Figure 1
Successful grafting and graft union (white arrow) indicate the grafting compatibility between scion and different rootstock accessions at 42 DAG
Table 1
The grafting incompatibility (mean ± SD) between scion, SDT3, and four tomato rootstock accessions measured 21, 28, 35, and 42 DAG
| Scion/rootstock combination | Days after grafting | |||
|---|---|---|---|---|
| 21 | 28 | 35 | 42 | |
| SDT3/SDT3 | 0.06 ± 0.02 | 0.07 ± 0.01 | 0.09 ± 0.02 | 0.11 ± 0.00 |
| SDT3/LE314 | 0.07 ± 0.01 | 0.07 ± 0.02 | 0.09 ± 0.00 | 0.14 ± 0.03 |
| SDT3/LE472 | 0.08 ± 0.00 | 0.08 ± 0.01 | 0.11 ± 0.01 | 0.15 ± 0.03 |
| SDT3/LE482 | 0.08 ± 0.00 | 0.10 ± 0.01 | 0.10 ± 0.02 | 0.12 ± 0.02 |
| SDT3/LE501 | 0.08 ± 0.01 | 0.09 ± 0.00 | 0.11 ± 0.01 | 0.13 ± 0.02 |
| F | ns | ns | ns | ns |
| CV (%) | 16.91 | 16.84 | 15.65 | 20.79 |
[i] F – the probability of F statistic from ANOVA, ns – nonsignificant differences
Figure 2
Plant height (A) and the number of branches, (B) of scion SDT3 grafted on SDT3 (self-grafted), and heterografted (SDT3/LE314, SDT3/LE472, SDT3/LE482, and SDT3/LE501)
Table 2
Fruit size (cm) and yield (g per plant) of scion SDT3 grafted on different tomato rootstocks
| Scion/rootstock combination | Fruit size (cm) | Fruit yield (g per plant) | |
|---|---|---|---|
| width | length | ||
| SDT3/SDT3 | 2.95 ± 0.6 | 3.29 ± 0.5 | 151.73 ± 6.7 |
| SDT3/LE314 | 3.01 ± 0.2 | 3.47 ± 0.2 | 157.36 ± 6.5 |
| SDT3/LE472 | 3.27 ± 0.1 | 3.66 ± 0.1 | 160.48 ± 8.3 |
| SDT3/LE482 | 3.27 ± 0.1 | 3.58 ± 0.2 | 156.25 ± 0.5 |
| SDT3/LE501 | 2.75 ± 0.1 | 3.17 ± 0.2 | 141.90 ± 17.7 |
| F | ns | ns | ns |
| CV (%) | 9.77 | 9.39 | 7.08 |
[i] F – the probability of F statistic from ANOVA, ns – nonsignificant differences
Figure 3
Expression level of peroxidase (Solyc02g084800.2) gene in self-grafted (LE472/LE472) and heterografted (SDT3/LE472) tomatoes at 4 and 15 DAG. The data were normalized using 18S rRNA gene to give the relative gene expression (mean ± SD), different letters above the bar are significantly different (p = 0.05), according to Tukey's test
Figure 4
The disease symptoms of mock- and Fol-inoculated nongrafted SDT3, self-grafted (SDT3/SDT3), and heterografted (SDT3/LE314, SDT3/LE472, SDT3/LE482, and SDT3/LE501) at 60 DPI. The nongrafted and self-grafted SDT3 showed a DSS of 5. All heterografted tomatoes showed a DSS of 1 (scale bars = 10 cm)