Elimination of a Bud Union Abnormality of Sweet Orange Grafted on Rough Lemon by Shoot-tip Grafting in Vitro
A bud union abnormality of several old line sweet orange varieties grafted on rough lemon rootstock was observed for the first time in Spain in container-grown plants. Shoot-tip grafting in vitro was carried out on these varieties as part of the standard procedure in the Spanish Citrus Variety Impro...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | conferenceObject |
| Language: | Inglés |
| Published: |
IOCV
2021
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| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.11939/7781 |
| Summary: | A bud union abnormality of several old line sweet orange varieties grafted on rough lemon rootstock was observed for the first time in Spain in container-grown plants. Shoot-tip grafting in vitro was carried out on these varieties as part of the standard procedure in the Spanish Citrus Variety Improvement Program. Ten propagations from a micrografted source of Cadenera punchosa sweet orange on rough lemon growing in containers under outdoor conditions were found free of symptoms after 6 yr. Ten similar propagations graft-inoculated with the parent source and ten propagations made directly from the parent showed the bud union abnormality after 6 yr. These results indicate that the bud union abnormality observed in several varieties was produced by a graft-transmissible agent and that it could be eliminated by shoot-tip grafting in vitro. |
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