Show simple item record

dc.contributor.authorVarella, Andrea C.
dc.contributor.authorWeaver, David K.
dc.contributor.authorCook, Jason P.
dc.contributor.authorBlake, Nancy K.
dc.contributor.authorHofland, Megan L.
dc.contributor.authorLamb, Peggy F.
dc.contributor.authorTalbert, Luther E.
dc.identifier.citationVarella, Andrea C. , David K. Weaver, Jason P. Cook, Nancy K. Blake, Megan L. Hofland, Peggy F. Lamb, and Luther E. Talbert. "Characterization of resistance to the wheat stem sawfly in spring wheat landrace accessions from targeted geographic regions of the world." Euphytica 213, no. 7 (July 2017): 1-11. DOI:
dc.description.abstractPlant landraces have long been recognized as potential gene pools for biotic and abiotic stress-related genes. This research used spring wheat landrace accessions to identify new sources of resistance to the wheat stem sawfly (WSS) (Cephus cinctus Norton), an important insect pest of wheat in the northern Great Plains of North America. Screening efforts targeted 1409 accessions from six geographical areas of the world where other species of grain sawflies are endemic or where a high frequency of accessions possesses the resistance characteristic of solid stems. Resistance was observed in approximately 14% of accessions. Half of the lines displayed both antixenosis and antibiosis types of resistance. Among the resistant accessions, 41% had solid or semi-solid stems. Molecular genetic screening for haplotypes at the solid stem QTL, Qss.msub.3BL, showed that 15% of lines shared the haplotype derived from \'S-615\', the original donor of the solid stem trait to North American germplasm. Other haplotypes associated with solid stems were also observed. Haplotype diversity was greater in the center of origin of wheat. Evaluation of a representative set of resistant landrace accessions in replicated field trials at four locations over a three year period identified accessions with potential genes for reduced WSS infestation, increased WSS mortality, and increased indirect defense via parasitoids. Exploitation of distinct types of plant defense will expand the genetic diversity for WSS resistance currently present in elite breeding lines.en_US
dc.description.sponsorshipUSDA-NIFA (2017-67007-25939, 2013-67013-21106); Montana Wheat and Barley Committeeen_US
dc.titleCharacterization of resistance to the wheat stem sawfly in spring wheat landrace accessions from targeted geographic regions of the worlden_US
mus.identifier.categoryLife Sciences & Earth Sciencesen_US
mus.relation.collegeCollege of Agricultureen_US
mus.relation.departmentLand Resources & Environmental Sciences.en_US
mus.relation.departmentPlant Sciences & Plant Pathology.en_US
mus.relation.departmentResearch Centers.en_US
mus.relation.universityMontana State University - Bozemanen_US
mus.contributor.orcidWeaver, David K.|0000-0002-5273-3738en_US

Files in this item


This item appears in the following Collection(s)

Show simple item record

MSU uses DSpace software, copyright © 2002-2017  Duraspace. For library collections that are not accessible, we are committed to providing reasonable accommodations and timely access to users with disabilities. For assistance, please submit an accessibility request for library material.