[The effect of barbital on golgi bodies in meristematic root tip cells of allium sativum L].

In meristematic root tip cells of Allium sativum L. treatment with barbital under appropriate conditions results in a marked increase in the number of Golgi cisternae and a progressive decrease in the rate of release of Golgi vesicles. Connections between endoplasmic reticulum and Golgi bodies, indicated by OsO4 staining, which presumably involve transitional vesicles are not disrupted. The significance of multivesicular bodies containing small Golgian vesicles is discussed. The results show that formation of Golgi cisternae from endoplasmic reticulum is still possible but that their maturation with production of elaborated substances is progressively inhibited.