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GRM 2013: Maize product catalogue and project status -- Projects ongoing, completed, and to be continued post-2014 -- BS Vivek

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GRM 2013: Maize product catalogue and project status -- Projects ongoing, completed, and to be continued post-2014 -- BS Vivek

  1. 1. Maize Group Report Back
  2. 2. ACCI: Incorporation of an MSV resistance gene into Mozambican maize varieties, mediated by use of MAS WHAT When Output Year Period 1. F7 advance to F8 2013 April - Sept 56 2. F5 advance to F6 2013 Jun - Nov 30 3. F8 advance to F9 2013-14 Nov - April 56 4. F6 advance to F7 2013-14 Nov - April 30 5. Phenotyping F6 & F8 lines 56 a) Confirmation of MSV resistance 2013-14 Nov - April Data b) Inbred line trials 2013-14 Nov - April Data 6. Testcross hybrid trials 2013-14 Nov - April Data 7. Releasing inbred lines 2014 May - June 10
  3. 3. QTL-based MAS and GS QTL Detection  QTLs are localized to marker intervals and their effect sizes estimated.  QTLs are ranked by effect size. Those with largest effects are “declared” significant. QTL application  QTL Pyramids  Marker Assisted Recurrent Selection (MARS)  QTL detection relies on significance tests. Majority of the small variations ignored  Beavis effect: exaggerated QTL effect estimates  Good x Bad - Biparental populations do not readily translate into breeding applications  In low heritability trials, often no QTLs are detected for complex traits!
  4. 4. Looking further ahead: AMDROUT to AAA (Affordable, Accessible, Asian Drought Tolerant Maize Project)  Syngenta Foundation for Sustainable Agriculture (SFSA)  Partnership with NARS and Syngenta  Bigger in scope: discovery to delivery  More populations under MARS-GWS in addition to other activities  Identification of target markets  Development to dissemination  Details of seed production: requirements, plans, characteristics of inbred parents

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