Rosaceae
The data of selection of optimal variant of explants defertilization (sort «Tornfree») are given. The field material is shown to be undergone of internal infection more then a hothours one. It is also educed that a bigger explants develops better though it is more difficult to sterilize it. The stable growing sterile culture has been got for further research.
Some features of the anatomic organisation of annual runaway of some kinds from family Rosaceae are studied. The comparative analysis of sclerenchyma development (quantity of groups of fibres in a bark, number of cells in group) is presented.