Study of remote cherry hybrids as clonal rootstocks in the garden

The aim of the research was to study new remote cherry hybrids in orchard conditions as clonal rootstocks obtained as a result of target crossings of cherry cultivars and East-Asian species and to identify the best ones on a complex of economically valuable traits for further using in production. The influence of the rootstocks on the plant growth and development of "Novella" and "Turgenevka" cultivars is shown in different scion-rootstock combinations. There were no significant differences in the yield of "Novella" on the studied rootstocks. The productivity of "Novella" on the studied scion-rootstock combinations ranged from 14.1 to 19.4 kg per tree. In the cultivar "Turgenevka" this indicator in rootstock samples 74332, 74336 and 74340 was at the level of the control: 8.8-12.4 kg per tree and the lower value was manifested in the combination with 74324: 6.0 kg per tree. Good biometric indicators of growth and development were in ‘Novella’ on all of the studied combinations. In "Turgenevka" these indicators were lower on all the forms under the study. So, it can be concluded that the forms are not suitable for "Turgenevka" cultivation. Also, scion-rootstock combinations of "Turgenevka" on the forms 74324 and 74336 showed incompatibility, there was a break in the place of accretion. "Novella" had a higher growth of annual shoots than "Turgenevka" in all combinations. On the whole the best rootstocks among the studied ones for ‘Novella’ are 74332, 74324 and 74336 and for "Turgenevka" - 74332 and 74340.