| 0 | PI 633876 | P921696 | Triticum aestivum L. subsp. aestivum | Indiana, United States | NSGC |  | | 2003 | DEVELOPED | 2003 | | 40.42586860, -86.90806550 | | | Breeding material | Soft red winter wheat with gene H31, located on chromosome 5BS close to marker Xupw4148, that confers resistance to Hessian fly (Mayetiola destructor) biotype L. CI3984, the donor of H31, has one gene for resistance to Hessian fly biotype L, determined by segregation analysis of 63 backcross F2 families in which 32 families were segregating and 31 families were susceptible, fitting a 1 gene genetic model by X2 analysis. The Hessian fly resistance of CI3984 was highly effective against Hessian fly populations collected from Maryland, Delaware, South Carolina, and Georgia, as well as biotype D in laboratory tests. This is a progeny from an F6 plant that resulted from plant selection for resistance to Hessian fly biotype L during inbreeding following the backcross to Cardinal, a Hessian fly susceptible soft red winter wheat cultivar. Typically, 15-30 progeny seedlings from F2, F3, F4, and F6 plants were infested and placed in a controlled chamber at 19 deg. C, similar to conditions described previously. Stems are hollow, anthocyanin is absent. Spikes awnless, fusiform, and lax. Glumes glabrous, long, midwide, and white at maturity. Anthers yellow. Kernels red, long, and elliptical; crease is midwide and middeep; cheeks rounded, brush mid-sized, midlong, and not collared. | 1648793 | PI 633876 |