The production of new Iranian genetically salt tolerant polyploid Tritipyrum lines via normal crossing program in Iran and Germany (IPK)

The non-Iranian primary Tritipyrum lines (2n=6x=42, AABBE^bE^b), were produced for the first time in 1997 in England (JIC), after Triticale (2n=6x=42, AABBRR) and Tritordeum (2n=6x=42, AABBH^chH^ch). In order to produce Iranian primary and secondary Tritipyrum 266 crosses in vernalized and unvernalized conditions with 150 plants of 25 Iranian 6x bread wheat cultivars, 80 plants of 8 Iranian durum wheat accessions in Germany (IPK) and 100 plants of Thinopyrum bessarabicum species from UK, Germany and USA were carried out by emasculating 5812 florets of 230 individual plants from 4x/6x Iranian wheat cultivars, then pollinated with 4 accessions of Thinopyrum bessarabicum species which led to 679 F₁ seeds (2n=3x/4x=21/28, ABE^b/ABDE^b) in Germany. In a wide crossing program between non-Iranian primary Tritipyrum lines and Iranian bread wheat cultivars, 229 F₁ seeds (2n=6x=42, AABBDE^b) of 6x new Iranian potential secondary salt tolerant Tritipyrum introgression genotypes (NIPSSTTIG) were obtained and by selfing led to 489 F₂ seeds in Germany (IPK) and Iran (SBUK) as new germplasm for improving new grain and pasture 6x new primary and secondary salt tolerant Tritipyrum cultivars in future.