Abstract
Shoot regeneration and normal plants were obtained from leaf and petiole explants derived from in vitro grown shoots of Vitis X labruscana 'Catawba'. Regeneration was induced in the presence of both 6-benzylaminopurine and indole-3-butyric acid; combinations of 2,4-dichlorophenoxyacetic acid or 2-naphthoxyacetic acid with 6-benzylaminopurine did not permit regeneration from leaf explants. Up to 15% of leaf and 70% of petiole explants regenerated shoots on media with 5.0-10.0 μM BA and 0.1-0.5 μM IBA. Incubation in the dark was required to obtain regeneration. About 50% of shoots developed normally following transfer to light. An average of one shoot regenerated from leaf explants and 3.3 shoots regenerated per petiole explant. Regeneration from petioles and leaves was always from the basipetal end. The interaction of 6-benzylaminopurine with indole-3-butyric acid was also examined.
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