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Inheritance characteristics of brown patch resistance in tall fescue

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Text
TitleInfo (ID = T-1)
Title
Inheritance characteristics of brown patch resistance in tall fescue
SubTitle
PartName
PartNumber
NonSort
Identifier (displayLabel = ); (invalid = )
ETD_2035
Identifier (type = hdl)
http://hdl.rutgers.edu/1782.2/rucore10001600001.ETD.000051784
Language (objectPart = )
LanguageTerm (authority = ISO639-2); (type = code)
eng
Genre (authority = marcgt)
theses
Subject (ID = SBJ-1); (authority = RUETD)
Topic
Plant Biology
Subject (ID = SBJ-2); (authority = ETD-LCSH)
Topic
Turfgrass patch diseases
Subject (ID = SBJ-3); (authority = ETD-LCSH)
Topic
Tall fescue
Subject (ID = SBJ-4); (authority = ETD-LCSH)
Topic
Rhizoctonia solani
Abstract
Brown patch, caused by Rhizoctonia solani Kühn, is a devastating disease of tall fescue (Festuca arundinacea Schreb.). Developing genetic resistance is a viable long term control strategy; however, the genetic mechanism of brown patch resistance in tall fescue is not known. The objectives for this research were to (i) calculate the broad and narrow-sense heritability for brown patch resistance, (ii) determine the relative importance of additive and non-additive (dominance and epistatic) gene effects for brown patch resistance, (iii) estimate the general and specific combining abilities of tall fescue parents for brown patch resistance, (iv) estimate the minimum number of effective genes involved in brown patch resistance, and (v) develop a genetic linkage map and identify the presence of quantitative trait loci for brown patch resistance in tall fescue.
To complete these objectives, several field trials were conducted to evaluate the resistance of a diverse background of tall fescue genotypes, as well as parents and progeny from controlled crosses after inoculation with R. solani. Expressed Sequence Tags Simple Sequence Repeats (EST-SSRs) along with genomic-SSR markers were used to develop a genetic linkage map of a mapping population derived from a cross between a resistant genotype and a susceptible genotype.
Analysis of the phenotypic data indicated brown patch resistance in tall fescue is heavily influenced by the environment with phenotypic responses displaying a continuous distribution, both characteristics indicative of quantitative inheritance. Additive genetic variance was more important than non-additive genetic variance in brown patch resistance in tall fescue. It was estimated that one to three genes were segregating for resistance in the progeny that were evaluated. A genotypic recurrent selection program would be the most effective for improving brown patch resistance in tall fescue. Molecular marker analysis revealed the presence of two putative quantitative trait loci.
PhysicalDescription
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electronic resource
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x, 135 p. : ill.
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Ph.D.
Note (type = bibliography)
Includes bibliographical references
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by Jonathan Bokmeyer
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Bokmeyer
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Jonathan
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author
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Jonathan Bokmeyer
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Meyer
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William
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chair
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Advisory Committee
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William Meyer
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Bonos
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Stacy
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Advisory Committee
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Stacy Bonos
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Clarke
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Bruce
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internal member
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Advisory Committee
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Bruce Clarke
Name (ID = NAME-5); (type = personal)
NamePart (type = family)
Hurley
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Richard
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outside member
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Advisory Committee
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Richard Hurley
Name (ID = NAME-1); (type = corporate)
NamePart
Rutgers University
Role
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degree grantor
Name (ID = NAME-2); (type = corporate)
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Graduate School - New Brunswick
Role
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school
OriginInfo
DateCreated (point = ); (qualifier = exact)
2009
DateOther (qualifier = exact); (type = degree)
2009-10
Place
PlaceTerm (type = code)
xx
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TitleInfo
Title
Rutgers University Electronic Theses and Dissertations
Identifier (type = RULIB)
ETD
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TitleInfo
Title
Graduate School - New Brunswick Electronic Theses and Dissertations
Identifier (type = local)
rucore19991600001
Location
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NjNbRU
Identifier (type = doi)
doi:10.7282/T3SJ1KTX
Genre (authority = ExL-Esploro)
ETD doctoral
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The author owns the copyright to this work
Copyright
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Copyright protected
Notice
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Availability
Status
Open
Reason
Permission or license
Note
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Bokmeyer
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Jonathan
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DateTime
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Name
Jonathan Bokmeyer
Affiliation
Rutgers University. Graduate School - New Brunswick
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Author Agreement License
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I hereby grant to the Rutgers University Libraries and to my school the non-exclusive right to archive, reproduce and distribute my thesis or dissertation, in whole or in part, and/or my abstract, in whole or in part, in and from an electronic format, subject to the release date subsequently stipulated in this submittal form and approved by my school. I represent and stipulate that the thesis or dissertation and its abstract are my original work, that they do not infringe or violate any rights of others, and that I make these grants as the sole owner of the rights to my thesis or dissertation and its abstract. I represent that I have obtained written permissions, when necessary, from the owner(s) of each third party copyrighted matter to be included in my thesis or dissertation and will supply copies of such upon request by my school. I acknowledge that RU ETD and my school will not distribute my thesis or dissertation or its abstract if, in their reasonable judgment, they believe all such rights have not been secured. I acknowledge that I retain ownership rights to the copyright of my work. I also retain the right to use all or part of this thesis or dissertation in future works, such as articles or books.
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