Determination of some disease resistance genes of tomato breeding lines which developed from different origine using molecular markers

Abstract

Tomato is one of the important vegetables produced in the world, and China, USA and Turkey are among the important producers in world production. Diseases and pests are one of the most important problems in tomato as in other species. Breeding for disease resistance has been an important objective in tomato improvement. When preparing new breeding programs, genetic materials from different backgrounds are needed. However, the genes for resistance to diseases and pests may vary according to the tomato production regions. In order to obtain the desired resistance in breeding programs, it is important to know which resistance is needed for which region. From this point of view, in this study, it is aimed to determine the distribution of disease and pest resistance of the lines developed from tomato varieties produced in Turkey, USA and Jordan. In the materials selected from Turkey in 2014, disease resistance other than Verticillium was rarely found, while Sw-5 and Ph3 genes were found in 2017 and 2019. On the other hand, it was determined that the majority of genetic materials originating from USA and Jordan had Ve, FF, Mi1-2, Pto, Tm-2, Ty-3, Ph3 and SW5 genes. The findings show that it can be taken into account in developing disease and pest resistant varieties for different production regions.