Table 2.
Conventional QTL analysis for heat tolerance-related physiological indexes in the F2 population
| Trait | CH | QTLa | Peak Position (cM)b | Flanking markersc | Location (Mb)d | LODe | PVE (%)f | Addg |
|---|---|---|---|---|---|---|---|---|
| REC | 1 | qREC-1-1 | 52.0 | W299-SL20134_408i | 24.10–80.54 | 11.59 | 6.70 | −0.13 |
| 1 | qREC-1-2 | 71.0 | SL20134_408i-SSR270 | 80.54–80.70 | 10.62 | 5.81 | −0.17 | |
| 1 | qREC-1-3 | 156.0 | SSR134 -C01M86371 | 81.64–86.37 | 3.78 | 5.75 | −0.15 | |
| 2 | qREC-2-1 | 47.0 | SSRD69-C02M48329 | 43.48–48.33 | 5.41 | 5.66 | −0.19 | |
| 3 | qREC-3-1 | 119.0 | C03M68619-C03M70037 | 68.62–70.04 | 3.24 | 1.04 | −0.05 | |
| 9 | qREC-9-1 | 18.0 | SSRD133-TGS1354 | 1.11–4.01 | 2.60 | 2.14 | 0.07 | |
| 12 | qREC-12–1 | 13.0 | SL10953_259i-SSRD80 | 3.79–36.67 | 9.13 | 5.70 | 0.18 | |
| CC | 1 | qCC-1-4 | 118.38 | C01M75064-SSR134 | 75.06–81.64 | 3.70 | 1.71 | −0.06 |
| 1 | qCC-1-5 | 160.66 | SSR134 -C01M86371 | 81.64–86.37 | 3.72 | 16.48 | 0.22 | |
| 2 | qCC-2-2 | 0.01 | SSR96-C02M4005 | 39.71–40.00 | 3.52 | 4.86 | 0.05 | |
| Fv/Fm | 5 | q Fv/Fm − 5-1 | 1.51 | SSR13-SSR115 | 2.53–2.73 | 2.50 | 6.94 | 0.18 |
| 12 | qFv/Fm − 12–2 | 80.29 | SSRD74- LeOH301 | 54.37–63.56 | 3.00 | 8.80 | 0.03 |
REC indicates relative electrical conductivity, CC indicates chlorophyll content, Fv/Fm indicates maximum photochemical quantum efficiency
The consistent QTLs qCC-1-5 and qREC-1-3 on chromosome 1 are shown in bold
athe QTLs for REC, CC and Fv/Fm are temporarily named ‘qREC, qCC and qFv/Fm + number of chromosome + number of QTL’
bThe position of heat tolerance-related QTLs
cFlanking markers of heat tolerance-related QTLs
dThe physical position of flanking markers linked with heat tolerance QTLs
ePeak LOD value of the QTL
fThe phenotypic variation explained by the putative QTL
gAdditive effect. A positive value indicates that the genes derived from heat tolerance parent LA2093 contributed to increased heat tolerance, and the negative value indicates that genes originated from LA1698 reduce the effect on tomato heat tolerance