A collection of 917 accessions of Spanish durum and bread wheat was screened for resistance to leaf rust (Puccinia triticina) under field conditions at three locations. Resistance levels ranged from very low to very high, high susceptibility being most frequent. Relative disease severity (referred to the most susceptible accession = 100%) was lower than 20% in about 6% of the accessions in each...

Collections of Puccinia triticina were made from farmers’ fields five different agro-ecological locations (Sakrand, Tandojam, Larkana, Sanghar and Badin) Sindh province, Pakistan 2015 2016, to identify the virulence variation. Single uredinial isolates investigated for phenotyping on 24 near isogenic (Thatcher wheat) lines which differ single Lr resistance genes. Spores two (Sakrand Tandojam) n...

Leaf rust (caused by Puccinia triticina Eriks—Pt) occurs regularly in the Czech Republic and can inflict considerable yield losses on wheat, particularly southeastern part of country warm dry years. Knowledge resistance genes (Lr) is useful breeding, when combined with data virulence population. Seeds 56 winter wheat cultivars registered were obtained from Central Institute for Supervising Test...