نتایج جستجو برای: leaf rust
تعداد نتایج: 90061 فیلتر نتایج به سال:
Leaf rust, caused by Puccinia triticina, is the most prevalent and widespread disease of wheat in South America. The objective of this study was to determine whether genetically differentiated groups of P. triticina are currently present in South America and to compare the South American population with the previously characterized population in North America. In total, 130 isolates of P. triti...
Leaf rust is one of the most destructive diseases affecting wheat worldwide. The most effective way to control it is to use resistant cultivars. Resistance based on slow-rusting adult plant resistance (APR) genes has proven to be the best method for developing cultivars with durable resistance. A source of slow-rusting APR for leaf rust is the Brazilian wheat cultivar Toropi. The Toropi/IAC 13 ...
the interaction between root-colonizing pseudomonas fluorescens strain cha0mcherry and three wheat cultivars (bolani, roushan, forno) was studied as a phenomenon to be employed in the control of wheat leaf rust disease (puccinia triticina). cha0mcherry was inoculated using seed treatment method. the application of cha0mcherry reduced the number of pustules on leaves via inducing systemic resist...
Expression of the fis1 gene from flax (Linum usitatissimum) is induced by a compatible rust (Melampsora lini) infection. Infection of transgenic plants containing a beta-glucuronidase (GUS) reporter gene under the control of the fis1 promoter showed that induction is highly localized to those leaf mesophyll cells within and immediately surrounding rust infection sites. The level of induction re...
A comprehensive germplasm evaluation study of wheat accessions conserved in the Indian National Genebank was conducted to identify sources of rust and spot blotch resistance. Genebank accessions comprising three species of wheat-Triticum aestivum, T. durum and T. dicoccum were screened sequentially at multiple disease hotspots, during the 2011-14 crop seasons, carrying only resistant accessions...
Leaf rust, caused by Puccinia triticina Eriks., is an important foliar disease of wheat (Triticum aestivum L.) worldwide. Leaf rust resistance gene Lr42 from Aegilops tauschii Coss. has been used as a source of rust resistance in breeding programs. To identify molecular markers closely linked to Lr42, a segregating population of nearisogenic lines contrasting for the presence of Lr42 was develo...
Hundreds of quantitative trait locus (QTL) have been reported in diverse types hexaploid wheat (Triticum aestivum L.) populations but direct comparisons QTLs different studies and are still challenging due to the lack physical positions for most QTLs. Here, we used International Wheat Genome Sequencing Consortium (IWGSC) RefSeq v2.0 map all markers associated with leaf spot (Ls), rust (Lr), str...
ABSTRACT In the north central United States, leaf rust caused by Melampsora medusae is a major disease problem on Populus deltoides. In this study we identified molecular markers linked to a M. medusae resistance locus (Lrd1) that was segregating 1:1 within an intraspecific P. deltoides family (C9425DD). Previous field results were confirmed in the controlled environment of a growth chamber thr...
Proteins in intercellular washing fluid (IWF) from wheat (Triticum aestivum) and barley (Hordeum vulgare) leaves were separated by two-dimensional isoelectric focusing-polyacrylamide gel electrophoresis and stained with Coomassie brilliant blue (CBB) or silver. Intracellular protein from the cut ends of leaves accounted for only a small proportion of total protein in IWF from wheat leaves. When...
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