologia e Nematologia - Brasil
Total Affiliations: 5
|
| Document type: | Journal article |
| Source: | Summa Phytopathologica; v. 41, n. 2, p. 144-148, 2015-06-00. |
| Abstract | |
Maize infection by Fusarium verticillioides, the causal agent of Fusarium ear rot, can result in the production of mycotoxins of the fumonisin group. Genetic resistance is the most effective way to control this disease. Thus, the aim of this study was to evaluate tropical maize inbred lines as potential sources of resistance to F. verticillioides and production of fumonisins. Six maize inbred lines, three previously classified as resistant and three as susceptible to F. verticillioides, were inoculated with the pathogen and subsequently evaluated for ear rot severity, incidence of symptomatic grain and fumonisin concentration. Results showed that the lines R1 and R3 exhibited high resistance to the pathogen infection. However, only R3 was resistant to the accumulation of fumonisins. Therefore, it is suggested that absence of relationship between disease intensity and fumonisin production is inherent to this pathosystem. Thus, asymptomatic grains infected by F. verticillioides cannot be ensured to be free of contamination by fumonisins. (AU) | |