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Wednesday, May 20, 2020 | History

2 edition of Breeding for resistance to barley net blotch (pyrenophora teres) found in the catalog.

Breeding for resistance to barley net blotch (pyrenophora teres)

Rickard Jonsson

Breeding for resistance to barley net blotch (pyrenophora teres)

by Rickard Jonsson

  • 149 Want to read
  • 25 Currently reading

Published by Swedish University of Agricultural Sciences in Alnarp .
Written in English

    Subjects:
  • Barley -- Disease and pest resistance -- Genetic aspects.,
  • Barley net-spot blotch disease -- Genetic aspects.,
  • Plant genetic engineering.,
  • Pyrenophora teres.

  • Edition Notes

    StatementRickard Jonsson.
    SeriesActa Universitatis Agriculturae Sueciae -- 277.
    The Physical Object
    Pagination1 v. (various pagings) :
    ID Numbers
    Open LibraryOL16115143M
    ISBN 109157658145

    Inheritance of spot blotch resistance in barley (Hordeum vulgare L.). Can. J. Plant Sci. – Spot blotch, caused by Bipolaris sorokiniana, is a major disease of barley hampering its commercial production in many parts of the world. Growing resistant cultivars is the most effective, economical and eco-friendly approach to control Cited by: 1. No variety is currently completely resistant to net blotch but some are moderately resistant which should reduce disease impact greatly. Cultivar resistance for winter barley ranges from in the AHDB Recommended List for cereals and oilseeds. Currently the most resistant cvs include Craft, California, Florentine and Belfry.

    Reciprocal crosses were made between 9 different barley genotypes with high genetic variability for net blotch resistance. Parents and 72 F1 plants were used to determine the inheritance of partial resistance to net blotch. Four experiments, one in a growth chamber on seedlings and 3 others in the field on adult plants, were undertaken using a randomised complete block design. An isolate of. In recent years, wild barley (H. vulgare ssp. spontaneum) has been increasingly used as a resistance source against net and spot blotch (Lehmann, ; Gustafsson and Bothmer, ; Jana and Bailey, ; Sakti and Bailey, ; Sato and Takeda, ).

      Disease resistance is one of the major factors that can be improved to sustain yield potential in cultivated crops. This book looks at disease resistance in wheat, concentrating on all the economically important diseases - their economic impact and geographical spread, breeding for resistance, pathogen variability, resistance mechanisms and recent advances made on resistance 4/5(1). Pyrenophora teres f. maculata, the causal agent of spot form of net blotch (SFNB), is an emerging pathogen of barley in the United States and Australia. Compared with net form of net blotch (NFNB), less is known in the U.S. Upper Midwest barley breeding programs about host resistance and quantitative trait loci (QTL) associated with SFNB in breeding lines.


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Breeding for resistance to barley net blotch (pyrenophora teres) by Rickard Jonsson Download PDF EPUB FB2

Resistance sources within the bread wheat gene pool Major known sources of resistance for wheat crop against spot blotch within the wheat gene pool represent the primary gene pool and are listed. Plant Breeding. VolumeIssue 3. Original Article. Mapping seedling resistance to net form of net blotch (Pyrenophora teres f.

teres) in barley using detached leaf assay teres in barley, a detached leaf assay was conducted on two DH populations with a set of 11 single conidial lines (SCLs). Out of these, three showed different reactions Cited by: Similarly, gene mapping has been also used to breed the barle y against net blotch.

Scald and net blotch are major foliar diseases of barley causing high yield losses worldwide including Ethiopia. Development of varieties with double resistance is an effective approach of managing both diseases.

However, the genetic background of the barley parents was not studied for future resistance : Zerihun Jalata, Firew Mekbib, Berhane Lakew, Seid Ahmed. Breeding resistant varieties is the best management strategy for net form of net blotch (NFNB) in barley (Hordeum vulgare L.) caused by Pyrenophora teres f.

teres (Ptt). Several resistance QTL have been previously identified in barley via linkage mapping and Author: Anil Adhikari, Anil Adhikari, Brian J. Steffenson, Kevin P. Smith, Madeleine Smith, Ruth Dill-Macky.

“It was also found to have novel resistance to scald, which was really exciting.” Despite being a Japanese barley line, Dr McLean said Yangsimai 3 was well adapted to local environments both agronomically and phenotypically.

“But its resistance to spot form of net blotch and scald is what initially caught our attention,” he said. Williams KJ, Lichon A, Gianquitto P, Kretschmer JM, Karakousis A, Manning S, Langridge P, Wallwork H () Identification and mapping of a gene conferring resistance to the spot form of net blotch (Pyrenophora teres f maculata) in by: varieties and breeding lines in the field for resistance to net blotch (Pyrenophora teres) and powdery mildew (Blumeria graminis hordei) and to provide information for a successful resistance–breeding program in spring barley under Lithuanian Size: KB.

Sixty nine barley lines from different barley breeding groups around Australia and elsewhere to identify sources of resistance for breeding. Most of these lines have some resistance to net blotch and some represent elite resistances (Gupta et al ).

Table 2 shows barley lines crossed with. Abstract In the search for stable resistance to spot form of net blotch (Pyrenophora teres f.

maculata, SFNB), asso-ciation mapping was conducted on four independent barley (Hordeum vulgare L.) breeding populations comprising a total of unique elite breeding lines from the Northern Region Barley Breeding Program in Australia for discov.

Spot blotch, caused by Cochliobolus sativus, is an important foliar disease of barley. The disease has been controlled for over 40 years through the deployment of cultivars with durable resistance derived from the line NDBCited by: Barley growers face net blotch resistance threat.

Dr Fran Lopez-Ruiz, leader of the Fungicide Resistance Group and colleagues at the Centre for Crop and Disease Management says the best tool to slow the development of fungicide resistance is integrated multiple disease prevention strategies.

This study was conducted to identify stable resistance to net form of net blotch (NFNB) in spring barley in Moroccan environments. Seedling resistance to NFNB was evaluated by inoculating barley genotypes with two NFNB isolates LDNH04Ptt‐19 and TD‐10 in the greenhouse.

The net form of net blotch, caused by Pyrenophora teres f. teres (Ptt), is an economically important disease of barley (Hordeum vulgare L.) that is best managed by breeding for resistance.

Previous linkage mapping and genome-wide association studies (GWAS) have identified many resistance quantitative trait loci (QTL) in by: 2. The net form of net blotch, caused by Pyrenophora teres (Ptt), is an economically important disease of barley (Hordeum vulgare L.) that is best managed by breeding for resistance.

Previous linkage mapping and genome‐wide association studies (GWAS) have identified many resistance quantitative trait loci (QTL) in barley. Resistance to these three isolates was not associated with awn type, esterase 1, and esterase 5.

Selection for resistance to WRS and WRS would be more effective than selection for resistance to WRS in a conventional breeding program.

Key words: Barley, Hordeum vulgare, net blotch, Pyrenophora teres, haploidsCited by: six-rowed line selected from a Tunisian national breeding program for its resistance to net blotch in the field.

The original cross was made at INAT (Institut National Agronomique de Tunisie) to carry out genetic study. Pathogen isolates and inoculum preparation Fresh leaves with Cited by: 1. The recent discovery of six barley genes that carry resistance to disease brings promise of another weapon to deliver improved varieties to Australian growers.

This discovery, the result of ten years of pre-breeding research carried out by Agriculture Victoria's cereal pathology team. Received: 15 October, Accepted: 7 January, Original Research Paper International Journal of Plant Breeding © Global Science Books Resistance of Wild Barley (Hordeum spontaneum, H.

marinumand H. murinum) to Pyrenophora teres and Rhynchosporium secalis causing Net Blotch and Scald Diseases in Tunisia Mejda Cherif* •Dhekra Chaouachi WissalFériani, Salah Rezgui.

Combine traditional resistance breeding and modern genomics. •“Given that RLS scores on different cultivars appear to have a continuous distribution, it is most likely that, mlo apart, resistance is polygenic, with many genes dispersed throughout the barley genome, each having a minor impact on disease.”.

The ACSESS Digital Library will not be available after Ma The journals, books and magazines published by the ASA, CSSA and SSSA are now hosted exclusively on the Wile.Initially small brown spots occur on leaves, sheaths and glumes.

These expand to narrow elongate brown streaks with occasional dark brown line running across the lesion giving a netted appearance.

Lesions may be surrounded by a yellow area. There is also a spot form of net blotch which looks like spot blotch. Spots can coalesce killing the leaf.Australian researchers have confirmed a new form of dual fungicide resistance in the common barley disease, net form net blotch (NFNB). They have identified a new genotype in NFNB that is – for the first time known – showing dual resistance to both a succinate dehydrogenase inhibitor (SDHI) fungicide as well as some DeMethylation Inhibitor (DMI) fungicides.