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Theor Appl Genet. 1993 Feb;85(6):713-8. doi: 10.1007/BF00225010.

Genetical and RFLP studies at the Mla locus conferring powdery mildew resistance in barley.

TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik

A Jahoor, A Jacobi, C M Schüller, G Fischbeck

Affiliations

  1. Lehrstuhl für Pflanzenbau und Pflanzenzüchtung, Technische Universität München, W-8050, Freising-Weihenstephan, Germany.

PMID: 24196041 DOI: 10.1007/BF00225010

Abstract

The complex structure of the multigene family at the Mla locus conferring powdery mildew resistance in barley was studied by making diallel crosses between several near-isogenic lines carrying different Mla alleles. The mode of inheritance of the Mla alleles investigated was determined to be dominant for Mla1, Mla6, Mla7 and Mla13 and semidominant for Mla3, Mla12 and Mla20. F1 plants were backcrossed to the susceptible recurrent parent in order to identify susceptible and double-resistant recombinants in the BC1F1 generation. Out of 17605 progenies tested in the BC1F1 generation, two susceptible recombinants, one between Mla1 and Mla12 and one between Mla13 and Mla20 were confirmed. The former was also verified by RFLP analysis.

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