Physiological Aspects in Propagation of Ninebark (<i>Physocarpus opulifolius </i> Maxim. ‘Red Baron’) by Stem Cuttings Treated with Auxin or Biostimulator

Abstract

Recently, a trend can be observed to replace plant protection chemicals in nursery production by products of natural origin. Such products increase plants' resistance to stressful conditions and lower their susceptibility to pathogens. They may also offer an alternative to chemicals stimulating rhizogenesis. The aim of this work was to evaluate the effects of foliar applications of AlgaminoPlant, a biostimulator based on a seaweed extract, relative to auxin-containing preparations, on root growth in stem cuttings of common ninebark (Physocarpus opulifolius). Cuttings were sprayed with water solution of IBA or AlgaminoPlant once, twice or three times during the rooting period at one week intervals and powder IBA was also applied directly to the bases of cuttings. The best rooting was observed after powder IBA application and satisfactory results were observed for AlgaminoPlant and aqueous IBA solution. Treatments with AlgaminoPlant and IBA increased photosynthetic efficiency, chlorophyll contents, total soluble sugars, soluble proteins, indole derivatives and catalase activity while the hydrogen peroxide level and peroxidase activity were reduced. The effects of AlgaminoPlant on rhizogenesis were comparable to synthetic IBA, or only slightly lower. Hence, if needed, synthetic auxin IBA may be replaced by AlgaminoPlant which is considered an environmentally friendly product.

The Role of Plant Origin Preparations and Phenological Stage in Anatomy Structure Changes in the Rhizogenesis of Rosa “Hurdal”

“…Plant origin preparations could positively influence changes in the condition of cuttings and the content of bioactive components in roses Pacholczak, 2018, 2019;Monder et al, 2020) due to supplementation with nutritive substances or unknown rooting cofactors and IAA-like substances present in the bio preparations (Nardi et al, 2015;Oosten et al, 2017). Most bio preparations of plant origin contain different substances similar to auxins in various concentrations (Crouch and Van Staden, 1993;Thorsen et al, 2010;Pacholczak et al, 2016).…”

Comparison of the Effect of Meta-Topolin and Benzyladenine during Daphne mezereum L. Micropropagation

“…The same effect was observed in Sesamum indicum L. where shoots obtained on a medium with BA showed significantly higher H 2 O 2 content than those with mT [42]. On the other hand, Pacholczak et al [54] observed that hydrogen peroxide levels dropped in 'Red Baron' cuttings treated with an aqueous solution of the IBA auxin. It is well known that H 2 O 2 directly reduces plant growth and, similarly to stress factors (e.g., increased levels of heavy metals in the medium), inhibits the activity of antioxidant enzymes [55].…”

The Effect of Biostimulators and Indole-3-Butyric Acid on Rooting of Stem Cuttings of Two Ground Cover Roses

“…The IBA-containing preparation Rhizopon AA and the water IBA solution positively affected the degree of rooting and the percentage of rooted cuttings in deciduous leafy shrubs (Pacholczak et al, 2016). Both forms of IBA application, the powder containing 1% IBA and the foliar application of the water IBA solution (200 mg L −1 ), improved rooting in both cultivars of ground cover roses.…”

“…Biostimulators may be an alternative to the auxin-based rooting enhancers Pacholczak et al, 2016). They contain active substances of natural origin or microorganisms and when applied to plants, they stimulate life processes occurring at every level of biological organization.…”