Reprinted from Crop Science
Vol. 26. Nov.-Dec. 1986.r266-1267
REGISTRATION OF KS8SWGRCO1HESSIAN FLY.
RESISTANT HARD RED WINTER WHEAT
GERMPLASM
KS85WGRCOI(Reg.no. GP-278),P1499691,
a Hessianflyresistant,hard red winter wheal (Triticum aesttvum L.)
gerrnplasmwas developedcooperativelyby the KansasAgricultural ExperimentStation,the USDA-ARS, and the Wheat
GeneticsResourceCenter (WGRC), KansasState University. It was releasedas germplasmin 1985.
KS85WGRCOIis homozygousfor resistanceto Hessian
fly lMayetiola destructor(Say)1.The resistance,conditioned
by a singledominant gene,is derived from an Aegilopssquarrosa (7. tauschii)accession,T A1644,collectedin Iran. The
geneis independentof H13, the only other named Hessian
fly-resistancegene known to be in the D-genome,and is
effectiveagainstthe known biotypesof the Hessianfly (1).
KSSSWGRCOIis a bulk of sevenF5-derivedF, lines from
the crossTAl644l'Newon'//'Wichita'. The crossTA1644l
Newton was made using an embryo rescuetechnique,and
the self-sterileF, plants were crossedwith Wichita. A plant
from the final crosshad a chromosomenumber of 2n:49
and was fertile. ResultingF, plantswerescreenedusingbiotype D ofHessianfly, and four resistantplants(83-571,83573,83-575,and 83-577)were selfed.Wheat-like,highly fertile progeniescarrying42chromosomeswereadvanced.Seven
Fr-derived Fofamilies were homozygousresistantto biotype
D. Selfed seed from these seven lines was bulked to form
KS85WGRCol.
Based on replicated field evaluation of sibling lines,
KS85WGRCOl is heterogeneous
for charactersother than
Hessian fly resistance.It has averagedthe same or slightly
earlier maturity than Newton, and is lO-cm taller. It is heterogeneousfor soilbornemosaicvirus resistance,and has a
reaction to leaf diseasessimilar to that of Newton. It is cytogenetically stable.
Small quantitiesof seedof KS85WGRCOl are available
upon written request. It is requestedthat appropriate recognition of the source be given when this germplasm contributes to researchor development of new cultivars. Seed
stocksare maintained by the Wheat GeneticsResourceCenter, Department of Plant Pathology, Throckmorton Hall,
KansasStateUniversity, Manhattan, KS 66506.
B. S. Grr-r-,J. H. H.qrcHerr, T. S. Cox, W. J. Rnupp, R. G.
Senns,T. J. MnnrlN (2)
and Notes
References
I Harchetl,J H., and B S. Gill. | 983-Expressionand geneticsof resistance
to Hessianfly in Tritrcumtauschii(Coss)Schmal.p E07-81l- /n S. Sakamoto (ed.) Proc 6th Int Wheat Genet.Symp , Kyoto, Japan,28 Nov.3 Dec. PlanrGerm-PlasmInstitute,Kyoto University.Kyoro, Japan.
2 Associaleprofessor,Dep ofPlant Pathology;researchenlomologrst,USDAgeneticist,
USDA-ARS,Dep of AgronARS. Dep.of Entomology;research
professor.Dep.
omy; researchassistant.
Dep. of PlantPathologylassociate
of Agronomy:associateprofessor,Fort Hays Branch Exp. Stn., Kansas
of the KanStateUniv . Manhattan,KS 66506 Cooperativeinvestigations
KansasAgrrc.Exp Stn and the USDA-ARS.Contributionno. E6-368-J,
sasAgric.Exp Stn., KansasStateUniv., Manhattan,KS 66506.Research
supponedin part by the KansasWheat Commissionand KansasCrop
ImprovementAssociation.Registrationby the Crop Sci. Soc.of Am. Acce p te d3 0 Ju n e 1 9 8 6 .