Introgression of the Genes for Sesquiterpene Carboxylic Acid Synthesis From a Wild Tomato, Lycopersicon Hirsutum, Into the Cultivated Tomato for Increased Host -Plant Resistance to Insect Pests
Frelichowski, James Edward, Jr
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https://hdl.handle.net/2142/83081
Description
Title
Introgression of the Genes for Sesquiterpene Carboxylic Acid Synthesis From a Wild Tomato, Lycopersicon Hirsutum, Into the Cultivated Tomato for Increased Host -Plant Resistance to Insect Pests
Author(s)
Frelichowski, James Edward, Jr
Issue Date
2002
Doctoral Committee Chair(s)
Juvik, John A.
Department of Study
Natural Resrouces and Environmental Sciences
Discipline
Natural Resrouces and Environmental Sciences
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Agriculture, Plant Pathology
Language
eng
Abstract
F2 and backcross progeny were assayed for the presence of polymorphic molecular markers using the Amplified Fragment Length Polymorphism (AFLP) protocol. Progeny of each generation were separated into high and low classes for SCA levels and the DNA combined of individual plants within the phenotypic classes. Bulk segregant analysis was used to identify polymorphic AFLP markers present in LA 1777 and absent in 'Chico III' and LA 1033. Comparisons of these polymorphic AFLP markers between high-SCA bulks and the zero-SCA plants ('Chico III' and LA 1033) revealed 10 AFLP markers associated with presence of SCA. Comparisons of the high-SCA bulks with a set of low-SCA bulks revealed one marker associated with high levels of SCA synthesis. Comparisons of the markers with a TA517 line that produces sesquiterpene precursors to SCA revealed three markers putatively associated with synthesis of the olefin to SCA and six putatively associated with modifications to SCA.
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