Into chromosome cuatro, most of the around three QTLs was basically at 66
Container plots of land proving the effects of marker genotypic categories (AAAA, AAAB, AABB, ABBB, BBBB) out of 4 candidate SNPs with the tuber sugar quantity (GLU); bud-stop fry colour (FBE); stem-tuber fry colour (FSE); ID, Idaho
The newest co-localization off numerous QTLs at readiness locus area inside analysis is actually similar to the observed activities of phenotypic correlations. 01) with many faculties overlapping a comparable genetic reputation (Fig. 1). As an example, EBID11 and you can VWID11 scores both showed a strong negative relationship having MAT95ID and you may MAT120ID. It pattern could possibly get give an explanation for biggest effect QTL which have after readiness directly of escort services in Everett the postponed start of VW and you may EB, or simply, very early readiness causing very early start of VW and EB. A fairly highest correlation has also been noticed anywhere between vine maturity and you may development routine, with early readiness associated with the way more distributed increases practice. On the other hand, a decreased correlation (roentgen ? 0.2) between vine readiness and you may one another tuber glucose concentration and you will bud-avoid fry color is actually consistent with the latest models of into the QTL effects.
Tuber sugar, bud-end and you may stalk-stop fry colour
Including chromosome 5, high QTLs for glucose, bud-avoid and you can stem-avoid fry color was identified when you look at the overlapping aspects of chromosomes cuatro, six, 10, and 11. 0 cM to your LOD scores anywhere between 4.five to six.0 (Desk step 3, Fig. 4). This type of QTLs informed me ranging from eight.2 and you will 11.3% of the characteristic difference. Study of different easy habits indicated just one most readily useful-fitted model for all about three characteristics, which have a double-simplex allele (AAAB ? AAAB) to your homologous chromosomes H2 and you will H5 out-of RGR and you can Public relations, correspondingly (Table 3, Most document 8: Contour S4). For sugar, new B allele is actually of the highest sugar amount, if you are to have bud-avoid and base-prevent fry colour, the existence of the new B allele shown straight down reflectance viewpoints (Fig. 3b).
LOD get shipment out-of QTLs for three characteristics across the twelve potato chromosomes (Chr). Abbreviations try as in Fig. 1
A candidate SNP for a double-simplex configuration on H2 and H5 is solcap_c2_12976 at position 67.4 cM. On the reference PGSC v4.03 Pseudomolecules, this SNP maps to the long arm of chromosome 4 at position 69.1 Mb on the F-box and WD40 domain protein gene (PGSC0003DMG400003339), which is close (< 2 Mb) to several genes associated with starch/sugar inter-conversion as annotated in the potato reference genome, and/or associated with tuber quality traits . They include alpha amylase (AMY-4/1 PGSC0003DMG400007974, AMY-4/2 PGSC0003DMG400009891), hexose transporter (HT-4/3, PGSC0003DMG400009994), invertase (NV-4, PGSC0003DMG400009936), and starch branching enzyme I (SBE I, PGSC0003DMG400009981).
On chromosome 6, significant QTLs mapped at 53 cM for glucose and at 43 cM for FBE and SBE, respectively. The LOD profiles ranged from 5.4 to 7.6 and explained between 10.8 and 16.1% of the trait variance, respectively (Table 3, Additional file 9: Figure S5). The best model for all three traits was a double-simplex configuration with allele effects on H2 and H5. As in chromosome 4, the presence of the B alleles was associated with an increase in glucose concentration and a decrease in reflectance readings (Fig. 3c). There are four candidate SNPs with a double simplex configuration nearby (solcap_snp_c2_33777, solcap_snp_c1_10130, solcap_snp_c2_5769, solcap_snp_c2_56145, c1_3003). All were significantly (P-value < 0.0001) associated with the mean trait values, however, solcap_snp_c2_56145 had on average the highest percent of variance explained (9% to 16%). The SNP solcap_snp_c2_56145 maps at position 51.4 Mb of the potato reference genome on the ATP binding protein gene PGSC0003DMG400033089. This SNP is located in a region (
7 Mb) containing several genes for the starch/glucose inter-conversion along with hexokinase (HXK-6, PGSC0003DMG400016521), fructokinase (FRK-6/1, PGSC0003DMG400027017, FRK-6/2, PGSC0003DMG400026916), and you may invertase (INV-na-6/step 1, PGSC0003DMG400026107, INV-6/2, PGSC0003DMG400033142) family genes.
