Nonpreference for Oviposition of Sugarcane Borer (Lepidoptera: Crambidae) in Sugarcane Seedlings Is Influenced by Ripening Group and Plant Age.

Autor:	Sturza VS; Universidade Federal de Pelotas, Programa de Pós-gradução em Fitossanidade, Campus Universitário, Rio Grande do Sul, Brasil., da Cunha US; Universidade Federal de Pelotas, Programa de Pós-gradução em Fitossanidade, Campus Universitário, Rio Grande do Sul, Brasil., Bernardi D; Universidade Federal de Pelotas, Programa de Pós-gradução em Fitossanidade, Campus Universitário, Rio Grande do Sul, Brasil., Greco MGDCE; Universidade Federal de Pelotas, Curso de Biologia, Capão do Leão, Rio Grande do Sul, Brasil., Nava DE; Embrapa Clima Temperado, BR 392, km 78, Pelotas, Rio Grande do Sul, Brasil.
Jazyk:	angličtina
Zdroj:	Environmental entomology [Environ Entomol] 2020 Jun 13; Vol. 49 (3), pp. 692-698.
DOI:	10.1093/ee/nvaa039
Abstrakt:	The sugarcane borer Diatraea saccharalis (Fabricius) (Lepidoptera: Crambidae) is considered the main sugarcane pest in many countries. The use of plant genotypes less preferred by insects are among the alternative methods to control this species which can be used alone or associated with other control methods such as biological control in Integrated Pest Management (IPM) programs. We assessed if the nonpreference for oviposition of D. saccharalis in sugarcane genotypes established by seedlings is different according to ripening group and plant age. For that purpose, four experiments were performed: 1) seedlings of early-ripening genotypes, 2) seedlings of late-ripening genotypes, 3) and mix of early- and late-ripening genotypes, seedlings, and 4) plants. There were least preferred genotypes for oviposition by D. saccharalis among seedlings of early-ripening (RB965902 and RB966928) and late-ripening (RB987935) genotypes. It was also observed when the groups were mixed as seedlings (RB965902) or plants (RB925345). The nonpreference for egg deposition in different ripening groups and plant age might be useful to integrate with other strategies for the management of D. saccharalis. Moreover, results of egg distribution might indicate the likely position of resistance factors on leaves, whether morphological or chemical. (© The Author(s) 2020. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)
Databáze:	MEDLINE
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