Tan spot caused by Pyrenophora tritici-repentis is an important foliar disease of wheat that can causes high yield losses. In Algeria, tan spot is widely present on both durum and bread wheat, the pathogen population structure was founded to be complex and showed a high molecular diversity. Among the various control measures, the most efficient and sustainable approach is the deployment of resistant cultivars. In this study, available germplasms of wheat, including 25 inbreeding lines, 54 landraces, and 37 cultivars were evaluated against races 1 and 5. Reaction of the 116 genotypes was initially evaluated under controlled conditions in seedling stage, and then the observed resistant genotypes, were evaluated in field in order to confirm their reaction against each race. Our results showed that a total 13 genotypes including inbreeding lines, landraces and cultivars showed resistant or moderately resistant reaction to race 1, while 23 genotypes, showed resistant response to race 5. However, only 1 landrace and 6 cultivars were resistant to both races 1 and 5. Genotype-resistant response in field in adult plant was similar to one recorded on growth room. These results have allowed us to recommend cultivation of some cultivars, according to races prevalent in Algerian regions, as well as recommending breeders to use the resistant sources in their breeding programs. For our knowledge, this is the first report of germplasm evaluation against tan spot disease in Algeria, and the first report of identification of resistant resources to this disease.

小麦黑斑病菌引起的棕褐色斑点是一种重要的小麦叶面病，可导致高产损失。在阿尔及利亚，硬粒小麦和面包小麦均普遍存在棕褐色斑点，病原菌的种群结构复杂且分子多样性高。在各种控制措施中，最有效和可持续的方法是部署抗病品种。在这项研究中，针对第1种和第5种对包括25个近交系，54个地方品种和37个品种的可用小麦种质进行了评估，初步评估了116种基因型在苗期的控制条件下的反应，然后观察到了抗性基因型，在野外进行了评估，以确认他们对每个种族的反应。我们的结果显示，共有13个基因型，包括近交系，地方品种和品种对第1种具有抗性或中度抗性，而23个基因型对第5种具有抗性。然而，成年植物中只有1个地方品种和6个品种对第1和第5种抗性。与生长室记录的相似。这些结果使我们能够根据阿尔及利亚地区的种族推荐一些栽培品种，并建议育种者在其育种计划中使用抗性来源。就我们所知，这是阿尔及利亚针对棕褐色斑点病的种质评估的第一份报告，也是鉴定对该病具有抗药性的资源的第一份报告。在成年植物中，只有1个地方品种和6个品种对第1和第5种种族均具有抗性。这些结果使我们能够根据阿尔及利亚地区的种族推荐一些栽培品种，并建议育种者在其育种计划中使用抗性来源。就我们所知，这是阿尔及利亚针对棕褐色斑点病的种质评估的第一份报告，也是鉴定对该病具有抗药性的资源的第一份报告。在成年植物中，只有1个地方品种和6个品种对第1和第5种种族均具有抗性。这些结果使我们能够根据阿尔及利亚地区的种族推荐一些栽培品种，并建议育种者在其育种计划中使用抗性来源。就我们所知，这是阿尔及利亚针对棕褐色斑点病的种质评估的第一份报告，也是鉴定对该病具有抗药性的资源的第一份报告。并建议育种者在其育种计划中使用抗性来源。就我们所知，这是阿尔及利亚针对棕褐色斑点病的种质评估的第一份报告，也是鉴定对该病具有抗药性的资源的第一份报告。并建议育种者在其育种计划中使用抗性来源。就我们所知，这是阿尔及利亚针对棕褐色斑点病的种质评估的第一份报告，也是鉴定对该病具有抗药性的资源的第一份报告。