5. YOUR LOGO
Traits
Sub-acid taste(D)
In general, the consumer acceptance is greater for sub-acid than
for acid cultivars
Sub-acid trait is especially important in early varieties: have
little time on the tree in between bloom and harvest time, that
they don’t have the ability to build up sugars. Sub-acid
compensate this lack of sugars
Sub-acid cultivars do not cover all the production season
6. YOUR LOGO
Sub-acid taste(D)
One gene responsible for the sub-acid trait
The sub-acid allele is dominant
Parents sub-acid 75% -100%
One parent sub-acid 50% -100%
X
7. YOUR LOGO
Sub-acid taste(D)
1580 peach varieties, from different origins genotyped
with 9,000 SNP
SNP_IGA_546094
Haplotypes (combination of SNPs) in D locus
Which are associated with the trait?
8. YOUR LOGO
Sub-acid taste(D)
* Possibility of some phenotypic errors
Trait
IRTA1
IRTA2
IRTA4
IRTA5
IRTA6
IRTA7
IRTA8
IRTA9
IRTA10
IRTA11
IRTA12
IRTA13
IRTA14
Averageofsuccess
Notes
D 100% 80% 97% 98% 92% 97% 89% 85% 97% 95% 86% 95% 98% 93%
G allele
associated
with the SAc
Large proportion of samples out or type
13. YOUR LOGO
High consumer demand
Breeding efforts required to fulfill quality
requirements
Flat/round Shape (S)
14. YOUR LOGO
• Flat allele is dominant
• Flat need to be in heterozygosis (fruits in
homozygous genotypes abort)
Genetics
SNPs in WP4
Pilot studies
Use of SNPs
Flat/round Shape (S)
Both parents flat
One parent flat
X
50% Flat 25% Round25% No fruit
50% Flat 50% Round
15. YOUR LOGO
1580 peach varieties, from different origins genotyped
with 9,000 SNP
Haplotypes (combination of SNPs) in D locus
Which are associated with the trait?
Flat/round Shape (S)
A A G
A A A
G G G
G A G
A G A
