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EN
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.
EN
It has been found that during the 14 days period of germinatlon and development of corn the RNA content in the whole root increased almost 4 times in comparison with the control root (2 days). These changes are statistically significant. The highest increase of the RNA content and the dry mass of the root has been observed during the first 6 days of development. The araount of rRNA and tRNA has changed in the same way. The rate of the increase of their content in comparison with the control root (2 days) was eąual and it suggest that in the tested period of development the rRNA and tRNA are synthetised with equal speed.
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