The status of leaf feeding resistance and oviposition preference ofBusseola fusca(Fuller) (Lepidoptera: Noctuidae) andChilo partellus(Swinhoe) (Lepidoptera: Crambidae) for sweet sorghum (Sorghum bicolor) landraces

Rebe, M; Berg, J. van den; Donaldson, G.

doi:10.1080/09670870310001630405

Cited by 6 publications

(2 citation statements)

References 4 publications

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“…Correlation analysis revealed a strong and negative relationship between trichome density and preference for oviposition, suggesting that trichomes on the leaf surface may have, in part, influenced oviposition preference of the insect. Influence of leaf texture on oviposition by stemborer females has been observed on maize (Van den Berg, ; Rebe et al., ; Calatayud et al., ) and on napier grass (Van den Berg, ). According to Myers (), the presence of trichomes provides structural or chemical resistance, or both as for glandular trichomes, which can repel the attacking insects or arrest their movement.…”

Section: Discussionmentioning

confidence: 99%

Suitability of brachiaria grass as a trap crop for management ofChilo partellus

Cheruiyot

Midega

Berg

et al. 2018

Entomologia Exp Applicata

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The cereal stemborer Chilo partellus (Swinhoe) (Lepidoptera: Crambidae) is a major insect pest of sorghum (Sorghum bicolor L. Moench) and maize (Zea mays L.) in Africa. Trap cropping systems have been shown to be a valuable tool in management of this pest. To optimize trap cropping strategies, an understanding of host‐plant preference for moth oviposition and host suitability for larval survival on potential trap plants is a prerequisite. Therefore, we assessed seven brachiaria accessions (Poaceae) for preference by C. partellus moths and subsequent larval performance. In two‐choice tests with a local open‐pollinated maize variety (cv. Nyamula), significantly higher numbers of eggs were deposited on brachiaria accessions Marandu, Piata, and Xaraes than on maize, whereas fewer eggs were recorded on plants of Mulato II, Mulato I, and Cayman. There was a significant and negative correlation between the trichome density on plant leaves and C. partellus oviposition preference for brachiaria. In addition to poor larval performance on brachiaria, there was no clear ranking in the accessions regarding larval orientation, settling, arrest, and food ingestion and assimilation. First instars did not consume leaf tissues of brachiaria plants but consumed those of maize, which also suffered more stem damage than brachiaria plants. No larvae survived on brachiaria plant tissue for longer than 5 days, whereas 79.2% of the larvae survived on maize. This study highlights the preferential oviposition of C. partellus on brachiaria plants over maize and the negative effects that these accessions have on subsequent larval survival and development. Our findings support the use of brachiaria as a trap crop for management of C. partellus through a push‐pull technology.

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Section: Discussionmentioning

confidence: 99%

Suitability of brachiaria grass as a trap crop for management ofChilo partellus

Cheruiyot

Midega

Berg

et al. 2018

Entomologia Exp Applicata

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“…Insect feeding on sweet sorghum has been documented by several workers over the last 30 years (Brewbaker 1975;Duncan & Gardner 1984;Youm et al 1990;Rebe et al 2004), but prior to the research described below begun in 2010 the most recent work in Florida had been conducted by Anderson & Cherry (1983). Following the suggestion by Cartwright (2008) that increased biofuel production may result in the need for increased pest control in such crops, we conducted field trials at 3 planting dates to identify potential arthropod pests on 18 sweet sorghum cultivars with promising yields for southern Florida.…”

Section: Introductionmentioning

confidence: 99%

Effect of Planting Date and Density on Insect Pests of Sweet Sorghum Grown for Biofuel in Southern Florida

Cherry

Wang

Nuessly

et al. 2013

Journal of Entomological Science

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Influence of Host-Plant Surface Chemicals on the Oviposition of the Cereal Stemborer Busseola Fusca

et al. 2016

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The chemical composition of plant surfaces plays a role in selection of host plants by herbivorous insects. Once the insect reaches the plant, these cues determine host acceptance. Laboratory studies have shown that the stem borer Busseola fusca (Lepidoptera: Noctuidae), an important pest of sorghum and maize in sub-Saharan Africa, is able to differentiate between host and non-host plant species. However, no information is available on the cues used by this insect to seek and accept the host plant. Thus, the role of surface phytochemical stimuli on host selection and oviposition by B. fusca was studied in the laboratory using two host plants, sorghum, Sorghum bicolor, and maize, Zea mays, and one non-host plant, Napier grass, Pennisetum purpureum. The numbers of eggs and egg masses deposited on the three plant species were compared first under no-choice and choice conditions. In both cases, more eggs and egg masses were laid on maize and sorghum than on the non-host. Artificial surrogate stems treated with a water or chloroform surface extract of each plant were then compared with surrogate stems treated with, respectively, water or chloroform as controls, under similar conditions. Surrogate stems treated with plant water extracts did not show an increase in oviposition when compared to controls, indicating that the major compounds in these extracts, i.e., simple sugars and free amino acids, are not significantly responsible for the oviposition preference. By contrast, a chloroform extract of sorghum enhanced oviposition on the surrogate stems compared to the control, while those of maize and Napier grass showed no significant effects. Analysis of the chloroform extract of sorghum showed higher amounts of α-amyrin, ß-amyrin, and n-nonacosane compared to those of maize and Napier grass. A blend of the three chemicals significantly increased oviposition compared to the chloroform-treated control, indicating that these compounds are part of the surface chemical signature of the plant responsible for host recognition and oviposition by B. fusca.

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The status of leaf feeding resistance and oviposition preference ofBusseola fusca(Fuller) (Lepidoptera: Noctuidae) andChilo partellus(Swinhoe) (Lepidoptera: Crambidae) for sweet sorghum (Sorghum bicolor) landraces

Cited by 6 publications

References 4 publications

Suitability of brachiaria grass as a trap crop for management ofChilo partellus

Suitability of brachiaria grass as a trap crop for management ofChilo partellus

Effect of Planting Date and Density on Insect Pests of Sweet Sorghum Grown for Biofuel in Southern Florida

Influence of Host-Plant Surface Chemicals on the Oviposition of the Cereal Stemborer Busseola Fusca

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