Kramers M R, Stebbings H
Chromosoma. 1977 May 23;61(3):277-87. doi: 10.1007/BF00292811.
Root tip mitosis in both Vinca rosea and the chosen control Lepidium sativum is susceptible to the effects of colchicine at and above 5X10(-4)M.--Root tip mitosis in L. sativum is susceptible to the effects of vinblastine at concentrations equal to and greater than 10(-4)M, while root tip mitosis in V. rosea, the plant which is the source of vinblastine, is unaffected by exogenously-applied VBL at concentrations up to and including 10(-2)M.--The possible mechanisms by which the resistance of V. rosea to vinblastine might be conferred are discussed.