بررسي ژنتيكي مقاومت نسبت به رنگ زرد گندم تحت شرايط طبيعي با استفاده از سيستم تلاقي دي آلل

This study was conducted to investigation of general combining ability and specific combining ability of Sardari, Rashid, Sabalan, Navid and Falat cultivars and type of genes action which are responsible resistance to yellow rust. For this purpose parents and their crosses (Non-reciprocal) investigated in diallel design. Griffing analysis showed that genes with additive and non-additive effect were important. The highest level of resistance was observed in Falat (with the lowest general combining ability) and the lowest level of resistance was observed in Sardari (with the highest general combining ability). The hybrid that showed the highest level of resistance was Navid x Sabafan but itʹs specific combining ability was low. The hybrids that showed high specific combining ability were Navid x Falat, Sabalan x Falat and Sardari x Falat but they showed the lowest level of resistance. These conclusions showed that selection method is better than crossing method for transferring resistance. Analysis with Haymanʹs method showed that one gene is responsible for resistance to yellow rust and type action of alleles together is over dominance.