SUMMARY

The research which is subject of this work is a supplement to the research work in the field of physiology of growth and development. In this work, the dynamics of the total dry mass of leaves, the part a bove ground and root is determined for the combination cultivar/rootstock of different exuberance (cultivar Idared and Golden Delicions on the rootstock : M9, M26 and MM106). The total dry mass of leaves on tree with the exuberance increase of the rootstock has a tendency to decrease : for the Golden Delicious : b = - 40.090, and for the Idared : b = - 21,222. The total dry masse of the part above ground with the exsuberance increase of the rootstock has different tendencies, the tendencies, the tendency of incerease b = + 60.630 for the Idared, and the tendency of decrease b = - 27,810 for the Golden Delicious. The total dry mass of the root with the exuberance increase of the rootstock has a tendency to increase for both cultivar, for the Idared : b= + 21,516, and for the Golden Delicious : b = + 48,870.