Effects of silicon nano-particles on yield and grain quality of wheat under water limitation
Alireza Jamali, Hamidreza Eisvand, Dariush Goodarzi, Mashala Daneshvar
Lorestan University, Dept. of Plant Production and Genetic Engineering, Iran
The experiment was performed as a factorial split-plot based on a randomised complete block design with four replications in the 2019-2020 growing season. Experiment factors were irrigation regimes [100% of field capacity (FC) as a control and 70% FC as a water limitation treatment], foliar application of silicon (SiO2) nano-particles (0, 50 and 100 mg L-1) and wheat (Triticum aestivum L.) cultivars (Heidari and Mihan). Water limitation (70% FC) decreased the plant height, number of fertile spikes, and seeds per plant compared to control (100% of FC). Silicon (SiO2) nano-particles (100 mg L-1) improved the number of seeds per plant significantly. Irrigation up to 100% FC increased the 1000-grain weight (45 g) compared to 70% FC (42 g). The highest 1000-grain weight and grain yield (4571 kg ha-1) was obtained by 100 mg L-1 of silicon nano-particles foliar application. Grain yield was increased by 100% FC (4554 kg ha-1) compared to 70% FC (4075 kg ha-1). The highest biological yield (18375 kg ha-1) was obtained in the Heydari cultivar with under 100% FC. The results also showed that increasing the concentration of silicon nano-particles increased water use efficiency in both Heidari and Mihan cultivars and increased the chlorophyll index. Deficit irrigation treatment (70% of FC) increased the grain protein percentage compared to 100% FC. The grain ash under 100% FC (1.55%) was higher than the grain ash under 70% FC (1.44%). The Heidari cultivar has a better performance than the Mihan cultivar in general, as well as under the water limitation regime.
Keywords: Grain protein, Heidari cultivar, irrigation, Mihan cultivar, nano-nutrition
Contact Address: Hamidreza Eisvand, Lorestan University, Dept. of Plant Production and Genetic Engineering, P.O. Box 465, Khorram Abad, Iran, e-mail: eisvand.hrlu.ac.ir