Apple_Haplotype_Rymenants_2020

Project Overview
Project Name Apple_Haplotype_Rymenants_2020
Description Acidity and sweetness are important qualities for apple breeders and understanding their genetic regulation can improve the breeding process. In previous QTL studies, fruit quality assessments were performed using instrumental measurements, leading to the identification of two major QTL Ma and Ma3. Here, we use sensorial data to investigate the role of known and unknown genetic factors in the perception of acidity and sweetness in three pedigreed full-sib families. For 2 years, these families were phenotyped by a trained panel, at harvest and after 2 months of cold storage, and genotyped with a new 50 K SNP array. FlexQTLTM analyses using both an additive and an additive + dominance model resulted in the identification of Ma and Ma3 for acidity as well as sweetness, whereas the use of the additive model yielded decisive evidence for the discovery of two additional QTL on LG1 and LG6 for acidity. QTL genotypes were qualified as the inverse of each other, which indicates that individuals with the less-acidity alleles of Ma and Ma3 are perceived sweeter. Due to the genetic configuration in the families studied, resulting from a link with the Pale Green Disorder locus, no incomplete dominance effect could be detected for the Ma locus, although previously reported in the literature. For the Ma3 locus, however, an incomplete dominance effect (58%) is reported here for the first time. The Ma3 locus was also further confined to a 2–4-cM region and a predictive marker for this locus was identified.
Crop apple
Project type genotype
Sub type haplotype
Genetic Maps
This project contains 4 Maps:
Name
Apple-NC-F1
Apple-ZF-F1
Apple-BB-F1
Apple-NCZFBB-consensus
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1
Stocks
This project contains 452 stocks:
NameType
Maigoldaccession
Spartanaccession
Telamonaccession
Telamon_x_Braeburn-F1population
Starkrimson_x_Granny Smith-F1population
Golden Delicious_x_M floribunda 821-F1population
Tsugaruaccession
Jonagoldaccession
Golden Deliciousaccession
Fujiaccession
Empireaccession
Galaaccession
Elstaraccession
Cripps Pinkaccession
Orinaccession
Deliciousaccession
Fiestaaccession
Ingrid Marieaccession
Braeburnaccession
Greensleevesaccession
Sansaaccession
Glosteraccession
James Grieveaccession
Cripps Redaccession
Ambrosiaaccession
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1
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Contact
NameDetails
Marijn Rymenants
First name:Marijn
Last name:Rymenants
Title:researcher
Institution:Better3fruit
Address:Steenberg 36, 3202 Rillaar
Email:marijn@better3fruit.com
Phone:+32 (0)16 24 16 10
Keywords:genetics