Growth, Biomass Partitioning, and Photosynthetic Performance of Chrysanthemum Cuttings in Response to Different Light Spectra

Abstract

Chrysanthemum (Chrysanthemum morifolium) is among the most popular ornamental plants, propagated mainly through stem cuttings. There is a lack of information regarding the impact of the lighting environment on the successful production of cuttings and underlying mechanisms. The light spectrum affects plant morphology, growth, and photosynthesis. In the present study, chrysanthemum, cv. ‘Katinka’ cuttings, were exposed to five lighting spectra, including monochromatic red (R), blue (B) lights, and multichromatic lights, including a combination of R and B (R:B), a combination of R, B, and far red (R:B:FR) and white (W), for 30 days. B light enhanced areal growth, as indicated by a higher shoot mass ratio, while R light directed the biomass towards the underground parts of the cuttings. Monochromatic R and B lights promoted the emergence of new leaves. In contrast, individual leaf area was largest under multichromatic lights. Exposing the cuttings to R light led to the accumulation of carbohydrates in the leaves. Cuttings exposed to multichromatic lights showed higher chlorophyll content than monochromatic R- and B-exposed cuttings. Conversely, carotenoid and anthocyanin contents were the highest in monochromatic R- and B-exposed plants. B-exposed cuttings showed higher photosynthetic performance, exhibited by the highest performance index on the basis of light absorption, and maximal quantum yield of PSII efficiency. Although R light increased biomass toward roots, B light improved above-ground growth, photosynthetic functionality, and the visual performance of Chrysanthemum cuttings.

Data-Independent Acquisition Proteomics Reveals the Effects of Red and Blue Light on the Growth and Development of Moso Bamboo (Phyllostachys edulis) Seedlings

“…For example, the hypocotyls of Arabidopsis and tomato grown under red light are longer than those grown under blue light [ 18 ]; the chlorophyll content in leaves of rice seedlings grown under red light is lower than that under blue light [ 19 ]. The regulation of red and blue light for plant growth and development also differs between species: for example, the hypocotyls of cucumber grown under blue light are longer than those under red light [ 20 ]; the chlorophyll concentration in leaves from chrysanthemum grown under red and blue light is not significantly different [ 21 ]. However, the effects of different light qualities on the growth of moso bamboo seedlings have not been reported.…”

Increasing the ratio of red to blue light as supplemental light improves growth, photosynthesis, and yield of cut roses

“…Increase in anthocyanins content (2,19) and storage carbohydrates ( 19) by R light have been reported in rose and savory plants. Furthermore, increase in the amount of carotenoids and soluble carbohydrates by R light has been also reported in chrysanthemum cuttings (32). The ndings on the reproductive characteristics showed that by using supplemental light, marketability can be increased, which is more highlighted in plants exposed to R90B10 supplemental light treatments.…”

Effect of Red Visible Lighting on Postharvest Ripening of Bananas via the Regulation of Energy Metabolism

“…Usually, light absorption and capture by the plant are mediated by intracellular pigments. The ability of light-sensitive pigments, such as chlorophylls, carotenoids, and anthocyanins, to capture and absorb light is influenced by various factors, such as the light intensity, light quality, and light duration [22]. When intense light exposure exceeds the light energy absorbed and utilized by chlorophyll, the plant is in a state of excess light energy, which initiates a non-radiative energy dissipation pathway to consume the excess excitation energy.…”