EFFECT OF DROUGHT STRESS ON THE PRODUCTIVITY OF IVY TREATED WITH RHIZOBACTERIUM BACILLUS SUBTILIS

A. Wolter, F.-G. Schroeder
For the purpose of year-round benefits the use of evergreens in façade greenery is very attractive. Living walls, soilless façade greenery systems, aroused market interest mainly during the last five years. The living walls usually work as hydroponics, with a luxury providing of water. But there are a few reasons to limit the provided amount of water. Unlimited water access for the plant causes worse tolerance to cases of irrigation damage. Technical or human failure often induces drought stress. Regions of cold continental climate e.g., Central Europe require high winter hardiness. For those reasons a tolerant individual of evergreen plant is needed. Ivy, although being a Mediterranean species, is the best known evergreen climbing plant with adequate frost hardiness.
Therefore, in the absence of other suitable plant species, it should be the aim, to harden ivy plants by promoting the plants’ own adaptation strategies, so that they can withstand abiotic stress. This work examines the degree to which Hedera helix ‘Woerner’ can be influenced with regard to drought tolerance; H. helix ‘Woerner’ is considered to show particularly more hardiness than other cultivars. Several researchers (Dipmka et al., 2009; Bochow et al., 2001) viewed bacterially mediated plant tolerance to abiotic stress in different crops. Based on Bochow’s experience on Bacillus subtilis, this inoculant shall be tested in various concentrations to prove the hypothesis that it has a significant positive effect on the drought tolerance of H. helix ‘Woerner’. It is suggested that there are reliable positive effects especially on root growth.
Wolter, A. and Schroeder, F.-G. (2013). EFFECT OF DROUGHT STRESS ON THE PRODUCTIVITY OF IVY TREATED WITH RHIZOBACTERIUM BACILLUS SUBTILIS. Acta Hortic. 1004, 107-113
DOI: 10.17660/ActaHortic.2013.1004.11
https://doi.org/10.17660/ActaHortic.2013.1004.11
hydroponics, tolerance, irrigation, frost, modification, hardiness, abiotic stress
English

Acta Horticulturae