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Chilean Journal of Agricultural Research
Instituto de Investigaciones Agropecuarias, INIA
ISSN: 0718-5820
EISSN: 0718-5839
Vol. 73, No. 4, 2013, pp. 351-357
Bioline Code: cj13051
Full paper language: English
Document type: Research Article
Document available free of charge

Chilean Journal of Agricultural Research, Vol. 73, No. 4, 2013, pp. 351-357

 en Feeding preference of Nezara viridula check for this species in other resources (Hemiptera: Pentatomidae) and attractiveness of soybean genotypes
de Santana Souza, Efrain; Lopes Baldin, Edson Luiz; Gonçalves Franco da Silva, José Paulo & Lourenção, André Luiz

Abstract

Nezara viridula check for this species in other resources (L.) (Hemiptera: Pentatomidae) is a cosmopolitan insect that causes economic damages to several cultures, in particular soybeans ( Glycine max check for this species in other resources [L.] Merr.) Among the techniques that involve Integrated Pest Management, the resistance of plants is pointed as a tool of great value and can contribute to the reduction of populations of insects. The feeding preferences of adults of southern green stink bug (N. viridula), and the attractiveness of soybean genotypes were evaluated under laboratory conditions to detect the most resistant material against attack from this insect. A choice test, using mature grains and green pods of the genotypes was carried out, in which the number of individuals attracted in different periods was counted. Feeding preference was evaluated in the choice tests using green pods and the number of pricks and the average time spent feeding by pricks were evaluated. In addition, texture and trichome density in the green pods were evaluated. The mature grains of ‘TMG 117RR’ and ‘TMG 121RR’ were less attractive to the adults of N. viridula. Regarding the green pods, ‘IAC 17’ and PI 227687 were less attractive; ‘IAC 17’ and ‘IAC PL1’ were less consumed, indicating the feeding non-preference as a resistance mechanism. ‘IAC 17’, ‘TMG-117RR’ and PI 227687 presented high levels of trichome density, and in ‘IAC 17’ this morphological characteristic was considered to be the main resistance factor against N. viridula. These results may be useful for breeding programs that focus on the resistance of soybeans to insects.

Keywords
Antixenosis; Glycine max; host plant resistance; Southern green stink bug

 
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