Co-application of molybdenum and zinc increases grain yield and photosynthetic efficiency of wheat leaves

Abstract

The effects of the co-application of molybdenum (Mo) and zinc (Zn) on winter wheat grain yield, leaf photosynthetic efficiency, and antioxidant activity were investigated using pot culture experiments with sandy soil. Four treatments were investigated, including a control (CK), 0.15 mg Mo/kg soil (Mo), 1 mg Zn/kg soil (Zn), and 0.15 mg Mo/kg + 1 mg Zn/kg soil (Mo + Zn). The results showed that the soil application of Mo and Mo + Zn increased the winter wheat grain yield, spike number, and thousand kernel weight, coupled with significant enhancement in nitrate reductase activity, chlorophyll a and chlorophyll a + b contents, as well as the photosynthetic rate of the leaves, which were also positively correlated with grain yield. Furthermore, the co-utilization of Zn and Mo + Zn significantly increased the activities of superoxide dismutase, catalase, and peroxidase in the leaves. The overall results indicate that the co-application of Mo and Zn can increase winter wheat grain yield by improving the leaf photosynthetic efficiency and antioxidant ability.

Biofertilizer-Based Zinc Application Enhances Maize Growth, Gas Exchange Attributes, and Yield in Zinc-Deficient Soil

“…Our results are also supported by those of Liu et al [61]. They documented an increased photosynthetic efficiency by increasing chlorophyll a and b concentrations due to Zn application in Zn-deficient soil [61].…”

Optimization of Zinc Application Rates With and Without Arbuscular Mycorrhizal Fungi for the Improvement in Maize Growth, Gas Exchange Attributes and Yield in Zinc Deficient Soil

“…Our results were also supported by Liu et al [48] he reported increased in photosynthetic e ciency by increasing chlorophyll a and b contents due to Zn application in Zn de cient soil [48]. Zinzala et al [47] reported that above 80 mg Zn kg -1 soil application, all physiological parameters negatively affected due to the toxicity of Zn in plant tissues [47].…”

Influence of trace elements, applied in classical and nano forms, on photosynthesis of higher plants in relation to enhancement of crop productivity

“…Foliar treatment of French bean plants with organic and inorganic salts of iron increased the content of the sum of chlorophylls а and b and carotenoids in leaves (Borowski E and Mihalek, S 2011). A considerable increase in the content of both chlorophyll forms and carotenoids was determined in winter wheat leaves in the sand culture after the introduction of either molybdenum or zinc into soil or their combined application (Liu C et al, 2019). Higher accumulation of chlorophyll and carotenoids in wheat leaves was determined under low temperature stress and treatment with Mo, compared against the control variant (Sun X, 2006; Yu M et al, 2006).…”

“…The fi rst genotype also had the increased SOD activity (Hamurcu M et al, 2017). It was demonstrated using sandy substrate that after the introduction of zinc into soil or its combined application with molybdenum there was a considerable increase in the activity of SOD, CAT and peroxidase (KF 1.11.7) in wheat leaves (Liu C et al, 2019). Under osmotic stress, simulated by polyethyleneglycol in the hydroponics culture, the variants with the application of Mo demonstrated a considerable increase in the activity of several antioxidant enzymes (SOD, peroxidase, CAT, ascorbate peroxidase (APO, KF 1.11.1.11)) in the winter wheat cultivar with a not high content of molybdenum, but when the Mo content was high, the difference from the control was signifi cant only on some dates.…”

“…It was determined during fi eld experiments with two different types of soils (alluvial and cinnamon ones) that both the introduction of different doses of zinc into soil and its combination with foliar treatment of plants had a positive effect on photosynthesis rate in corn leaves in all the experimental variants (Liu H et al, 2016). The increase in photosynthesis rate in winter wheat leaves was determined in the sand culture after the introduction of either molybdenum or zinc into soil or their combined application (Liu C et al, 2019). A similar effect of the application of zinc on СО 2 gas exchange rate (a 1.5-fold increase, on average) was determined during a two-year fi eld experiments with ten genotypes of Indian wheat (Bharti K et al, 2014).…”