Lines of winter soft wheat with introgressed new and effective Sr genes were developed as a result of interspecies hybridization at the Plant Breeding and Genetics Institute. The 85/06 line possesses the SrAc1 gene; the 47/06, 54/06, 82/06, 85/06, 87/06, 238/06, and 367/06 lines carry the SrAc1 and SrAc2 genes originated from Aegilops cylindrica; the 352/06 line has the SrTe1 and SrTe2 genes from Triticum erebuni; and the 12/86-04 line contains the SrAd1 and SrAd2 genes from Amphidipoid 4 (Triticum dicoccoides× Triticum tauschii).
Stem rust resistance gene Sr22 transferred to common wheat from Triticum boeoticum and T. monococcum remains effective against commercially prevalent pathotypes of Pucciniagraminis f. sp. tritici, including Ug99 and its derivatives. Sr22 was previously located on the long arm of chromosome 7A. Se...
Puccinia graminis f. sp. tritici, the causative agent of stem rust in wheat, is known for its high virulence variability and ability to evolve new virulence to resistance genes. Thus, pyramiding of several resistance genes in a single line is the best strategy for a sustainable control of wheat s...
Regular disease monitoring is currently carried out in the most important Italian wheat growing areas. In 2007–08 stem rust was absent in all locations tested except Montelibretti (Rome, Central Italy), where two common wheat varieties “Arsenal” and “Compair” had stem rust infections. T...
Stem rust (Puccinia graminis f. sp. tritici Eriks. & E. Henn.) (the causal agent of wheat stem rust) race Ug99 (also designated TTKSK) and its derivatives have defeated several important stem rust resistance genes widely used in wheat (Triticum aestivum L.) production, rendering much of the world...
Xiaobaidong, a Chinese landrace of wheat (Triticum aestivum L.), is resistant to a wide spectrum of powdery mildew (Blumeria graminis f. sp. tritici, Bgt) races, especially effective to currently prevalent races. This variety shows a response pattern that is different from the varieties possessin...
High-temperature adult-plant (HTAP) resistance to stripe rust (caused by Puccinia striiformis f. sp. tritici) is a durable type of resistance in wheat (Triticum aestivum L.). This study identified quantitative trait loci (QTL) conferring HTAP resistance to stripe rust in a population consisting o...
Stripe rust, caused by Puccinia striiformis f. sp. tritici, is one of the most devastating foliar diseases of common wheat (Triticum aestivum L.) worldwide. Growing resistant cultivars is the most effective approach to control the disease. To determine inheritance of stripe rust resistance and ma...
The Chinese winter wheat cultivar Zhoumai 22 is highly resistant to powdery mildew. The objectives of this study were to map a powdery mildew resistance gene in Zhoumai 22 using molecular markers and investigate its allelism with Pm13. A total of 278 F2 and 30 BC1 plants, and 143 F3 lines derived...
A genetic linkage map, based on a cross between the synthetic hexaploid CPI133872 and the bread wheat cultivar Janz, was established using 111 F1-derived doubled haploid lines. The population was phenotyped in multiple years and/or locations for seven disease resistance traits, namely, Septoria t...
Powdery mildew is one of the most destructive foliar diseases of wheat. A set of differential Blumeria graminis f.sp. tritici (Bgt) isolates was used to test the powdery mildew response of a Triticum monococcum-derived resistant hexaploid line, Tm27d2. Segregation analysis of 95 F2:3 lines from a...
