Journal of Economic Entomology (2020) 113, 471-481

From Pestinfo-Wiki
Jump to: navigation, search

M. Coelho, A.F. Godoy, Y.A. Baptista, J.P.F. Bentivenha, A.L. Lourenção, E.L.L. Baldin and A.L. Catchot (2020)
Assessing soybean genotypes for resistance to Helicoverpa armigera (Lepidoptera: Noctuidae)
Journal of Economic Entomology 113 (1), 471-481
Abstract: Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) is an important pest capable of colonizing several species of cultivated plants, including soybean [Glycine max (L.) Merrill]. The primary management strategy for this insect is chemical control and adoption of Bt plants. However, alternative environmentally friendly strategies should be investigated and adopted as available for sustainable management of this insect pest. One potential underutilized method for insect control is plant resistance. The objective of this study was to categorize resistance (antixenosis and antibiosis) of 22 soybean genotypes on H. armigera in a laboratory setting. A preliminary experiment was conducted using soybean leaves and pods to determine the most promising genotypes for resistance. For each selected genotype, we collected biological parameters, leaf intake, and performed confinement tests. The genotypes PI 227687, PI 274453, PI 274454, PI 229358, PI 171451, 'IAC 17', and 'IAC 19' expressed resistance against H. armigera. Each genotype lowered larval survivorship. The genotypes PI 229358, PI 227687, PI 274453, and PI 274454 expressed resistance by prolonging larval development and reducing fifth-instar larvae weight. 'IAC 19' reduced leaf consumption and lowered the weight of fifth-instar larvae. Antixenosis was found in genotypes PI 227687, PI 274454, and 'IAC 19'. These genotypes might be used in breeding programs focusing on soybean resistance to lepidopterans.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): José P.F. Bentivenha, Edson Luiz Lopes Baldin, André Luiz Lourencao

Research topic(s) for pests/diseases/weeds:
resistance/tolerance/defence of host

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Helicoverpa armigera Soybean (Glycine max)
Retrieved from "https://wiki.pestinfo.org/w/index.php?title=Journal_of_Economic_Entomology_(2020)_113,_471-481&oldid=551966"