Stripe or yellow rust caused by Puccinia striiformis f. sp. tritici (Pst) is the most important disease of wheat causing significant yield losses. Growing resistant varieties is the most efficient and sustainable way to control this disease. The aim of this study was to investigate molecularly the presence or absence of the major resistance genes Yr5, Yr10 and Yr15 to stripe rust in 54 Turkish durum wheat (Triticum turgidum var. durum) varieties and 11 wild emmer (Triticum turgidum var. dicoccoides) genotypes. In addition, field trials were conducted during 2019–2020 under natural epidemic conditions in Antalya to determine phenotypic reactions of these genotypes against stripe rust. As a result of molecular analyses, none of the 54 durum wheat varieties had Yr5 resistance gene; however, the resistance genes Yr10 and Yr15 were determined in 12 and 17 varieties, respectively. Moreover, 7 of these varieties had both Yr10 and Yr15 genes. None of 11 wild emmer accessions had resistance genes examined. It was also determined that 28 varieties had resistant reaction to Pst race(s) under natural infection conditions whereas all wild emmer accessions were highly susceptible. This is the first study to identify major Yr-genes in Turkish durum wheat varieties and, therefore, these findings can be beneficial in wheat breeding programs to be conducted for resistance to stripe rust.

由Puccinia striiformis f引起的条纹或黄锈病。sp。tritici ( Pst ) 是小麦最重要的病害，会导致严重的产量损失。种植抗性品种是控制这种疾病的最有效和可持续的方法。本研究的目的是从分子上研究54个土耳其硬粒小麦（Triticum turgidum var. durum）品种和11个野生二粒小麦（ Triticum turgidum var. dicoccoides ）中主要抗条锈基因Yr5、Yr10和Yr15的存在与否。) 基因型。此外，2019-2020 年期间在安塔利亚的自然流行条件下进行了田间试验，以确定这些基因型对条锈病的表型反应。分子分析结果表明，54 个硬粒小麦品种均无 Yr5抗性基因；然而，分别在 12 个和 17 个品种中确定了抗性基因Yr10和Yr15 。此外，其中 7 个品种同时具有Yr10和Yr15基因。11 个野生二粒小麦种质均未检测到抗性基因。还确定28个品种对Pst产生抗性反应自然感染条件下的一个或多个种族，而所有野生二粒小麦种质都高度易感。这是第一项在土耳其硬粒小麦品种中鉴定主要Yr基因的研究，因此，这些发现可能有益于为抗条锈病而进行的小麦育种计划。