2020
DOI: 10.1111/1744-7917.12850
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Performance of Bt‐susceptible and ‐heterozygous dual‐gene resistant genotypes of Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) in seed blends of non‐Bt and pyramided Bt maize

Abstract: A seed blend refuge has been implemented in the U.S. Corn Belt for Bt maize resistance management. The fall armyworm, Spodoptera frugiperda (J.E. Smith), is a target pest of Bt maize in the Americas. The larvae of this pest are mobile, which may affect the efficacy of seed blend refuges. In this study, field and greenhouse trials were conducted to determine the performance of Bt-susceptible (aabb) and -heterozygous dualgene-resistant (AaBb) genotypes of S. frugiperda in seed blends of non-Bt and pyramided Bt m… Show more

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Cited by 4 publications
(2 citation statements)
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References 47 publications
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“…In addition, movement of susceptible FAW larvae off non- Bt plants onto neighboring Bt plants reduces refuge effectiveness by reducing the number of susceptible insects produced by refuge plants (Carroll et al 2012 ). Although FAW larvae are highly mobile (Pannuti et al 2016 ; Malaquias et al 2017 ; Sokame et al 2020 ), the use of effective Bt maize pyramids can reduce these risks associated with seed mix refuges for FAW (Bernardi et al 2015b ; Dimase et al 2021 ; Horikoshi et al 2021 ; Tavares et al 2021 ).…”
Section: Insect Resistance Management (Irm) For Bt ...mentioning
confidence: 99%
“…In addition, movement of susceptible FAW larvae off non- Bt plants onto neighboring Bt plants reduces refuge effectiveness by reducing the number of susceptible insects produced by refuge plants (Carroll et al 2012 ). Although FAW larvae are highly mobile (Pannuti et al 2016 ; Malaquias et al 2017 ; Sokame et al 2020 ), the use of effective Bt maize pyramids can reduce these risks associated with seed mix refuges for FAW (Bernardi et al 2015b ; Dimase et al 2021 ; Horikoshi et al 2021 ; Tavares et al 2021 ).…”
Section: Insect Resistance Management (Irm) For Bt ...mentioning
confidence: 99%
“…The control efficiency for FAWs has been hampered due to a lack of species‐specific insecticides and FAWs hiding inside the stem of maize (Yu et al ., 2003; Lv et al ., 2021). However, some new control strategies are under development, such as Bacillus thuringiensis (Bt)‐transgene plants and the introduction of natural enemies (Huang, 2021; Dimase et al ., 2021; Guan et al ., 2021). Nonetheless, there is still an urgent need to develop new methods for managing this pest.…”
Section: Introductionmentioning
confidence: 99%