Abstract
Increasing interest in landscape use of Aronia arbutifolia and A. melanocarpa has led to the establishment of breeding programs and selection of improved phenotypes within the genus. A rnicropropagation system was developed to facilitate rapid and easy multiplication of improved forms of Aronia. Actively growing shoot tips of A. arbutifolia `Brilliantissima' and A. melanocarpa were used to initiate shoot proliferation from axillary buds. Optimum proliferation of shoots useful for micropropagation occurred on media supplemented with 0.5 to 1.0 mg 1-1 benzyladenine. Both Murashige and Skoog medium and Woody Plant medium supported vigorous shoot proliferation, but differences in culture morphology were evident. In vitro rooting and non-sterile rooting methods both resulted in high rooting percentages, the formation of numerous roots and subsequent rapid growth of plantlets.
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