Foliar resistance to fall armyworm in corn germplasm lines that confer resistance to root- and ear-feeding insects

Xinzhi Ni, Yigen Chen, Bruce E. Hibbard, Jeffrey P. Wilson, W. Paul Williams, G. David Buntin, John R. Ruberson, Xianchun Li

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

A holistic approach to developing new corn germplasm that confers multiple insect resistance in various plant tissues at different growth stages was examined. Eight corn germplasm lines were examined for their foliar resistance to fall armyworm [Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae)] and natural enemy attraction at V6V8 (or 68 leaf) stages in 2008 and 2009. Four corn germplasm lines with known levels of resistance to root- and ear-feeding insects ['CRW3(S1)C6', 'B37*H84', 'SIM6' and 'EPM6'], and four germplasm entries with different levels of S. frugiperda resistance ('Mp708', 'Ab24E', 'FAW7061' and 'FAW7111') were evaluated in the study. All plants were manually infested with 1520 neonate S. frugiperda larvae per plant, and injury was rated 7 and 14 d after infestation. Based on cluster analysis of S. frugiperda injury rating and predator survey data, 'Mp708' and 'FAW7061' were the most resistant, whereas 'Ab24E' and 'EPM6' were the most susceptible to fall armyworm feeding. The western corn rootworm-resistant 'CRW3(S1)C6' showed resistance to S. frugiperda feeding. Surveys for the diversity and abundance of predators of S. frugiperda in each experimental plot were also conducted 7 d after infestation. 'CRW3(S1)C6' and 'Ab24E' had the highest and lowest predator abundance, respectively. However, there was no direct correlation between S. frugiperda injury ratings and predator abundance. The current study demonstrated the feasibility of developing foliage-, root-, and ear-feeding insect-resistant germplasm covering multiple corn growth stages. In addition, the possibility of utilizing plant volatiles to attract predators, and reduce pest populations and crop damage is discussed.

Original languageEnglish (US)
Pages (from-to)971-981
Number of pages11
JournalFlorida Entomologist
Volume94
Issue number4
DOIs
StatePublished - Dec 2011

Fingerprint

Spodoptera frugiperda
germplasm
ears
maize
predator
insect
insects
corn
predators
crop damage
holistic approach
neonate
natural enemy
foliage
cluster analysis
developmental stages
Diabrotica virgifera virgifera
larva
Noctuidae
natural enemies

Keywords

  • and ear-feeding insect resistance
  • Field screening
  • foliage-
  • multiple insect resistance
  • predator attraction
  • root-

ASJC Scopus subject areas

  • Insect Science
  • Ecology, Evolution, Behavior and Systematics

Cite this

Foliar resistance to fall armyworm in corn germplasm lines that confer resistance to root- and ear-feeding insects. / Ni, Xinzhi; Chen, Yigen; Hibbard, Bruce E.; Wilson, Jeffrey P.; Williams, W. Paul; Buntin, G. David; Ruberson, John R.; Li, Xianchun.

In: Florida Entomologist, Vol. 94, No. 4, 12.2011, p. 971-981.

Research output: Contribution to journalArticle

Ni, X, Chen, Y, Hibbard, BE, Wilson, JP, Williams, WP, Buntin, GD, Ruberson, JR & Li, X 2011, 'Foliar resistance to fall armyworm in corn germplasm lines that confer resistance to root- and ear-feeding insects', Florida Entomologist, vol. 94, no. 4, pp. 971-981. https://doi.org/10.1653/024.094.0434
Ni, Xinzhi ; Chen, Yigen ; Hibbard, Bruce E. ; Wilson, Jeffrey P. ; Williams, W. Paul ; Buntin, G. David ; Ruberson, John R. ; Li, Xianchun. / Foliar resistance to fall armyworm in corn germplasm lines that confer resistance to root- and ear-feeding insects. In: Florida Entomologist. 2011 ; Vol. 94, No. 4. pp. 971-981.
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