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Survival, Growth, And Behavior Of Helicoverpa Zea (Boddie) And Heliothis Virescens (F.) (Lepidoptera: Noctuidae) On Genetically Engineered Cotton Expressing The Vip3a Insecticidal Protein, Padma Latha Bommireddy
Survival, Growth, And Behavior Of Helicoverpa Zea (Boddie) And Heliothis Virescens (F.) (Lepidoptera: Noctuidae) On Genetically Engineered Cotton Expressing The Vip3a Insecticidal Protein, Padma Latha Bommireddy
LSU Doctoral Dissertations
Larval behavior, survivorship, and injury potential of Helicoverpa zea (Boddie), and tobacco budworm, Heliothis virescens (F.), was evaluated on cotton plants genetically engineered to express Bacillus thuringiensis (Bt) insecticidal proteins, Vip3A and Vip3A +Cry 1Ab (VipCot™). Larvae (2-d-old) of both species were infested on plant terminals of vegetative or flowering stage cotton plants. Regardless of species, more larvae migrated from the plant terminals of Vip3A and VipCot plants compared to larvae infested on a conventional non-Bt cotton line (Coker 312). Larval (2-d-old) survivorship on VipCot™ plant structures was generally lower than that on similar structures of the Vip3A cotton line. …
Biotransformation Of Organic Wood Preservatives By Micro-Organisms, Diana Nasirumbi Obanda
Biotransformation Of Organic Wood Preservatives By Micro-Organisms, Diana Nasirumbi Obanda
LSU Doctoral Dissertations
Wood products are treated with biocides to prevent biodegradation by bacteria, fungi, and insects. Much attention is being directed towards testing of metal-free organic preservative systems. The major disadvantage of organics is that they are biotransformed by micro-organisms in soil and wood. This study explored the biotransformation of the fungicide tebuconazole by a bacteria species (Pseudomonas fluorescens), the mold (Trichoderma harzianum), the white rot fungus (Phanerochaete chrysosporium) and the brown rot (Meruliporia incrassata). After incubation of cultures spiked with tebuconazole, samples were analyzed for chemical remaining and metabolites. M. incrassata, T. harzianum, and the bacterium all cleaved the 1, 2, …