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2 edition of Genes for resistance to rusts and powdery mildew in wheat found in the catalog.

Genes for resistance to rusts and powdery mildew in wheat

S. M. S. Tomar

Genes for resistance to rusts and powdery mildew in wheat

a compendium on genes for disease resistance and hybrid lethality in wheat and its related species

by S. M. S. Tomar

  • 363 Want to read
  • 29 Currently reading

Published by Division of Genetics, Indian Agricultural Research Institute in New Delhi .
Written in English


Edition Notes

Includes bibliographical references (p. [135]-152).

StatementS.M.S. Tomar, M.K. Menon.
ContributionsIndian Agricultural Research Institute. Division of Genetics.
The Physical Object
Pagination152 p. :
Number of Pages152
ID Numbers
Open LibraryOL16835004M
LC Control Number2007340357

good levels of cold hardiness (16), rust and powdery mildew resistance (12,13, 19,21), and insect resistance (6,7). Wheat germ plasm with resistance to leaf and stem rust (12,2 1,22), Hessian fly (17), and greenbug (11,17) derived from A. squarrosa has been developed. Previously, we have reported on disease and insect resistance in wild.   Through subsequent research, Madsen was also found to be resistant to nematodes and Wheat yellow mosaic virus, and moderately resistant to common bunt and powdery mildew.

wheat improvement. The leaf rust resistance gene Lr34 and stripe rust resistance gene Yr18 are effective at the adult plant stage and have provided moderate levels of durable resistance to leaf rust caused by Puccinia tri-ticina Eriks. and to stripe rust caused by Puccinia striiformis Westend. f. sp. tritici. These genes have not. Bread wheat (Triticum aestivum L.) is one of the most important food crops ia graminis tritici (Bgt), is an obligate biotrophic ascomycete fungus that invades the aerial parts of wheat, causing powdery mildew damage caused by Bgt can result in yield losses from 30% to 40% in years with severe epidemics [1,2].Deployment of resistance (R) genes and spraying with.

The objective of this proposal is to apply genomics and mapping technologies to develop molecular markers that are tightly linked to powder mildew and strip rust disease resistance genes and used them for marker-assisted selection and pyramiding of the targeted powdery mildew and stripe rust resistance genes in wheat breeding program. Near-isogenic lines (NILs) and their recurrent parent Chancellor (Cc) were used to identify restriction fragment length polymorphic markers linked to powdery mildew (Blumeria graminis (DC.)E.O. Speer tritici) resistance genes Pm1, Pm2, Pm3, and Pm4 in wheat (Triticum aestivum L. em. Thell). By mapping these polymorphic markers in F 2 progenies from crosses of the NILs with Cc, it was.


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Genes for resistance to rusts and powdery mildew in wheat by S. M. S. Tomar Download PDF EPUB FB2

J∅rgensen, J. Helms & C. Jensen, Genes for resistance to wheat powdery mildew in derivatives of Triticum timopheevi and T. ica – Google ScholarCited by: The Lr67 gene for adult plant resistance (APR) to leaf rust was identified in the common wheat accession PI (1) and transferred into Thatcher to produce the backcross line RL (Thatcher*6/PI).Author: Marcelo Soria.

A leaf rust resistance gene Lr41, derived from Triticum tauschii (syn. Aegilops squarrosa) and powdery mildew resistance gene, derived from Dasypyrum villosum (syn.

Haynaldia villosa), were. Lr34 was recently cloned (11) and it was shown that it is the same gene as Yr18 (resistance to adult plant stripe rust), powdery mildew resistance (Pm38) and leaf tip necrosis (Ltn1).

This gene codes for a putative ABC : Marcelo Soria. In general, powdery mildew resistance genes are race‐specific, and are only effective against a subset of Bgt isolates; however, the mlo mutants confer broad‐spectrum resistance in wheat. Bread wheat (Triticum aestivum L.) is a hexaploid (2 n = 42; AABBDD) with a genome of c.

17 Gb that contains > genes (International Wheat Genome Sequencing, ).Cited by:   Powdery mildew is one of the most devastating diseases of wheat. To date, few powdery mildew resistance genes have been cloned from wheat due to the size and complexity of the wheat genome.

Triticum urartu is the progenitor of the A genome of wheat and is an important source for powdery mildew resistance genes. Few widely effective sources of resistance to powdery mildew, caused by Blumeria graminis (DC.) E. Speer f. tritici Em.

Marchal, have been identified in wheat (Triticum aestivum L.), and the. Powdery mildew (Blumeria graminis f. tritici) is one of the most damaging diseases of wheat.

The objective of this study was to identify the wheat genomic regions that are involved in the control of powdery mildew resistance through a quantitative trait loci (QTL) meta-analysis approach. This meta-analysis allows the use of collected QTL data from different published studies to obtain.

Development of cultivars with durable resistance is crucially important for global wheat production. This paper reviews the progress of genetic study and application of adult plant resistance (APR) to wheat leaf rust and powdery mildew.

Eighty leaf rust and powdery mildew APR quantitative trait loci (QTL) have been reported on 16 and 21 chromosomes, respectively, in over 50 publications during the last 15 yr.

Powdery mildew caused by the airborne ascomycete fungus Blumeria graminis f. hordei (Bgh) is one of most common diseases of barley (Hordeum vulgare). This, as with many other plant pathogens, can be efficiently controlled by inexpensive and environmentally-friendly genetic resistance.

General requirements for resistance to the pathogens are effectiveness and durability. The aim of the present work was to evaluate transgenic wheat lines, harboring the barley chi26 gene for resistance against rust and powdery mildew diseases.

The T4, T5, T6, T8, and T9 generations of the four transgenic lines were assayed using artificial infection in. Pyramiding of disease resistance genes into a single genotype is an important breeding approach to obtain more durable resistance.

Closely linked genes for resistance to wheat rusts and powdery mildew occur at the Pm1-LrSr15 loci on chromosome 7AL [ 26] and in the Pm5-SrLr14 region in 7BL [ 27 ].

Stripe rust and powdery mildew are both devastating diseases for durum and common wheat. Pyramiding of genes conferring resistance to one or more diseases in a single cultivar is an important.

The list of popular Rps genes and near-isogenic lines (NILs) carrying Phytophthora root and stem rot and powdery mildew resistance genes and the source of resistance. Three powdery mildew resistance gene combinations, Pm2+Pm4a, Pm2+Pm21, Pm4a+Pm21 were successfully integrated into an elite wheat cultivar ‘Yang′.

Double homozygotes were selected from a small F 2 population with the help of molecular markers. The long arm of 6R carried by cv. Prolific is known to harbor Pm20, a gene which conditions immunity against a range of Bgt isolates (Heun and Friebe, ; Friebe et al., ), while Li M.

et al. () have mapped a powdery mildew resistance gene to the same arm in cv. Kustro and wheat plants carrying 6RL transferred from the rye germplasm accession PI manifest an. Powdery mildew resistance genes Pm24, Pm24b, and MlHLT were identified in Chinese wheat landraces Chiyacao (CYC) 19, Baihulu (BHL) 20.

Ae. tauschii has proved to be a valuable source of powdery mildew resistance, providing genes Pm2, Pm10, Pm15, Pm19, Pm34, Pm35 (Alam et al., ) and Pm58 (Wiersma et al., ). Durum wheat is a less valuable source of powdery mildew resistance, though it contributed gene Pm3h.

Powdery mildew (PM) of cucumber (Cucumis sativus), caused by Podosphaera xanthii, is a major foliar disease worldwide and resistance is one of the main objectives in cucumber breeding programs.

The resistance to PM in cucumber stem is important to the resistance for the whole plant. In this study, g. TIBL‐1RS wheat‐rye translocation cultivars utilized in wheat programmes worldwide carry powdery mildew resistance gene ar‘Amigo’possesses resistance gene Pm17 on its TIAL‐1RS translocated chromosome.

To be able to use Pm17efficiently in breeding programmes, this gene was transferred to a TIBL‐1RS translocation in line Helami‐, and allelism between Pm8 and. Wheat Rusts: An Atlas of Resistance Genes provides a basis to identify genes for resistance to stem, leaf and stripe rusts of wheat.

Typical phenotypes associated with most known genes for resistance to the three rust diseases of wheat are illustrated in full colour.The analysis of the presence of markers linked to the resistance to infections caused by B. graminis f.

sp. tritici and P. triticina demonstrated that Zebra × S12 was the most promising breeding line with the highest number of markers for genes/alleles encoding resistance to powdery mildew and leaf rust.Xiaodan Xu, Qiang Li, Zhanhong Ma, Jieru Fan, Yilin Zhou, Molecular mapping of powdery mildew resistance gene PmSGD in Chinese wheat landrace Shangeda using RNA-seq with bulk segregant analysis, Molecular Breeding, /s, 38, 3, ().