Effects of pH and Phosphorus Concentrations on the Chlorophyll Responses of Salvia chamelaeagnea (Lamiaceae) Grown in Hydroponics

Abstract

Salvia chamelaeagnea (Lamiaceae) is a slow growing water-wise evergreen shrub originating from the western province of South Africa. It is an attractive landscape, and S. chamelaeagnea is a medicinal plant. It is important to develop enhanced cultivation protocols that could result in high yield and high-quality medicinal materials. Chlorophyll is a fundamental part of the light-dependent reactions of the photosynthesis process. This chapter investigates the effects of four phosphorus concentrations and three pH levels of supplied irrigated water on the production of chlorophyll A, chlorophyll B, total chlorophyll, leaf colour and the nutrient uptake of S. chamelaeagnea grown in hydroponics over an 8-week period at the Cape Peninsula University of Technology. The treatments of pH 4, pH 6 and pH 8 at 31, 90, 150 and 210 ppm of phosphorus were received by 12 groups of plants and were replicated 10 times. The results indicated that at pH 4, P fertilization significantly (P < 0.05) induced a higher chlorophyll production of S. chamelaeagnea grown in hydroponics compared to other pH treatments (pH 8 and pH 6).

Effect of augmented nutrient composition and fertigation system on biomass yield and cannabinoid content of medicinal cannabis (Cannabis sativa L.) cultivation

“…As a result, maintaining cellular phosphorus homeostasis is essential for ensuring the normal function of various physiological and biochemical processes ( Raghothama, 2015 ). The elevated P concentration observed in the 2C system compared to the 1C system may likely be attributed to an increase and fluctuations in pH within the 1C regime, a phenomenon in line with the findings of Lefever et al. (2017) .…”

Effect of Arbuscular Mycorrhizal Fungi And Some Phosphorus Sources on Growth, Seeds Yield, Chemical Compositions, Oil Productivity and Fixed Oil Constituents of Chia (Salvia hispanica L.) Plant

“…In the earlier studies in the literature, phosphorus (P) is required in relatively large amounts for the biosynthesis of primary and secondary metabolites (Marschner 2002), Seeds have the highest concentration of P in a mature plant, and P is required in large quantities in young cells, such as shoots and root tips, where metabolism is high and cell division is rapid (Khalid and Shedeed 2015). Phosphorus fertilization significantly induced a higher chlorophyll production of Salvia chamelaeagnea (Lefever et al, 2017). Pedone-Bonfim et al, (2018) reported that the plant growth is severely restricted at low P levels, but the addition of AMF appears to remove this limiting factor.…”

Characterization of Green Pigment from Sauropus androgynus Shoot Cultures

“…The production of chlorophyll in the plant could be influenced by an interaction of environmental factors with biochemical, physiological, and genetic characteristics of plant, such as the influence of environmental factors on chlorophyll production by Festuca arundinacea [20] and Salvia chamelaeagnea (Lamiaceae) [21]. Plant cell and tissue culture strategies are an attractive alternative to the use of whole plants for the production of pigments and have been the subject of extended research in the last decades.…”