Hessian fly-resistance gene transferred from chromosome 4M(V) of Aegilops ventricosa to Triticum aestivum
1997
Delibes, A. | Moral, J. del | Martin-Sanchez, J.A. | Mejias, A. | Gallego, M. | Casado, D. | Sin, E. | Lopez-Brana, I.
A new Hessian fly (Mayetiola destructor) resistance gene from Aegilops ventricosa and its transfer to hexaploid wheat is described. The 4D(4M(v)) substitution line H-93-33 derived from the cross [(Triticum turgidum H-1-1 X Aegilops ventricosa no. 11) X Triticum aestivum H-10-15] was highly resistant to the Spanish population tested. Resistance seemed to be inherited as a single dominant factor in the F2 generation resulting from a cross of H-93-33 with its susceptible parent (H-10-15). Resistance in Ae. ventricosa no. 10 was located on chromosome 4M(v) using M(v) wheat/Ae. ventricosa addition lines. The resistance gene transferred from Ae. ventricosa no 11 to H-93-33 (H27 is allelic with respect to that of Ae. ventricosa no. 10 and is non-allelic with respect to the genes H3 and H6 from Monon and Caldwell respectively. The assignment of H27 gene to chromosome 4M(v) is further supported by its linkage to a gene encoding isozyme Acph-M(v)1, previously located on chromosome 4M(v) in the line H-93-33. A new marker from homoeologous chromosome group 4 (Amp-M(v)2) present in H-93-33 and the 4M(v) addition line is described.
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