The contribution of nano-zinc to alleviate salinity stress on cotton plants

Abstract

To investigate the effect of nano-zinc fertilizer on growth, yield and mineral status of cotton plants grown under salt stress, a pot experiment was set up in the greenhouse of the National Research Centre. The treatments were as follows: (I) diluted seawater: 10% (S1), 20% (S2) and tap water as a control (S0), (II) 100 ppm (NZn1), 200 ppm (NZn2) nano-zinc and distilled water as a control (NZn0). Irrigation with 10 and 20% seawater decreased dry weight (DW) of leaves by 11.53 and 43.22%, while decreases in bolls were 15.50 and 71.65%, respectively. Except for root DW and top/root ratio, the measured growth parameters were increased as nano-zinc concentration increased. As for the interaction between treatments, the highest DW of stem, leaves and bolls resulted from the addition of NZn2 under normal condition, followed by NZn2 x S1 and the next was NZn2 x S2. The foliar application of 200 ppm nano-Zn led to mitigating the adverse effect of salinity and confirmed that diluted seawater could be used in the irrigation of cotton plant. However, phosphorus fertilizer should be added with nano-Zn application to avoid P/Zn imbalance. Some elements’ status and their ratios were recorded.

Exogenous Zinc Forms Counteract NaCl-Induced Damage by Regulating the Antioxidant System, Osmotic Adjustment Substances, and Ions in Canola (Brassica napus L. cv. Pactol) Plants

“…Nano-fertilizers applications are a potential solution to these problems. Application of nano-fertilizers represents one of the most appropriate strategies for achieving increased resource use efficiency, crop production, and reduced environmental contamination (Haripriya et al 2018;Hussein and Abou-Baker 2018;Bala et al 2019). Potent, non-toxic, highly stabile, slow-release, high efficiency, biocompatible, environment-friendly, and low-cost nano-nutrients could substitute conventional fertilizers and represent a viable solution to meeting the needs of rising demand for agricultural products (Nair et al 2010;Bala et al 2019).…”

“…Smaller particle size results in an increased concentration of particles of applied zinc and also increases the specific surface area of the fertilizer for use by the plant, which increases the dissolution rate of fertilizers with low solubility in water, like Zinc oxide. Earlier studies have already documented both the positive and negative impacts on physio-biochemical processes of several plants (Hussein and Abou-Baker 2018;Bala et al 2019). However, limited work has been done to evaluate the role of ZNP in regulating physiological and biochemical processes in response to salinity.…”

Genome-wide association study reveals genetic variation and candidate genes of lint yield components under salt field conditions in cotton (Gossypium hirsutum L.)

“…Excavating elite alleles that can Cotton yield decreases under salt stress. The previous studies reported that SBW, LP and BNPP remarkably decreased under salt stress [46][47][48]. In present study, we selected four different field soil salt environments with two year replicates to investigate the lint yield components of cotton accessions.…”

Genome-wide association reveals genetic variation of lint yield components under salty field conditions in cotton (Gossypium hirsutum L.)

“…Cotton yield decreases under salt stress. Previous studies have reported that SBW, LP and BNPP are remarkably decreased under salt stress conditions [40][41][42]. In the present study, we selected four different field soil salt environments with two year replicates to investigate the lint yield components of cotton accessions.…”