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

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

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 dominan...

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Veröffentlicht in:Theoretical and applied genetics 1993-02, Vol.85 (6-7), p.713-718
Hauptverfasser: Jahoor, A. (Technische Univ. Muenchen, Freising (Germany). Lehrstuhl fuer Pflanzenbau und Pflanzenzuechtung), Jacobi, A, Schueller, C.M.E, Fischbeck, G
Format: Artikel
Sprache:eng
Schlagworte:
Barley
Biological and medical sciences
Classical genetics, quantitative genetics, hybrids
ERYSIPHE GRAMINIS
Fundamental and applied biological sciences. Psychology
GENE
GENES
Genetics of eukaryotes. Biological and molecular evolution
Hordeum spontaneum
HORDEUM VULGARE
MARCADORES GENETICOS
MARQUEUR GENETIQUE
Mla locus
Multigene family
Pteridophyta, spermatophyta
RECOMBINACION
RECOMBINAISON
Recombination
RESISTANCE AUX MALADIES
RESISTENCIA A LA ENFERMEDAD
RFLP marker
Vegetals
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Beschreibung
Zusammenfassung: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. F(1) plants were backcrossed to the susceptible recurrent parent in order to identify susceptible and double-resistant recombinants in the BC(1)F(1) generation. Out of 17 605 progenies tested in the BC(1)F(1) 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.
ISSN:0040-5752
1432-2242
DOI:10.1007/BF00225010