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Wheat-alien introgressions have been utilized and are playing an important role, through the fact that alien genomes carry the several desirable donor genes for wheat improvement. Produced wheat-alien amphidiploid used widely as a bridge in hybridizations for the facilitated transmission of valuable genetic properties from incorporated wild species to cultivated common wheat plants. It is also possible to consider them as a promising material for interamphiploid crosses following the scheme “bridge between bridges”. These crosses could allow the study of different cereal genomes behavior and merging in the same background as well as deriving of new polygenomic plants as valuable donors for breeding purposes.

This study investigated wide – hybridization heterosis for seven agronomic traits in interamphiploid F₁ hybrids grown together with their parents as drilled plots in conditions of Absheron Peninsula (Azerbaijan, Absheron Experimental Station of GRI). Seven quantitative traits were plant height (cm), peduncle length (cm), length of exposed peduncle (cm), spike length (cm), number of spikelets per spike, flag leaf length (cm) and flag leaf width (cm). Parental plants used in reciprocal crosses were two wheat-rye amphidiploids – primary triticale “ABDR” (2n=42 (AABBRR)), secondary trtiticale “AD908” (2n=42 (AABBRR)), which was derived from previous one and the wheat-Agropyron derivative Triticum aestivum / Agropyron junceum (2n=42(AABBDD) + 2n=14(JJ)). For each combination of parental lines the mid-parent performance (MP), mid-parent heterosis (MPH), and betterparent heterosis (BPH) were calculated. All analyses were performed using IBM SPSS Statistics v.26.0.