Reprinted from Crop Science
V ol 39,N o.2
Registration of KS96WGRC34
Leaf Rust-Resistant Hard Red
Winter Wheat Germplasm
KS96WGRC34(Reg. no. GP-553, Pl 604219)is a leaf rustresistanthard red winter wheat (Triticum aestivumL.) germplasm
developedcooperativelyby the USDA-ARS, the KansasAgricuItural Experiment Station, and the Wheat Genetics Resource
Center.It was releasedas a germplasmin August 1996.
Seedlingsof KS96WGRC34exhibiteda low infectiontype(;C
to ;2C) when inoculatedwith sevenraces of leaf rust (Puccinia
reconditaRobergeex Desmaz.),KDB-10, MGM-10, MCD-10,
TBG-10, MBR-10, PNM-10,18,PNM-10, and MCR-10 (1,2).
Seedlingsof KS96WGRC34exhibited a 3- infection type when
inoculatedwith raceTFG-10(2). Adultplantsdisplayedlow infection types undermoderateto heavy leaf rust infectionsat Manhattan and Hutchinson,KS, in the years 1992to 1996,but had a high
infection typewhen testedunderheavyinoculumlevelsatBeeville,
TX, in 1995 (2). Seedlingsand adult plants of the wheat parents
'TAM 107' and 'Wrangler' exhibited high infection types in all
cztses.
KS96WGRC34 is an Fr-derived line with the pedigreeTAM
n7nA74g/lWrangler. TA749 is a leafrust-resistant
accession
of
Triticum monococcumL. subsp.aegilopoifus (Link) Thell (syn.
wbsp. boeoticura).Leaf rust resistancein KS96WGRC34is conditioned by a single, dominant gene from TA 749. The gene is
located on chromosome5A' and segregatesindependentlyof all
other known genestansfened from T. monococcamto hexaploid
wheat(3). KS96WGRC34is similar to Wranglerin height,daysto
heading,and overall phenotypebut hasthe TIAL.IRS hanslocation carriedby TAM 107.
Small quantities(2 g) of seedof KS96WGRC34are available
upon written request.Appropriate recognitionof sourceshouldbe
givenwhen this germplasmconfibutesto researchor development
of a new breedingline or cultivar. Seedstocksare maintainedby
the Wheat GeneticsResourceCenter, Dep. of Plant Pathologr,
Throckmorton Plant SciencesCenter, Kansas State University,
Manhattan,KS 66506-5502.
T. S. Cox, R. G. SEARS,
B. S. GILL,T. Hussmn,
R. L. BowDEN,ANDG. L. Bnown-Gurone* (4)
Referencesand Notes
1. Inng, D.L., ad J.A.Kokner.1989.A NorftAmerican
systmof nornenclauuefor Pu)ccinia
recondita
f . q. tritici.Phyopathology
79:525-529.
2. Hussien,
T., R.L.Bowden,
B.S.Gill,T.S.Cox,ad D.S.Manhall.1997.
Performance
genestransferredto common
of four new leaf nrstrcsistance
whearfiom Aegilopstauschii arf, Tritiarn nonacoccum.Plant Dis. 81:
582-586.
3. Hussien,T., R.L. Bowden,B.S. Gill, ad T.S. Cox. 1998.Chromosomal
locationsin commonwheatcf threenew leaf rust resisarrcegenesfrom
Trticum nnnococcutn.hrphytica LOl:lZ7-131.
4. T.S. Cox, ICRISAT, PaarrcheruPO, AP 502 324,Idia (formedyUSDAARS and KSLD; R.G. Sean, Dep. of Agronomy, and G.L. BrownGuedira,USDA-ARSandDep. of Agronorny,KansasStaEUniv., Manhaftan,KS 6650G5501;B.S. Gill, T. Hussien,ard R.L. Bowden,Dep. of
PlantPatrology,KansasStaEUniv., Manhaten,KS6650G5502.Cooperative investigationsof the USDA-ARSand the KansasAgric. Exp. Str..
Contributionno. 98-395-I, KansasAgric. Exp. Sh., KansasSae Univ.,
Manhauzn,KS 6650G4008.Registrationby CSSA. Acceprcd31 Oct.
198. *Correspordingauthor(gbg@ksr.edu).
Publishedin Crop Sci. 39:595(1999'1.