Data/hora: 09/06/2024 14:32:39

Provedor de dados: | 53
País: | Brazil
Título: | Development of mango wilt in mango cultivars submitted to salt stress
Autores: | Vieccelli,Juliana Cristina; Araujo,Leonardo; Lopes,Ueder Pedro; Siqueira,Dalmo Lopes de; Rodrigues,Fabrício de Ávila.
Data: | 2017-07-01
Ano: | 2017
Palavras-chave: | Ceratocystis fimbriata; Mangifera indica; Resistance; Salinity; Vascular pathogen.
Resumo: | ABSTRACT Mango wilt, caused by Ceratocystis fimbriata, is one of the most important diseases affecting mango yield worldwide. Salt stress can affect host defense responses against pathogens infection. The aim of this study was to evaluate the development of mango wilt in 2 mango cultivars submitted to salt stress. Mango plants from cultivars Tommy Atkins and Ubá, considered to be moderately resistant and resistant to mango wilt, respectively, were grown in plastic pots which contained 20 kg of washed sand and daily irrigated with 3 L of a modified Hoagland solution during 40 days before being submitted to salinization. For this process of salinization, the plants received nutrient solution containing 0, 30, 60, and 90 mmol∙L–1 of sodium chloride (NaCl) during 50 days. At the 50th day, the plants were inoculated with C. fimbriata, and disease development was evaluated at 42 days after inoculation. During this period, the plants were also submitted to salinization. After disease evaluation, the stems of plants from each treatment were collected to determine the concentrations of chlorine (Cl) and sodium (Na). Plants from the 2 cultivars showed reduced mango wilt symptoms as the NaCl doses increased from 0 to 90 mmol∙L–1. Plants submitted to the highest NaCl doses showed greater Cl and Na concentrations on the stem. In conclusion, the resistance of plants against C. fimbriata infection can be potentiated when submitted to salt stress regardless of their basal level of resistance to mango wilt.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000300372
Editor: | Instituto Agronômico de Campinas
Relação: | 10.1590/1678-4499.224
Formato: | text/html
Fonte: | Bragantia  v.76 n.3 2017
Fonte: | info:eu-repo/semantics/openAccess