Tumor and teratoma induction in tobacco plants by debudding.

Stem and root tumors and teratomata may be induced in tobacco plants (Nicotiana tabacum L., var. One Sucker) by total debudding. Intact plants or plants only decapitated produced no tumors or teratomata throughout their life time. These findings suggest a possibly important oncological relationship between normal growth and tumorous growth. Prevention of normal regeneration (apical and axillary shoot growth) incites pathological regeneration (formation of tumors and tumor shoots). Total bud killing or inactivation by ionizing radiation did not incite tumor or teratoma formation.