Please use this identifier to cite or link to this item: http://hdl.handle.net/1/3582
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dc.contributor.authorDillon, Martin-
dc.date.accessioned2015-12-11T01:31:38Z-
dc.date.available2015-12-11T01:31:38Z-
dc.date.issued2002-06-30-
dc.identifier.urihttp://hdl.handle.net/1/3582-
dc.description.abstractINGARD® Cotton varieties express Bt toxin in all plant parts except for the flowers. Because Helicoverpa moths frequently target flower buds and flowers as oviposition sites, a proportion of their neonate larvae may establish themselves on or in the flowers in a Bt-free location on the cotton plant. This may allow them to develop to a size at which they are more tolerant of Bt toxin on other plant parts. Such larvae may subsequently be capable of damaging fruiting structures and other plant parts before they are affected by the Bt toxin. Honey bees are known to visit cotton flowers, and this project set out to determine whether they may provide an efficient means of depositing HNPV (Heliothis nuclear polyhedrosis virus) propagules directly into cotton flowers, and thereby help to eliminate an otherwise safe haven on INGARD® plants. Honey bee hives can be readily modified to disseminate virus or other microbial biocontrol agents, and the hives are easily transported to required areas. Honey bees from such hives have been shown to successfully act as vectors of HNPV against Helicoverpa zea on Crimson Clover Flowers (Gross et al. 1994), and as vectors of Bt for control of Banded Sunflower Moth on Sunflowers (Jyoti and Brewer 1999). Results from both these studies were impressive. For example mortality of H.zea larvae, when fed crimson clover flowers that had been visited by bees, increased from 12% in Control fields to over 80% in fields treated with HNPV (Gross et al. 1994).en_US
dc.description.sponsorshipCRDCen_US
dc.publisherCSIRO Entomologyen_US
dc.relation.ispartofseries;CSE95C-
dc.subjecthoney beesen_US
dc.subjectBt toxinen_US
dc.subjectcotton flowersen_US
dc.subjectHeliothis nuclear polyhedrosis virus (HNPV)en_US
dc.subjectmicrobial biocontrol agentsen_US
dc.subjectfruit structureen_US
dc.titleHoneybee dissemination of Heliothis NPV onto cotton flowers.en_US
dc.typeTechnical Reporten_US
Appears in Collections:2002 Final Reports

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