Abstract:
The paper presents the variability of the RNA content of a mature leaf
from the fertile of shoots belonging to the Grasă of Cotnari grape vine
cultivar, analysed in different phenological phases: unbudding, flowering,
ripening and full maturation of grapes. On constate that at unbudding, the
RNA content is maximum, because in this phases, the proteinic synthesis are
very intense. Starting with the flowering phenophase, the quantity of RNA is
decreasing rapidly. This phenomenon is directly correlated with the
increased intensity of the biogenesis processes of the cellular organites. At
ripening and full maturation of grapes, the RNA content diminish very much.
The variation of RNA content is big in the unbudding, flowering and full
maturation of grapes and very big in ripening phenophases. The values of
the RNA content of the leaves belonging to the Grasă of Cotnari cultivar
offer the possibility of analysing different factors regarding the complexity of
the genetic material of the studied genotype.
