Download PDF, EPUB, MOBI A Survey of the Sources of Leaf Rust Resistance in Winter Wheat Varieties and Crosses (Classic Reprint)

Book Details:

Author: Frances Lorin Smith
Date: 30 Apr 2018
Publisher: Forgotten Books
Language: English
Format: Hardback::108 pages
ISBN10: 0267056192
ISBN13: 9780267056194
File size: 59 Mb
Dimension: 152x 229x 8mm::304g
Download Link: A Survey of the Sources of Leaf Rust Resistance in Winter Wheat Varieties and Crosses (Classic Reprint)

J. Appl. Genet. 44(2), 2003, pp. 139-149 Leaf rust resistance genes of wheat: identification in cultivars and resistance sources ukasz STÊPIEÑ, Lidia GOLKA, Jerzy CHE KOWSKI Institute of Plant Genetics, Polish Academy of Science, Poznañ, Poland Request PDF on ResearchGate | Characterization of Resistance to Stripe Rust in Contemporary Cultivars and Lines of Winter Wheat from the Eastern United States | Stripe rust, caused Puccinia Slow rusting resistance in wheat (Triticum aestivum) to leaf rust (Puccinia triticina) and stripe rust (Puccinia striiformis tritici) is often conferred a few partially effective, non-hypersensitive types of genes with additive effects. Inheritance studies at CIMMYT, Mexico have shown that although individually these genes may have small to intermediate effects, combinations of 3 to 5 such Malika was selected from the doubled haploids derived from the cross 'Achtar3*//'Kanz'/Ks85-8-4). Achtar and Kanz are Moroccan varieties originating from segregating More than 70 leaf rust resistance genes have been identified and mapped to The new identified sources of resistance and QTL could be used in wheat The objective of this study was to identify leaf rust resistance (Lr) and stem derived from the cross Rusty (rust susceptible) PI 192051-1 (rust resistant) as Sr8155B1 is another resistance source in durum wheat found to for resistance to leaf and stripe rust in winter-habit hexaploid wheat landraces. suggested that lm might be a unique source of APR to leaf rust in wheat. In the current study, we took advantage of an existing RIL popu-lation of Ning7840 crossed with the soft red winter wheat Clark to testtheeffectoflm underfieldconditions.Italsoprovidedan oppor-tunity to map the intermediate level of resistance to leaf rust that oc- Summary. The genetic nature of resistance to four Australian strains of Puccinia recondita was studied in the cultivar Timgalen and in three entries of the 1963 ISWRN, viz, 25 (W3300) 318 (W3301) and 409 (W3303). Seedling resistance of Timgalen was controlled the dominant gene Lr3 and a recessive gene, tentatively designated lrT.A third gene, identical with one in C.I.12632, was Leaf rust, caused Puccinia triticina Eriks., is a common and widespread disease of wheat (Triticum aestivum L.) in Egypt. Host resistance is the most economical, effective, and ecologically sustainable method of controlling the disease. Molecular markers help to determine leaf rust resistance genes (Lr genes). The objective of this study was to identify Lr genes in fifteen wheat cultivars Leaf rust resistance was estimated in 83 common wheat accessions carrying alien genetic material from the collection of the Vavilov Institute. Eight accessions with seedling resistance Jagger has resistance to the stem rust pathogen race TTTTF, which is virulent to many winter wheat cultivars, yet the genetic basis of this resistance was unknown. Marker analysis and resistance to leaf rust and stripe rust demonstrated that Jagger has the 2NS/2AS translocation from T. Ventricosum (Tausch) Ces., Pass. Growing resistant wheat varieties is a key method of controlling two important wheat diseases, leaf rust and stripe rust. We analyzed quantitative trait loci (QTL) to investigate adult plant resistance (APR) to these rusts, using 141 F 5 RILs derived from the cross Avocet- YrA /Francolin#1. Stem Rust Resistance in a Geographically Diverse Collection of Spring Wheat Lines Collected from Across Africa Renée Prins,1, 2, Susanne Dreisigacker,3, Zakkie Pretorius,2 Hester van Schalkwyk,1, 2 Elsabet Wessels,1 Corneli Smit,1 Cornel Bender,2 Davinder Singh,4 and Lesley A. Boyd 5, * resistance genes Yr1, Yr5, Yr7, Yr9, Yr10, Yr15, Yr17, Yr26 and Yr28 (reviewed Chen 2005). Compared to the large number of reports on DNA markers associated with all-stage resistance genes, there are relatively few reports iden-tifying genes or QTL and markers for durable resistance to stripe rust in wheat. Multiple QTL in diVerent resistant Abstract. Leaf rust is a common disease of wheat, consistently reducing yields in many wheat-growing regions of the world. Although fungicides are commonly applied to wheat in the United States (US), genetic resistance can provide less expensive, yet effective control of the disease. Sources of resistance to yellow rust and stem rust in wheat-alien introgressions Mahbubjon Rahmatov Introductory Paper at the Faculty of Landscape Planning, Horticulture and Agricultural Science 2013: 3 Swedish University of Agricultural Sciences Alnarp, December, 2013 ISSN 1654-3580 Lines with the additional adult plant resistance gene in both crosses had leaf rust severity of 10 to 30% with a resistance response of small to large uredinia with chlorosis and necrosis. Santa Fe and Duster are valuable sources of leaf rust resistance for the southern Great Plains region. The tendency of unpaired meiotic chromosomes to undergo centric misdivision was exploited to translocate leaf rust and stripe rust resistance genes from an Aegilops kotschyi addition chromosome to a group 2 chromosome of wheat. Monosomic and telosomic analyses showed that the translocation occurred to wheat chromosome arm 2DL. "If this type of durable leaf rust and stripe rust resistance can be incorporated into most or all of our new wheat varieties, that will give us more resources to focus on other traits in our breeding problem, such as scab resistance, Hessian fly resistance, quality, and others," the wheat researcher says. The soft red winter wheat cultivar Jamestown is productive in the deep south, F5:9 recombinant inbred lines (RILs) from a cross of Pioneer '25R47'/Jamestown and The leaf rust resistance gene Lr18, derived from Triticum prevalent and maintained in SRW wheat varieties for more than half a century. Leaf rust (Puccinia triticina Eriks.), stripe rust (Puccinia striiformis f.tritici Eriks.) and stem rust (Puccinia graminis f. Sp. Tritici) cause major production losses in durum wheat (Triticum turgidum L. Var. Durum).The objective of this research was to identify and map leaf, stripe and stem rust resistance loci from the French cultivar Sachem and Canadian cultivar Strongfield. Molecular markers for wheat leaf rust resistance gene Lr41 Xiaochun Sun Guihua Bai Brett F. Carver frequency of the resistance marker allele in hard winter wheat germplasm made it an ineffective marker for MAS. Therefore, better markers are needed for this the plant source for DNA isolation. Leaf However, wheat diseases such as powdery mildew and leaf rust severely Wheat varieties containing this fragment always display high yield potential, broad Thus, triticale cultivars can serve as an alternative source in wheat improvement. In the present study, to incorporate resistance genes against

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