Akademik Veri Yönetim Sistemi
GESUNDE PFLANZEN, cilt.75, sa.4, ss.1017-1029, 2023 (SCI-Expanded)
This study investigated the effect of melatonin (MEL) application on pepper plants grown in calcareous environments at different growth stages. High pH negatively affects mineral nutrient uptake. The possible effects of exogenous MEL application on mineral nutrient uptake were investigated in pepper plants exposed to pH stress. In the experiment, the Miray pepper cultivar seedlings were used, and 0 and 5 mu M MEL were applied to the seedlings at the stage of 4 full leaves. Two days after application, seedlings were planted in 5-liter pots to which 0, 1, and 4% agricultural lime (CaCO3) were added to the 1:1 (w:w) peat: perlite mixture. Leaf and root samples were taken twice, 30 days (flowering stage) and 90 days (fruiting stage) after transplanting the seedlings from plants planted in MEL treated and added lime medium. In these samples, there are vegetative growth criteria (plant height, leaf area, fresh and dry weight), some biochemical properties (total phenolic, proline, malondialdehyde, chlorophyll, and anthocyanin), and some biochemical properties (total phenolic, some mineral matter contents) were studied. In general, the negative effects of lime application on vegetative growth were mitigated by applying MEL. It was determined that plant height increased with MEL application and ranged from 42.89 cm (1 Ca-5 MEL) to 25.11 cm (4 Ca-0 MEL) at the flowering stage. The leaf area increased from 467.60 cm(2)/plant (4 Ca-0 MEL) to 1098.23 cm(2)/plant (1Ca-5 MEL). The application of MEL decreased the proline and malondialdehyde (MDA) contents, while the chlorophyll and anthocyanin contents increased. Examining the applications in terms of mineral matter uptake in general, the P, K, Ca, Mg, Cu, and Mn contents in leaves increased during flowering. The P, K, Mg, Cu, and Fe contents in roots increased with the 1% Ca and MEL applications. According to the test results, applying MEL in calcareous environments positively affects plant growth by regulating plant growth, improving biochemical properties, and regulating the uptake of mineral nutrients.