Journey of net blotch: From pathotype diversity to useful resistance in barley

Gupta, Sanjiv, Loughman, Robert, Platz, G., Lance, Reg and Jones, Mike (2001). Journey of net blotch: From pathotype diversity to useful resistance in barley. In: 2001: A Barley Odyssey - Program Handbook / Abstracts. 10th Australian Barley Technical Symposium, Rydges Lakeside, Canberra, (37-37). 16-20 September, 2001.


Author Gupta, Sanjiv
Loughman, Robert
Platz, G.
Lance, Reg
Jones, Mike
Title of paper Journey of net blotch: From pathotype diversity to useful resistance in barley
Conference name 10th Australian Barley Technical Symposium
Conference location Rydges Lakeside, Canberra
Conference dates 16-20 September, 2001
Proceedings title 2001: A Barley Odyssey - Program Handbook / Abstracts
Place of Publication http://www.regional.org.au
Publisher The Regional Institute Ltd
Publication Year 2001
Sub-type Fully published paper
Open Access Status
ISSN 1030-5408
Start page 37
End page 37
Total pages 1
Collection year 2001
Language eng
Abstract/Summary Studies on variation, occurrence and distribution of virulence in Pyrenophora teres f. teres are essential to identify effective sources of resistance for net type net blotch. Disease surveys suggested two different stains are prevalent in Western Australia and 13 in all around Australia. Sixty nine barley lines from different breeding groups in Australia and elsewhere were tested against most prevalent pathotypes. Majority of lines have partial to complete resistance while some have elite resistances to net type net blotch. Four lines out of 69 were chosen for further studies. These four lines: WA 4794 (103 IBON 91), Pompadour, CI 9214, and WPG 8412-9-2-1 were highly diverse and resistant to most of the isolates, and were crossed with Stirling-a highly adaptive but susceptible cultivar. Doubled haploids, F2s, and resistant x resistant crosses were studied against five prevalent isolates. Four genes from WA 4794 (all dominant), three (two dominant and one recessive) from Pompadour, five (two dominant and three recessive) from CI 9214, and two (one dominant and one recessive) from WPG 8412-9-2-1 were identified. In total, 11 different genes were operative against P. teres f. teres isolates. Molecular work is initiated to develop markers which would aid screening of the breeding populations for these resistances.
Subjects EX
300203 Plant Improvement (Selection, Breeding and Genetic Engineering)
620102 Barley
Keyword net blotch
barley
Pyrenophora teres f. teres
Q-Index Code EX

Document type: Conference Paper
Collection: School of Agriculture and Food Sciences
 
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Created: Fri, 24 Aug 2007, 00:27:21 EST