EVALUATION OF YIELDGARD TRANSGENIC RESISTANCE FOR CONTROL OF FALL ARMYWORM AND CORN EARWORM (LEPIDOPTERA: NOCTUIDAE) ON CORN

By G. Buntin, R. D. Lee, D. Wilson, R. Mcpherson. 2001

116 citations recorded by the source corpus.

Fall armyworm, Spodoptera frugiperda (J. E. Smith), and corn earworm, Helicoverpa zea Boddie, perennially cause leaf and ear damage to corn in the southeastern USA. Development of transgenic hybrids expressing insecticidal endotoxin from Bacillus thuringiensis (Bt) offers a new approach to managing these insects in field corn. Transgenic Bt hybrids with either the Bt11 or MON810 event, collectively known as YieldGard Technology, were evaluated for control fall armyworm and corn earworm in southern Georgia during 1998, which coincided with a severe outbreak of fall armyworm. YieldGard Bt resistance consistently reduced whorl infestation and damage to low levels and also reduced ear infestations and larval numbers per ear. However, larval establishment did occur on many ears of resistant plants, but once established in ears, larvae of both species developed more slowly and caused much less kernel damage on resistant than susceptible plants. We found no relationship between YieldGard Bt resistance and corn grain aflatoxin concentrations. Yield responses were variable with the prevention of yield loss being proportional to the severity of insect damage. These results indicate that YieldGard resistance is effective in preventing significant losses to field corn by fall armyworm and corn earworm. Further, evaluation under a variety of growing conditions and insect infestation levels is needed to clearly assess the value of YieldGard technology to corn growers in the Southeast.

Subfields: Insect Science, Molecular Biology, Plant Science

View Paper: https://www.semanticscholar.org/paper/d046cd04ee9a0a04db5ff8d6f436eab983b42c41

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Insect Science

1. F. Huang
2. B. Leonard
3. R. Jackson
4. J. Hardke
5. Timothy Daly
6. G. Buntin

In Molecular Biology

1. F. Huang
2. B. Leonard
3. R. Jackson
4. J. Hardke
5. Timothy Daly
6. G. Buntin

In Plant Science

1. Timothy Daly
2. F. Huang
3. G. Buntin

Citations in the corpus

• Fall armyworm [Spodoptera frugiperda (J.E. Smith)] damage in maize: management options for flood-recession cropping smallholder farmers (2019, background): “Data on fall armyworm abundance, infestation and damage levels to maize crop were collected between June and July 2017, when maize crop was at R4 stage, at which severe direct loss of grain can occur (Buntin et al. 2001).”
• Corn Expressing Cry1Ab or Cry1F endotoxin for Fall Armyworm and Corn Earworm (Lepidoptera: Noctuidae) management in Field Corn for Grain Production (2009, background): “In previous studies the MON810 event was effective in preventing whorl damage under large infestations that occurred during a fall armyworm outbreak in 1998 (Buntin et al. 2001) and more moderate infestations in studies in 1999 and 2000 (Buntin et al. 2004).”
• Damage and survivorship of fall armyworm (Lepidoptera: Noctuidae) on transgenic field corn expressing Bacillus thuringiensis Cry proteins ☆ (2011, background): “Previous studies have evaluated the field efficacy of transgenic Bt corn against fall armyworm (Buntin et al., 2000, 2004; Buntin, 2008; Siebert et al., 2008a).”
• Effect of Bacillus thuringiensis Transgenic Corn for Lepidopteran Control on Nontarget Arthropods (2005, background): “The Cry1Ab toxin expressed in the Bt corn usually suppresses H. zea growth and development but only partially prevents kernel damage byH. zea in the corn ears (Buntin et al. 2001, EPA 2001).”