Variation among irginia Market-Type Peanut (Arachis hypogaea) Genotypes in Susceptibility to thrips (Thysanopetera: Thripidae) Vectored Tomato Spotted Wilt Virus

Show simple item record

dc.contributor.advisor Tom G. Isleib, Committee Member en_US
dc.contributor.advisor Barbara B. Shew, Committee Member en_US
dc.contributor.advisor George G. Kennedy, Committee Member en_US
dc.contributor.advisor Rick L. Brandenburg, Committee Chair en_US
dc.contributor.author Riniker, Steven Douglas en_US
dc.date.accessioned 2010-04-02T18:01:43Z
dc.date.available 2010-04-02T18:01:43Z
dc.date.issued 2007-03-15 en_US
dc.identifier.other etd-10302006-143811 en_US
dc.identifier.uri http://www.lib.ncsu.edu/resolver/1840.16/1180
dc.description.abstract Tomato spotted wilt virus (TSWV), a thrips-vectored tospovirus remains one of one of North Carolina's most critical pathogens of peanut (Arachis hypogaea). Development of cultivars with resistance to TSWV remains one of the most promising methods to manage the disease. 32 genotypes of virgina market-type peanut were monitored in the field plots for TSWV incidence and severity during 2004 and 2005. Cultivar Gregory had higher adult density then all other genotypes, with genotypes N01057 and N03054E having the least. Genotype NO3036EJ had the greatest TSWV incidence but did not differ significantly from cultivars Gregory or Perry. Genotype N00033 had the least TSWV incidence and differed significantly from both Gregory and Perry. The occurrence of late-season chlorosis (PYD) in North Carolina was confirmed to be highly associated with TSWV infection. Genotype N0205ol (9) had the greatest incidence of PYD, but did not differ significantly from cultivars Gregory or Perry. Genotypes N03023EF and N01083 had the least PYD incidence and differed significantly from both cultivars. TSWV-infected but asymptomatic plants were found in greater abundance then TSWV-infected and symptomatic plants for many genotypes. Genotype N03036EJ had the greatest proportion of infected but asymptomatic plants and differed significantly from Gregory. Genotype N03054E had the least number of infected but asymptomatic plants and differed significantly from Perry but was not different from Gregory. Cultivar NC-V11 had significantly more thrips feeding injury and greater adult density than Perry. No correlation was found between thrips feeding damage or densities and TSWV incidence, PYD incidence, or the number of infected but asymptomatic plants. No significant differences were detected among genotypes for thrips damage ratings or virus severity ratings. en_US
dc.rights I hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dis sertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to NC State University or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report. en_US
dc.subject Peanut genotypes en_US
dc.subject TSWV en_US
dc.subject tomato spotted wilt virus en_US
dc.subject peanut en_US
dc.subject thrips en_US
dc.subject F. Fucsa en_US
dc.subject Frankliniella fusca en_US
dc.subject peanut yellowing death en_US
dc.title Variation among irginia Market-Type Peanut (Arachis hypogaea) Genotypes in Susceptibility to thrips (Thysanopetera: Thripidae) Vectored Tomato Spotted Wilt Virus en_US
dc.degree.name MS en_US
dc.degree.level thesis en_US
dc.degree.discipline Entomology en_US


Files in this item

Files Size Format View
etd.pdf 569.5Kb PDF View/Open

This item appears in the following Collection(s)

Show simple item record