title: Improvement of the agronomic traits of a wheat-barley centric fusion by introgressing the 3HS.3BL translocation into a modern wheat cultivar.
abstract: The 3HS.3BL spontaneous Robertsonian translocation obtained from the progenies of wheat-barley (Chinese Spring × Betzes) hybrids backcrossed with wheat line Mv9kr1 was transferred into the modern Martonvásár wheat cultivar Mv Bodri. The translocation was identified with molecular cytogenetic methods. The inheritance of the translocation was traced using genomic in situ hybridization. Fluorescence in situ hybridization using barley subtelomeric (HvT01) and centromere-specific [(AGGGAG)4] repetitive DNA probes confirmed that the complete barley chromosome arm was involved in the Robertsonian translocation. The wheat-specific repetitive DNA probes identified the presence of the whole wheat genome, except the short arm of the 3B chromosome. Genotypes homozygous for the centric fusion were selected, after which morphological analysis was performed on the plants and the yield components were measured in the field during two consecutive vegetative seasons. The introgression of the 3HS.3BL translocation into the modern wheat cultivar Mv Bodri significantly reduced the plant height due to the incorporation of the dwarfing allele RhtD1b. The presence of the 3HS.3BL translocation in the Mv9kr1 and Mv Bodri wheat background improved tillering and seeds per plant productivity in field experiments carried out in Martonvásár and Keszthely, Hungary.
authors: Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, H-2462, Martonvásár, P.O. Box 19, Hungary.
authors: Edina
authors: E
authors: Türkösi
authors: András
authors: A
authors: Farkas
authors: Nikolett Réka
authors: NR
authors: Aranyi
authors: Borbála
authors: B
authors: Hoffmann
authors: Viola
authors: V
authors: Tóth
authors: Márta
authors: M
authors: Molnár-Láng
mesh_terms: D002678:Chimera / Q000235:genetics; D003433:Crosses, Genetic; D005819:Genetic Markers; D001467:Hordeum / Q000235:genetics*; D010641:Phenotype; D014178:Translocation, Genetic; D014908:Triticum / Q000235:genetics*
chemical_list: D005819:Genetic Markers
keywords: allèle de nanisme; blé–orge translocation robertsonienne; composantes du rendement; dwarfing allele; fluorescence in situ hybridization; hybridation en fluorescence in situ; tallage; tillering; wheat–barley Robertsonian translocation; yield components