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Registration of KS99WGRC42 Hessian Fly Resistant Hard Red Winter Wheat Germplasm

^a USDA-ARS and Kansas State University, Manhattan, KS 66506-5501
^b Dept of Entomology, Kansas State University, Manhattan, KS 66506-5501
^c Department of Agronomy, Kansas State University, Manhattan, KS 66506-5501
^d Department of Plant Pathology, Kansas State University, Manhattan, KS 66506-5501
^e Agripro Wheat Inc., Junction City, KS 66441
^f Land Institute, Salina, KS 67401

^* Corresponding author (gbg{at}ksu.edu)

KS99WGRC42 (Reg. no. GP-779, PI 635054) is a hard red winter wheat (Triticum aestivum L.) with resistance to the Hessian fly [Mayetiola destructor (Say)] developed cooperatively by the USDA-ARS, the Kansas Agricultural Experiment Station, and the Wheat Genetics Resource Center. It was released as germplasm in August 1999.

KS99WGRC42 is homogeneous for resistance (antibiosis) to Biotype L of the Hessian fly based on greenhouse tests of seedlings. KS99WGRC42 is an F₅–derived line of the cross ‘Karl 92’/PI 94641//‘Jagger’*2/Karl 92. Hessian fly resistance of the germplasm is derived from PI 94641, an accession of cultivated emmer wheat [T. turgidum L. subsp. dicoccum (Schrank ex Schübler) Thell.] from Germany. The resistance of KS99WGRC42 to Hessian fly is controlled by a single partially dominant gene located on chromosome 1AS. Analysis of KS99WGRC42 with microsatellite markers indicates that a small, interstitial segment from T. turgidum subsp. dicoccum containing the Hessian fly resistance gene was transferred to the distal portion of 1AS. Two genes for resistance to Hessian fly have been located to wheat chromosome 1A: H5 and H11. KS99WGRC42 provides effective resistance to Biotype L of the Hessian fly, which is virulent to H5 (Ratcliffe and Hatchett, 1997). The gene H11 was transferred to common wheat from durum wheat [T. turgidum L. subsp. durum (Desf.) Husnot], a species closely related to emmer wheat. Differential reactions were observed when seedlings of PI 94641, KS99WGRC42 and PI 562617 (H11) (Patterson et al., 1994) were infested with Biotype L of the Hessian fly at 20°C and at 26°C. PI 94641 and KS99WGRC42 were homogeneous for resistance at both temperatures. A heterogeneous reaction was observed for PI 562617 at 20°C and a susceptible reaction was observed at 26°C. These data indicate that the gene in KS99WGRC42 is different from H5 and H11.

KS99WGRC42 is a hard red winter wheat similar to the Karl 92 (Sears et al., 1997) parent in height and days to heading. When evaluated in the field at Manhattan, KS, in 2002 and 2003, no visible symptoms of Wheat soilborne mosaic virus were observed on KS99WGRC42 and Karl 92. Intermediate and high levels of infection were observed for Jagger and ‘TAM 107’ with scores of 2 and 4, respectively, on a scale of 0 to 5 (0 = no visible symptoms and 5 = severe mottling and stunting). No stripe rust (caused by Puccinia striiformis Westend.) was observed on KS99WGRC42, Karl 92, or Jagger at Hutchinson, KS, in 2003, a year with heavy stripe rust infection. High levels of leaf rust (caused by Puccinia triticina Eriks.) were observed on KS99WGRC42 and both of the hard winter wheat parents at Manhattan and Hutchinson, KS, in 2003 and 2004.

Small quantities (3 g) of seed of KS99WGRC42 are available on written request to the corresponding author for at least 5 yr from the date of this publication. It is requested that the appropriate source be given when this germplasm contributes to research or development of new cultivars.

NOTES

Development of KS99WGRC42 was funded partly by grants from the Kansas Wheat Commission and by USDA-IFAFS competitive grant 2001-04462. Joint investigation by the USDA-ARS and the Kansas Agricultural Experiment Station. Registration by CSSA.

Accepted for publication August 31, 2004.

REFERENCES

• Patterson, F.L., F.B. Maas, III, J.E. Foster, R.H. Ratcliffe, S. Cambron, G. Safranski, P.L. Taylor, and H.W. Ohm. 1994. Registration of eight Hessian fly resistant common winter wheat germplasm lines (Carol, Erin, Flynn, Iris, Joy, Karen, Lola, and Molly). Crop Sci. 34:315.[Free Full Text]
• Ratcliffe, R.H., and J.H. Hatchett. 1997. Biology and genetics of the Hessian fly and resistance in wheat. p. 47–56. In K. Bondari (ed.) New developments in entomology. Research Singpost Scientific Information Guild, Trivandrum, India.
• Sears, R.G., T.J. Martin, T.S. Cox, O.K. Chung, S.P. Curran, W.F. Heer, and M.D. Witt. 1997. Registration of ‘Karl 92’ wheat. Crop Sci. 37:628.[Free Full Text]

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