Analysis of DNA sequence variation among genotypes is useful for differentiation of wheat accessions, selection strategies and genetic development of crop plants. We screened molecular markers for yellow rust resistance genes (Yr7, Yr9, Yr15, Yr18, Yr26, and YrH52), which are in the gene-rich regions of wheat chromosomes 1B, 2B, and 7D, to investigate DNA sequence differences and repeat mo...

El desarrollo de variedades trigo (Triticum aestivum L.) debe considerar, además alta capacidad rendimiento, otros caracteres importantes como la resistencia genética a enfermedades. objetivo este trabajo fue evaluar en harinero planta adulta roya lineal (Puccinia striiformis f. sp tritici Wensted.) y hoja recondita Rob. Ex. Desm. sp. tritici), familias F5 provenientes siete ciclos selección re...

The 1BL.1RS wheat-rye translocation contained in the Russian cultivar Aurora has been the most widespread alien translocation in wheat-breeding programs all over the world. However, following the prevalence of new biotypes of the pathogens, disease-resistance genes in this translocation chromosome have been overcome and consequently they have been eliminated in modern wheat-breeding programs. I...

We investigated whether the recent worldwide epidemics of wheat yellow rust were driven by races of few clonal lineage(s) or populations of divergent races. Race phenotyping of 887 genetically diverse Puccinia striiformis isolates sampled in 35 countries during 2009-2015 revealed that these epidemics were often driven by races from few but highly divergent genetic lineages. PstS1 was predominan...

La roya amarilla, causada por el hongo Puccinia striiformis W., sigue siendo una enfermedad importante del trigo en la región de El Bajío, Noroeste México y los Valles Altos centro México. Durante ciclo 2014 se observó epidemia amarilla México, donde tomaron muestras analizaron líneas diferenciales invernadero. Los resultados indicaron que las combinaciones virulencia Yr1, Yr2, Yr3, Yr6, Yr7, Y...

The research is aimed at studying economically valuable traits and genetic control of resistance to leaf-stem diseases, photoperiodic reaction short stemming soft spring wheat variety Semenovna, created by scientists the Omsk Agrarian Scientific Center (Russia) North Kazakhstan Agricultural Experimental Station (Kazakhstan). Using methods state testing, molecular genetics in vitro methods, morp...

Yellow rust is (Puccinia striiformis Westend. f. sp. tritici) among the supreme diseases causing serious losses in wheat production. The chemical fungicides are commonly used this disease-fighting. However, control not economical and also causes environmental pollution. Therefore, use of resistant varieties production has critical importance. resistance against yellow disease expressed with Yr ...

Stripe rust, caused by Puccinia striiformis f. sp. tritici, is a devastating disease of wheat in Turkey and worldwide. This pathogen can overcome known resistance genes negatively affect the production. The objectives this study were to determine virulence patterns stripe rust isolates collected from coastal areas (Aegean Mediterranean regions) Turkey, examine genetic diversity populations simp...

Yellow (stripe) rust, caused by Puccinia striiformis f. sp. tritici (Pst), is a major disease of common wheat worldwide. Disease epidemics in Russia have been frequent and destructive, mostly the North Caucasus. However, over last 5 years, significance Pst has markedly increased other Russian regions. Therefore, virulence diversity was investigated Triticum aestivum six geographically distant r...