Abstract

Factors affecting adventitious root formation were studied in explants of juvenile and adult Quercus robur ‘Fastigiata’. Rooting occurred only in expiants taken from succulent and young shoots. Long time subculturing of adult shoots (4 yrs) did not change the rooting behaviour. Continuous darkness was essential for rooting. Root formation occurred only when sugar, auxin and macrosalts were present in the medium. Under a special set of conditions, rooting can easily be induced in leaf and stem explants originating from a 30-yr-old adult oak tree.

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