Distribution and using of 14C - assimilates in plants with different mophological and physiological organization of sink-source system

The distribution and use of 14C - photoassimilates in perennial herbaceous stoloniferous plants Stachys sieboldi and Ajuga reptans were studied. The general patterns of changes in sink- source relations during the vegetative growth were established. It was shown that the directionality of the carbon transport flows in S. sieboldii and A. reptans is related to the growth of underground and above-ground shoots of renewal. This contributes to the formation of large clones that causes high competitiveness and survival of species.