The Spectral Irradiance, Growth, Photosynthetic Characteristics, Antioxidant System, and Nutritional Status of Green Onion (Allium fistulosum L.) Grown Under Different Photo-Selective Nets

Abstract

The active regulation of the plant growth environment is a common method for optimizing plant yield and quality. In horticulture today, light quality control is carried out using photo-selective nets or membranes to improve the yield and quality of cultivated plants. In the present study, with natural light as the control (CK), we tested different photo-selective nets (white, WN; blue, BN; green, GN; yellow, YN; and red, RN) with 30% shade for characteristics of growth, development, quality, yield, photosynthesis, and chlorophyll fluorescence, considering the antioxidant system, as well as the influence of element absorption and transformation of green onion (Allium fistulosum L.) plants at different growth stages. We found that plants under BN and WN have greater height and fresh weight than those of plants under the other nets. Plants under the BN treatment had the highest quality, yield, photosynthetic pigment content, net photosynthetic rate, transpiration rate, and stomatal conductance, whereas the intercellular CO2 concentration was the highest in plants in the YN treatment. The photosynthesis noon break phenomenon was significantly lower in plants with covered photo-selective nets than in CK plants. NPQ was the highest in the YN treatment, and Fv/Fm, ΦPSII, and qP among the plants in the other treatments were different; from highest to lowest, they were as follows: BN > WN > CK > RN > GN > YN. The active oxygen content of green onion leaves in the BN treatment was significantly lower than that in the other treatments, and their key enzyme activity was significantly increased. BN also improved the absorption and transformation of elements in various organs of green onion.

In vivo Studies on the Effect of Warburgia ugandensis Crude Extracts Against Bacterial wilt in Tomato

“…W. ugandensis crude extract obtained from the stem bark and leaf using different organic solvents may have had a synergistic effect by stimulating tomato plants' growth through decreased retarding effect of R. solanacearum. These results concur with those of [63,64] Gao et al, (2021 [1]) and [1] Marey & Elmasry, (2024) that treatment of tomato plants with A. fistulosum crude extract increased the height of tomato plants.…”

Nutrient composition and functional constituents of daylily from different producing areas based on widely targeted metabolomics

“…However, different growing environments significantly affect the quality of plants (vegetables or herbs) ( Gao et al, 2021 ). In particular, the average annual temperature in different regions of Shanxi Province increases from the north to the south and decreases from the basins to the high mountains ( Xu et al, 2020 ).…”

Integrated multi‐omic data and analyses reveal the response pathways of green onion (Allium fistulosum L.) to high‐temperature stress

“…The present study showed that MDA content increased with high‐temperature stress, indicating that oxidative damage to green onions increased under high‐temperature stress, which was more evident in thermosensitive green onions. In addition, the antioxidant enzyme system could respond according to the degree of stress to which the plant is subjected (Gao et al 2021). This study showed that with the increase of high‐temperature stress time, the activities of SOD and POD in green onion plants increased, and the enzyme content in the heat‐tolerant variety was lower than that of the heat‐sensitive variety at the same period, which was consistent with other studies (Guo et al 2020, Sattar et al 2020, Su et al 2022).…”