Table 2.
Promotion of flowering in apple and pear seedlings by infection with Apple latent spherical virus vectors.
| Fruit trees | ALSV vectors | Genes for | No. of flowering/infected plants (%) | Flowering characteristics | ||
|---|---|---|---|---|---|---|
| Expression | Suppression | |||||
| Apple | ALSV-AtFT | AtFT | – | 2/12 (17) | One flower | |
| ALSV-AtFT/MdTFL1 | AtFT | MdTFL1-1 | 13/14 (93) | Continuous flowering | ||
| ALSV-AtFT/MdTFL1/R2 | AtFT | MdTFL1-1 | 12/12 (100) | One flower∗ or Continuous flowering | ||
| Pear | ALSV-AtFT | AtFT | – | 0/11 (0) | – | |
| ALSV-AtFT/MdTFL1 | AtFT | MdTFL1-1 | 9/27 (33) | Continuous flowering | ||
| ALSV-AtFT/PcTFL1 | AtFT | PcTFL1-1 | 6/7 (86) | Continuous flowering | ||
∗Most plants showing one flower lacked an FT insert in ALSV-AtFT/MdTFL1/R2 based on RT-PCR, suggesting that the inserted FT gene is unstable in ALSV-AtFT/MdTFL1/R2.