Axillary Shoot Proliferation from in Vitro Culture of Pulmonaria L. Shoots

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  • 1 Dept. of Horticulture, Univ. of Wisconsin, 1575 Linden Dr., Madison, WI 53706

Actively growing shoots from Pulmonaria L. `Roy Davidson' were cultured in vitro on Murashige and Skoog medium containing benzyladenine (BA) to establish proliferating cultures. BA at 0, 0.4, 0.8, 4.4, 8.8, and 44.4 μm was compared for shoot proliferation and rooting response. Shoot count was highest on 8.8 μm BA with root count highest on 0 or 0.4 μm BA. Subculture 4 weeks later of shoots to the same treatments resulted in highest shoot counts on 44.4 μm BA. Optimum level for micropropagation was 8.8 or 44.4 μm BA. Greatest rooting was at 0 or 0.4 μm BA.

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