Indicators of the water regime of <i>Hemerocallis</i> L. during the introduction in the South Ural

The paper deals with the parameters of the water regime of Hemerocallis L. during cultivation in the forest-steppe zone of the Bashkir Cis-Ural. The experiments were carried out on the basis of the laboratory for the introduction and selection of floral plants of the South-Ural Botanical Garden-Institute UFRC RAS. The objects of the study were representatives of the generic complex Hemerocallis L.: H. citrina Baroni, H. dumortieri E. Morren, H. fulva (L.) L., H. lilioasphodelus L., H. middendorfii Trautv. et C.A. Mey., H. minor Mill. Water deficit and relative turgidity were found by the method of saturation of plant samples according to methodological guidelines. It was revealed that in May the water deficit in the leaves of daylilies ranged from 3,43% (H. middendorfii) to 18,01% (H. fulva). Over the entire observation period, the greatest value of the water deficit was noted in H. fulva in May at 19:00, and the smallest in H. minor in August at 05:00. As a result of the correlation analysis, the following was revealed: a direct relationship between water deficit and air temperature and an inverse relationship with the relative humidity of the air. Three groups of Hemerocallis were identified according to the relationship between daytime fluctuations in water deficit and meteorological factors.