Badania poziomu RNA podczas kiełkowania i wzrostu korzenia kukurydzy (Zea Mays L.). II. Zmiany poziomu RNA w wierzchołku korzenia

During the 14 days period of development of the corn root the decrease of dry mass, ribosomal and Iow molecular RNA content was observed in the 10-mm root tip. The changes are statistically significant and they are of higher values during the first 4 days of germination. The continuous decrease of the dry mass content and RNA suggests that during the tested period of time the number of cells decreases, probably because of the reduction of the meristemic zone.