Collection and Analysis of Volatiles of Various Cultivated Sunflower, Helianthus Annuus, (Asteraceae) Germplasm and Investigation of Some Aspects of Host Selection in Adult Red Sunflower Seed Weevil, Smicronyx Fulvus L., (Coleoptera Curculionidae)

dc.contributor.authorLokumana, Charithra Rathnamali
dc.date.accessioned2018-07-16T16:41:07Z
dc.date.available2018-07-16T16:41:07Z
dc.date.issued2017en_US
dc.description.abstractPlants of sunflower germplasm putatively resistant or susceptible to the red sunflower seed weevil, Smicronyx fulvus (Coleoptera: Curculionidae) were used to test the hypothesis that the volatile composition of these two types are different and may influence acceptance/rejection of sunflower germpalsm by S. fulvus. At least 13 volatile terpenoids were released by the different plant lines, with some varying in concentration according to plant line, head maturity, and time of day. Comparison between resistant and susceptible plant lines showed differences in concentrations of less abundant compounds (3E)-4,8-dimethyl-1-3-7-nonatriene, α-copaene, bornyl acetate, β-elemene, β-selinene and germacrene-D, indicating that, one or more of these compounds may be useful markers for resistance/susceptibility to S. fulvus. In behavioral binary choice bioassays, S. fulvus adults were attracted to sunflower heads, preferring R5.5 over R4 and R6 heads, and susceptible to resistant plants. Video recordings indicated both volatile and contact chemicals may be involved in host acceptance/rejection.en_US
dc.description.sponsorshipUSDA-ARSen_US
dc.identifier.urihttps://hdl.handle.net/10365/28644
dc.publisherNorth Dakota State Universityen_US
dc.rightsNDSU policy 190.6.2
dc.rights.urihttps://www.ndsu.edu/fileadmin/policy/190.pdf
dc.titleCollection and Analysis of Volatiles of Various Cultivated Sunflower, Helianthus Annuus, (Asteraceae) Germplasm and Investigation of Some Aspects of Host Selection in Adult Red Sunflower Seed Weevil, Smicronyx Fulvus L., (Coleoptera Curculionidae)en_US
dc.typeThesisen_US
ndsu.advisorFoster, Stephen P.
ndsu.collegeAgriculture, Food Systems and Natural Resourcesen_US
ndsu.degreeMaster of Science (MS)en_US
ndsu.departmentEntomologyen_US
ndsu.departmentSchool of Natural Resource Sciencesen_US
ndsu.programEntomologyen_US

Files

Original bundle

Now showing 1 - 1 of 1
No Thumbnail Available
Name:
Collection and Analysis of Volatiles of Various Cultivated Sunflower, Helianthus Annuus, (Asteraceae) Germplasm and Investigation of Some Aspects of Host Sele.pdf
Size:
2.96 MB
Format:
Adobe Portable Document Format
Description:

License bundle

Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.63 KB
Format:
Item-specific license agreed to upon submission
Description: