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Evaluating fungicide efficacy, plant varietal resistance and leaf morphology in developing control strategies for basil downy mildew (Peronospora Belbahrii)

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TitleInfo
Title
Evaluating fungicide efficacy, plant varietal resistance and leaf morphology in developing control strategies for basil downy mildew (Peronospora Belbahrii)
Name (type = personal)
NamePart (type = family)
Homa
NamePart (type = given)
Kathryn
NamePart (type = date)
1985-
DisplayForm
Kathryn Homa
Role
RoleTerm (authority = RULIB)
author
Name (type = personal)
NamePart (type = family)
Simon
NamePart (type = given)
James E.
DisplayForm
James E. Simon
Affiliation
Advisory Committee
Role
RoleTerm (authority = RULIB)
chair
Name (type = personal)
NamePart (type = family)
Wyenandt
NamePart (type = given)
Christian A.
DisplayForm
Christian A. Wyenandt
Affiliation
Advisory Committee
Role
RoleTerm (authority = RULIB)
co-chair
Name (type = personal)
NamePart (type = family)
Barney
NamePart (type = given)
William P.
DisplayForm
William P. Barney
Affiliation
Advisory Committee
Role
RoleTerm (authority = RULIB)
outside member
Name (type = corporate)
NamePart
Rutgers University
Role
RoleTerm (authority = RULIB)
degree grantor
Name (type = corporate)
NamePart
Graduate School - New Brunswick
Role
RoleTerm (authority = RULIB)
school
TypeOfResource
Text
Genre (authority = marcgt)
theses
OriginInfo
DateCreated (qualifier = exact)
2013
DateOther (qualifier = exact); (type = degree)
2013-10
Place
PlaceTerm (type = code)
xx
Language
LanguageTerm (authority = ISO639-2b); (type = code)
eng
Abstract (type = abstract)
Sweet basil (Ocimum basilicum) is the most economically-important culinary herb in the U.S. Recently, a new disease, basil downy mildew (BDM) caused by the oomycete pathogen Peronospora belbahrii, was introduced into the U.S. and has caused significant losses in commercial basil production. BDM was first reported in October, 2007 in Florida. Since then, the pathogen has spread across the country, most likely via infested seed and weather patterns. In 2010 and 2011, biological and conventional fungicides were evaluated for the control of BDM using cv. ‘Italian Large Leaf’ basil. In each year, only K-Phite (phosphorous acid, FRAC code 33) provided the best level of disease control. In 2010 and 2011, Ocimum species and varieties including sweet, cinnamon, Thai, citrus, spice and holy basils were evaluated for susceptibility to BDM. In both years, sweet basils were determined to be the most susceptible; cinnamon, clove and Thai types were moderately susceptible; and citrus, spice and holy types were least susceptible to BDM. Stomata length and density were measured on 20 basil species and varieties in 2011. In general, basil species with higher stomatal densities had higher downy mildew incidence. High densities were mainly found in the sweet, cinnamon and clove basils. Species with longer stomatal lengths (the citrus and spice types) generally exhibited lower downy mildew incidence. Holy basil, the least susceptible of all Ocimum spp. evaluated in this study, had the greatest stomatal density and shortest stomatal length. Leaf curvature was measured on 20 basil species and varieties. Some sweet basil varieties with the highest mean BDM incidence also had the greatest downward leaf curvature, while other sweet basil varieties with moderate mean downy mildew incidence had leaves that were nearly flat or curved upward. Holy, citrus and spice basils with low mean BDM incidence had leaves that were nearly flat or curved upward. This suggests that leaf curvature may have a greater impact on sweet basil susceptibility and that other factors contribute to the plant’s relative susceptibility. These leaf characteristics contributing to reduced incidence may be useful in breeding for BDM resistance.
Subject (authority = RUETD)
Topic
Plant Biology
RelatedItem (type = host)
TitleInfo
Title
Rutgers University Electronic Theses and Dissertations
Identifier (type = RULIB)
ETD
Identifier
ETD_5041
PhysicalDescription
Form (authority = gmd)
electronic resource
InternetMediaType
application/pdf
InternetMediaType
text/xml
Extent
xi, 216 p. : ill.
Note (type = degree)
M.S.
Note (type = bibliography)
Includes bibliographical references
Note (type = statement of responsibility)
by Kathryn Homa
Subject (authority = ETD-LCSH)
Topic
Basil--Diseases and pests--Control--United States
Subject (authority = ETD-LCSH)
Topic
Fungicides--Physiological effect
RelatedItem (type = host)
TitleInfo
Title
Graduate School - New Brunswick Electronic Theses and Dissertations
Identifier (type = local)
rucore19991600001
Location
PhysicalLocation (authority = marcorg); (displayLabel = Rutgers, The State University of New Jersey)
NjNbRU
Identifier (type = doi)
doi:10.7282/T35T3HH0
Genre (authority = ExL-Esploro)
ETD graduate
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Rights

RightsDeclaration (ID = rulibRdec0006)
The author owns the copyright to this work.
RightsHolder (type = personal)
Name
FamilyName
Homa
GivenName
Kathryn
Role
Copyright Holder
RightsEvent
Type
Permission or license
DateTime (encoding = w3cdtf); (qualifier = exact); (point = start)
2013-09-24 17:01:12
AssociatedEntity
Name
Kathryn Homa
Role
Copyright holder
Affiliation
Rutgers University. Graduate School - New Brunswick
AssociatedObject
Type
License
Name
Author Agreement License
Detail
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.
RightsEvent
DateTime (encoding = w3cdtf); (qualifier = exact); (point = start)
2013-10-31
DateTime (encoding = w3cdtf); (qualifier = exact); (point = end)
2014-05-02
Type
Embargo
Detail
Access to this PDF has been restricted at the author's request. It will be publicly available after May 2nd, 2014.
Copyright
Status
Copyright protected
Availability
Status
Open
Reason
Permission or license
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RULTechMD (ID = TECHNICAL1)
ContentModel
ETD
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windows xp
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