Fecha/hora: 07/06/2024 23:11:42

Biblioteca(s): 	INIA Las Brujas.	
Tipo de la producción científica: 	Artículos en Revistas Indexadas Internacionales	
Circulación/Nivel: 	Internacional - --	
Fecha corriente: 	30/01/2020	
Fecha de la última actualización: 	30/01/2020	
Autoria: 	CUTI, L.; MURARO, D.S.; SILVA, V.A.; KASPARY, T. E.; BASSO, C.J.; ROGGIA, S.	
Afiliación: 	L. CUTI, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; D. S. MURARO, Universidade de São Paulo, Piracicaba, SP, Brazil; V. A. SILVA, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil; TIAGO EDU KASPARY, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; C. J. BASSO, Universidade Federal de Santa Maria, Frederico Westphalen, RS, Brazil; S. ROGGIA, Empresa Brasileira de Pesquisa Agropecuária, Embrapa Soja, Londrina, PR, Brazil.	
Título: 	Leaf consumption and preference to conyza sp., conventional and bt soybean by helicoverpa armigera. [Consumo foliar e preferência alimentar de conyza sp., soja convencional e bt por helicoverpa armigera.]	
Año de publicación: 	2019	
Fuente/Imprenta: 	Planta Daninha, 2019, Volume 37, Article number e019211566. OPEN ACCESS. Doi: http://dx.doi.org/10.1590/s0100-83582019370100123	
ISSN: 	0100-8358	
DOI: 	10.1590/s0100-83582019370100123	
Idioma: 	Inglés	
Notas: 	Article history: Received: August 13, 2018 / Accepted: February 27, 2019.	
Contenido: 	ABSTRACT.
Helicoverpa armigera caterpillars are polyphagous and exhibit high migratory potential. Given the traits of this pest, alternative hosts located in or near the crop stand may support the survival and permanence of H. armigera in the field. The aim of this study was to investigate Conyza sp. as a food source for H. armigera caterpillars in scenarios with conventional and Bt soybean. Two experiments were conducted in biochemical oxygen demand incubators. The first assessed consumption of conventional soybean, Bt soybean and Conyza sp. leaves by 3rd and 5th instar caterpillars, with no choice given (no-choice test). The second test evaluated the food preference of 3rd instar H. armigera larvae, with two choices given (dual-choice test). Fifth instar larvae favored Conyza sp. leaves to Bt soybean, but preferred conventional soybean to both of these options. The survival of 3rd instar caterpillars did not differ statistically regardless of the plant species used as a food source. Fifth instar larvae fed Bt soybean exhibited lower survival rates when compared to Conyza sp. and conventional soybean. In dual-choice test arenas, soybean leaf consumption was superior to Conyza sp. Conventional soybean consumption was also greater when offered in conjunction with Bt soybean. Caterpillars offered Conyza sp. and Bt soybean leaves only consumed the weed species. Conyza sp. plants can serve as a food source for H. armigera larvae, which showed a preference for Conyza sp. leaves to Bt soybean. © 2019, Sociedade Brasileira da Ciencia das Plantas Daninha. All rights reserved.	
Palabras-Clave: 	Alternative host; Hospedeiro alternativo; Planta daninha; Weed.	
Thesagro: 	GLYCINE MAX.	
Categoría del tema: 	A50 Investigación agraria	
URL: 	http://www.scielo.br/pdf/pd/v37/0100-8358-PD-37-e019211566.pdf	
Registro original: 	INIA Las Brujas (LB)	
Ejemplares: 	LB - (102139-1) - PXI - AP - DD - PP/PLANTA DANINHA/2019 -  -  - DIS