Volume 13, Issue 4 (2024)                   JCP 2024, 13(4): 321-332 | Back to browse issues page

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Dos Santos Melo A, Santos da Silva S A, Pereira da Silva J W, Almeida Oliveira P H, De La Pava Suárez N, Costa Calvet E et al . Induced resistance to Crinocerus sanctus (Hemiptera: Coreidae) in cowpea through silicon application. JCP 2024; 13 (4) :321-332
URL: http://jcp.modares.ac.ir/article-3-75386-en.html
Induced resistance to Crinocerus sanctus (Hemiptera: Coreidae) in cowpea through silicon application
André Dos Santos Melo 1, Sandra Andréa Santos da Silva2 , José Wilson Pereira da Silva2 , Pablo Henrique Almeida Oliveira3 , Nataly De La Pava Suárez4 , Erica Costa Calvet5 , João Everthon Silva Ribeiro3
1- Department of Agronomy-Entomology, Universidade Federal Rural de Pernambuco, Rua Dom Manuel de Medeiros, s/n-Dois Irmãos, Recife-PE, 52171-900, Brazil. , andremello004@gmail.com
2- Department of Agronomy-Universidade Federal do Pará, Rua Coronel José Porfírio, 2515, Anexo II, São Sebastião,-Altamira-PA, 68372040, Brazil.
3- Department of Agronomic and Forest Sciences, Universidade Federal Rural do Semi-Árido, R. Francisco Mota, 572-Pres. Costa e Silva, Mossoró-RN, 59625-900, Brazil.
4- Department of Agronomy-Universidad del Magdalena, Dirección Carrera 32, 22–08 Santa Marta, 470004, Colombia.
5- Department of Plant Science-Plant Health Sector, Universidade Federal do Ceará. Rua Campus do Pici S/N-Bloco 806-Campus do Pici-CEP 60440-554-Fortaleza–CE.
Abstract:   (217 Views)
Silicon (Si) is a mineral known to enhance pest resistance in plants belonging to the Poaceae family. However, studies suggest potential benefits of Si in other botanical families such as Fabaceae. Thus, our hypothesis that Si applied in the form of 94.6% silicate would increase cowpea resistance to the stink bug Crinocerus sanctus (Fabricius), in addition to benefiting the physiological aspects of the plant. This study evaluated the vegetative development, total chlorophyll content, yield parameters, and resistance of two cowpea varieties against C. sanctus when sprayed with different doses of Si. Two different doses of Si were administered: the recommended manufacturer's dose (1 g L-1) and a doubled dose (2 g L-1), in addition to a control group (0 g L-1). Plants treated with Si exhibited lower insect density and fewer pods with signs of injury. The peak insect population was observed at the onset of the cowpea's reproductive stage. Furthermore, the chlorophyll content increased from 42 mg m-2 (in the control group) to 48 mg m-2 in Si-treated plants. While the plant height and yield parameters of cowpea remained unaffected by Si application, there was a reduction in the dry mass of the aerial parts in Si-treated crops. This study demonstrated that cowpea can accumulate Si, and its application can enhance resistance against C. sanctus.



 
Keywords: Cowpea resistance, red stink bug, silicon application, Vigna unguiculata, yield parameters
Full-Text [PDF 653 kb]   (119 Downloads)    
Article Type: Original Research | Subject: Insect Pest control (Chemical, Botanical and other Control Measures)
Received: 2024/05/31 | Accepted: 2024/12/11 | Published: 2024/12/23
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