2nd iwsrs rajaram

290 views

Published on

Published in: Business, Technology
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
290
On SlideShare
0
From Embeds
0
Number of Embeds
3
Actions
Shares
0
Downloads
8
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

2nd iwsrs rajaram

  1. 1. S. RAJARAM RESOURCE SEEDS INTERNATIONAL CONSULTANT-ICARDA BARLEY IMPROVEMENT PROGRAM 2nd International Wheat STRIPE RUST SYMPOSIUM IZMIR TURKEY 28th April – 1 May, 2014 A BREEDER´S REFLECTION ON GLOBAL YELLOW RUST OF WHEAT
  2. 2. My Own Experiance on YR Breeding in Wheat & Barley  1969-1996 Cimmyt Wheat-Mexico  2004-2014 RSI Wheat- Mexico  2008-2012 ICARDA Wheat-Syria  2006-2009 RSI Wheat-California  2006-2014 SFC Wheat-India  2010-2014 ICARDA Barley-Mexico
  3. 3. Vulnerability of Modern Wheats in Indian Subcontinent & countries of CWANA (Silk Road)  India, Pakistan, Afghanistan, Iran, Turkey, Syria, Uzbekistan, Kirgistan, Turkmenistan, Egypt, Tunisia, Algeria, Morroco, Ethiopia.
  4. 4. Landmark Varieties Attila, Kauz and Veery´s & their Derivatives - Higher yield > 20 % - Higher level of drought & heat Tolerance compared to previous varieties (1B/1R) - Higher level of Stability of Performance in Farmer Fields - High degree of HLB & other Foliar Blight Tolerance
  5. 5. Epidemiology of YR in Subcontinent and CWANA  Pathotypes movement well documented  Inportance of local mutation less appreciated  Races in YR well documented through countries & Reginal labs  Balance between virulance spectrum & aggresssiveness less understood  Adaptation of YR Races to higher temperatures not very well apreciated
  6. 6. Genetics of YR Resistance  Multiple genes & alleles have been identified  Genetic interactions of these genes less understood  Role of slow Rusting to YR and its effectiveness in most vulnerable region such as CWANA not clearly defined
  7. 7. Durable YR Resistance  Varieties Ciento Cincuenta (Ecuador), little joss (England) and Capelle Deprez (France) and others have demonstrated long term durability  Perhaps minor genes operating but difficult to manipulate these genes  Modern Varieties Pavon 76 & Attila (PBW343) have some degree of partial resistance but not adequate
  8. 8. Breeding for YR Resistence  Identify geographical based resistant genotypes  Heavy epidemics of YR in Breeding nurseries with a mix of races
  9. 9. My Own Experiance & Expectation - Spring x Winter crosses Atilla = Nordeprez/CIMMYT & Indian advanced lines Veery = Kavkaz/CIMMYT lines - Exploitation of Aegilops as in RSM-NORMAN F2008 - CIMMYT advanced lines x California lines
  10. 10. My Recommendations to Breeding Institutions & Farmers  A good level of YR Resistance in varieties  Chemical control ( 1 aplication on resistant varieties; 2 aplications on susceptible ones)  This recommendation to farmers would prolong the life of effective genes, avoid catastrofic epidemic and economic loss
  11. 11. Thank you

×