The study of the genus Hydrangea L. representatives reproduction by cuttings in various environmental conditions in the Republic of Bashkortostan

The paper deals with the study results of the Hydrangea species reproduction by green and lignified cuttings based on the collection of the South-Ural Botanical Garden-Institute of the Ufa Federal Research Centre of the Russian Academy of Sciences. The purpose of the work is to study the reproduction by cuttings of species and varieties of the genus Hydrangea and to identify optimal environmental conditions for the most effective result of cuttings. During the experiments green cuttings were rooted in 5 different types of substrates (sand, peat, a mixture of sand and peat, a mixture of sand and perlite, a mixture of peat and perlite). As rooting stimulants Kornevin and Heteroauxin were used. The reproduction of Hydrangea by lignified cuttings was studied after various storage methods during winter. It was found that the maximum rooting percentage is obtained when peat is used as a substrate (rooting reaches 96,7%). The maximum root-forming ability when reproduced by green cuttings using rooting stimulants (Kornevin and Heteroauxin) was observed in H. arborescens (86,6-93,3%) and its varieties (79,8-96,5%). High results were obtained when tree hydrangea was reproduced by both green and lignified cuttings. The root-forming ability of lignified cuttings increases when they are stored during winter under snow.