Resistance in Rice to Tibraca limbativentris (Hemiptera: Pentatomidae) Influenced by Plant Silicon Content

Tibraca limbativentris Stål (Hemiptera: Pentatomidae) is a major pest causing economic losses to rice cultivation in Brazil. The objectives of this work were to assess different sources of silicon in the induction of plant resistance, to examine the interaction of rice varieties with silicon-based r...

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Bibliographic Details
Published in:The Florida entomologist 2018-12, Vol.101 (4), p.587-591
Main Authors: França, Lincoln Luis, Dierings, Cássio Antonio, Almeida, André Cirilo de Sousa, Araújo, Marcio da Silva, Heinrichs, Elvis Arden, Silva, Anderson Rodrigo da, Barrigossi, José Alexandre Freitas, Jesus, Flávio Gonçalves de
Format: Article
Language:English
Subjects:
Biology
Body surface area
Calcium
chinche de arroz
Chlorophyll
Chlorophylls
Cultivars
Cultivation
Damage
Economic impact
Economics
Entomology
Grain cultivation
Hemiptera
Herbivores
induced resistance
Insect pests
Insecticides
Insects
Instars
Magnesium
Oryza
Oryza sativa
Parameters
Pentatomidae
Plant resistance
plant resistance to insects
planta resistencia a insectos
RESEARCH PAPERS
resistencia inducida
Rice
rice stalk stink bug
Silica
Silicates
Silicon
Silicon compounds
Stems
Stink bugs
Sugarcane
Surface area
Surface science
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Summary:Tibraca limbativentris Stål (Hemiptera: Pentatomidae) is a major pest causing economic losses to rice cultivation in Brazil. The objectives of this work were to assess different sources of silicon in the induction of plant resistance, to examine the interaction of rice varieties with silicon-based resistance, and to determine the effects of varieties and silicon on stink bug biology. The interaction of rice cultivars BRS Esmeralda, IRGA 429 (widely cultivated in Brazil), and Canela de Ferro (a resistant cultivar), and 2 sources of silicon (K silicate, and Ca + Mg silicate) were studied. Plant parameters measured were percentage of damaged stems, chlorophyll content at 50 and 65 d after emergence, and silicon content. Insect biological parameters measured were the number of live insects, total dry mass, individual insect dry mass, total body surface area, and individual insect body surface area. The interaction between BRS Esmeralda with K silicate and Ca + Mg silicate provided greater plant silicon content and resulted in a lower level of stink bug-damaged stems. These results show that it is possible to increase resistance in rice plants susceptible to T. limbativentris by increasing silicon content.
ISSN:0015-4040
1938-5102
DOI:10.1653/024.101.0419