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1. Mapping for Marker Assisted Selection
3. Genetic Mapping U.S. germplasm
‘Beauregard’ x ‘Tanzania’
‘Beauregard’ x ‘Wagabolige’
2nd generation linkage map
AFLP, ISSR, microsatellites
Anchor loci
Marker assisted breeding
Quality traits
Resistances
4. Genetic Mapping ‘Beauregard’
Orange fleshed
Susceptible
Short growth period
‘Tanzania’ and ‘Wagabolige’
Pale flesh color
SPFMV resistant
Highly RKN resistant
Long growth period
5. Genetic Mapping
6. Parental Genotypes
18. Quantitative Traits Polygenic inheritance
Continuous gradient
Normal distribution
Yield, sugars, starch etc.
Additive and dominance effects
Interval analysis
Single point analysis
19. QTL analysis QTL analysis using WinQTL cartographer
Proc CORR (SAS v9.1)
Proc GLM (SAS v9.1)
Framework map based on SD AFLP markers
Drawings in MapChart v2.1
21. QTL analysis QTL analysis using WinQTL cartographer
Proc CORR (SAS v9.1)
Proc GLM (SAS v9.1)
Framework map based on SD AFLP markers
Drawings in MapChart v2.1
22. RKN – Linkage group T41
23. QTL for RKN resistance
24. QTL for RKN resistance (cont’d)
26. QTL for RKN resistance
27. Bacterial artificial chromosomes Genomic libraries
Physical mapping
Large insert sizes up to ~150-200kb.
Low copy
“Big plasmids”
29. Physical mapping
31. Peach mapping General Prunus map
Includes peach, almond, apricot
Nearly 1000 molecular markers
Over 2200 mapped ESTs (genes)
Sosinski lab contributed 400
Physical mapping underway
DOE funded peach genome sequencing
32. Marker assisted selection
35. Comparative Genomics
36. Comparative Genomics
37. Comparative Genomics
38. Comparative Genomics