Pink Bollworm Egg Infestations and Larval Survival in NuCOTN 33b and Deltapine Cottons in Arizona

Persistent Link:
http://hdl.handle.net/10150/197493
Title:
Pink Bollworm Egg Infestations and Larval Survival in NuCOTN 33b and Deltapine Cottons in Arizona
Author:
Henneberry, T. J.; Forlow Jech, L.; de la Torre, T.; Faulconer, S; Hill, J. J.
Affiliation:
USDA, ARS, Western Cotton Research Laboratory, Phoenix, AZ
Issue Date:
2000
Publisher:
College of Agriculture, University of Arizona (Tucson, AZ)
Journal:
Cotton: A College of Agriculture Report
Abstract:
The gene for the Bacillus thuringiensis var. kurstaki (Berliner) insect toxic protein is a new advance in technology for pink bollworm (PBW), Pectinophora gossypiella (Saunders), control. We conducted studies in 1999 to investigate grower concern for reduced efficacy of NuCOTN 33b (Bt cotton) (Monsanto Company, St Louis, MO) in late-season because of breakdown or non-expression of the toxic protein. We compared the susceptibility of Bt and Deltapine 5415 (Monsanto Company, St Louis, MO) (non-Bt) cotton bolls to PBW at periodic intervals during the first and second cotton fruiting cycles. We placed >200 PBW eggs per boll on the inside surface of bracts of susceptible immature cotton bolls. The artificially infested bolls were later harvested and examined for evidence of PBW infestation. High percentages of both Bt and non-Bt cotton bolls had numerous larval entrance holes in the carpel walls of the bolls. Less than 1% of the Bt cotton bolls and over 70% of the non-Bt cotton bolls were found with living PBW larvae. Bt cotton bolls of the late-season second fruiting cycle were as resistant to PBW infestation as Bt cotton bolls of the first fruiting cycle.
Keywords:
Agriculture -- Arizona; Cotton -- Arizona; Insect investigations
Series/Report no.:
AZ1170

Full metadata record

DC FieldValue Language
dc.titlePink Bollworm Egg Infestations and Larval Survival in NuCOTN 33b and Deltapine Cottons in Arizonaen_US
dc.contributor.authorHenneberry, T. J.en_US
dc.contributor.authorForlow Jech, L.en_US
dc.contributor.authorde la Torre, T.en_US
dc.contributor.authorFaulconer, Sen_US
dc.contributor.authorHill, J. J.en_US
dc.contributor.departmentUSDA, ARS, Western Cotton Research Laboratory, Phoenix, AZen_US
dc.date.issued2000-
dc.publisherCollege of Agriculture, University of Arizona (Tucson, AZ)en_US
dc.identifier.journalCotton: A College of Agriculture Reporten_US
dc.description.abstractThe gene for the Bacillus thuringiensis var. kurstaki (Berliner) insect toxic protein is a new advance in technology for pink bollworm (PBW), Pectinophora gossypiella (Saunders), control. We conducted studies in 1999 to investigate grower concern for reduced efficacy of NuCOTN 33b (Bt cotton) (Monsanto Company, St Louis, MO) in late-season because of breakdown or non-expression of the toxic protein. We compared the susceptibility of Bt and Deltapine 5415 (Monsanto Company, St Louis, MO) (non-Bt) cotton bolls to PBW at periodic intervals during the first and second cotton fruiting cycles. We placed >200 PBW eggs per boll on the inside surface of bracts of susceptible immature cotton bolls. The artificially infested bolls were later harvested and examined for evidence of PBW infestation. High percentages of both Bt and non-Bt cotton bolls had numerous larval entrance holes in the carpel walls of the bolls. Less than 1% of the Bt cotton bolls and over 70% of the non-Bt cotton bolls were found with living PBW larvae. Bt cotton bolls of the late-season second fruiting cycle were as resistant to PBW infestation as Bt cotton bolls of the first fruiting cycle.en_US
dc.subjectAgriculture -- Arizonaen_US
dc.subjectCotton -- Arizonaen_US
dc.subjectInsect investigationsen_US
dc.identifier.urihttp://hdl.handle.net/10150/197493-
dc.relation.ispartofseriesAZ1170en_US
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