Chromosome engineering is a useful strategy for transfer of alien genes from wild relatives into modern crops. However, this strategy has not been extensively used for alien gene introgression in most crops due to low efficiency of conventional cytogenetic techniques. Here, we report an improved scheme of chromosome engineering for efficient elimination of a large amount of goatgrass (Aegilops ...

stem rust caused by puccinia graminis f. sp. tritici (pgt) is one of the destructive diseases of wheat in the world. the fungal pathogen can infect 365 different grass and more than 70 berberis species. dna sequences for the ribosomal rna internal transcribed spacer (its) have proven suitable to explore relationships at the species and subspecies levels. an isolate of pgt which was collected fr...

The stem rust diseases of wheat have historically been the major biotic stress responsible for destabilizing production in Asia and other parts world .Stem has continuously surge destroying genome especially after its race Ug99 that surfaced Uganda year 1999 suppressed vital resistance gene Sr31.It was pivotal had immunity to against lethal fungus.In order trace genetic resources inside genome;...

a d g e g U fi v g n the most unlucky of days in 1844, a fungus now referred to as Phytophthora infestans made ts way through the rolling hills of reland after ravaging American arms in the years immediately prior. elieved to have crossed the Atlantic n US ships bound for European orts, the disease is a water mold hich blights not only potatoes, but otentially tomatoes as well. But it as the Ir...

Stem rust, caused by Puccinia graminis f. sp. tritici (Pgt), has potential to cause major yield losses in durum wheat. Development of cultivars with improved resistance stem rust is a sustainable option for effective control this disease. This study was conducted identify genomic regions associated Ug99-derived Pgt races using doubled haploid (DH) mapping population produced from cross between ...

Abstract Wheat stem rust epidemics caused by the obligate pathogenic fungus Puccinia graminis f.sp. tritici have historically driven severe yield losses on all wheat growing continents and, after many decades of control, is re-emerging as a disease concern. In 1998, highly virulent race able to overcome 90% world cultivars, Ug99, was identified in Uganda. Since initial detection, pathogen has e...