Does silicon attenuate PEG 6000-induced water deficit in germination and growth initial the seedlings corn

Sousa, Luciana Ingrid Souza; Brito, Ana Ecídia de Araújo; Souza, Luma Castro de; Teixeira, Keila Beatriz Silva; Nascimento, Vitor Resende do; Albuquerque, Gerson Diego Pamplona; Neto, C. F. Oliveira; Okumura, Ricardo Shigueru; Nogueira, Glauco André dos Santos; Freitas, Joze Melisa Nunes de; Monteiro, G. G. T. N.

doi:10.1590/1519-6984.265991

Cited by 3 publications

(2 citation statements)

References 26 publications

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“…However, changes in precipitation patterns, due to natural or anthropogenic effects, are triggering yield damage, particularly in arid areas [ 6 , 7 ]. Drought, as one of the most common abiotic stresses on plants in these areas, results in global yield losses of 20% for wheat [ 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

Assessing Soil Quality, Wheat Crop Yield, and Water Productivity under Condition of Deficit Irrigation

Emran,

Ibrahim,

Wali

et al. 2024

Plants

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Wheat is one of the most important cereal crops in Egypt and all over the world. Its productivity is adversely affected by drought due to deficient irrigation to provide nutrients required for plant growth. In a field experiment, silicon foliar applications at concentrations of 0, 200, and 400 mg L−1 were performed at different irrigation rates ranging from 1000 to 4000 m3 ha−1 to assess water irrigation productivity and wheat crop yield in a calcareous soil under arid climate conditions. Increased irrigation rates led to a significant increase in soil nutrient dynamics, as well as in the number and weight of grains per spike, leaf area index, grain yield, straw yield, and biological yield, with the exception of the weight of 1000 grains. Spraying with sodium silicate had a significant impact on grain yield and harvest index but did not significantly impact the other traits. Furthermore, the interaction between irrigation and silicate application rates showed significance only for grain yield, the number of spikes/m2, and the harvest index. Applying three times irrigation could produce the highest nutrient retention, wheat yield, and water irrigation productivity. No significance was observed between 3000 m3 ha−1 and 4000 m3 ha−1 irrigation, indicating a saving of 25% of applied irrigation water. It can be concluded that applying irrigation at 3000 m3 ha−1 could be a supplemental irrigation strategy. High wheat grain yield can be achieved under deficit irrigation (3000 m3 ha−1) on the northwestern coast of Egypt with an arid climate by spraying crops with sodium silicate at a rate of 400 mg L−1.

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Section: Introductionmentioning

confidence: 99%

Assessing Soil Quality, Wheat Crop Yield, and Water Productivity under Condition of Deficit Irrigation

Emran,

Ibrahim,

Wali

et al. 2024

Plants

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“…In response to stressful environments, plants are constantly making adjustments, leading to numerous morphological, physiological, and biochemical changes, such as stomatal movement, osmotic adjustment, and reactive oxygen species (ROS)-mediated antioxidant defense system [1,3,5,6]. In recent years, plants' response to water-deficit stress has become the focus of plant-environment interaction research, and various response mechanisms operating in plants have been found [7][8][9][10][11][12]. However, it is still a major challenge to effectively apply these results to field production.…”

Section: Introductionmentioning

confidence: 99%

Exogenous Salicylic Acid Alleviates Water Deficit Stress by Protecting Photosynthetic System in Maize Seedlings

Xin,

Wang,

Yang

2023

Agronomy

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Water deficit is a significant abiotic stress affecting crop growth and production. While many studies have indicated that salicylic acid (SA) plays a crucial role in mitigating the detrimental effects of environmental stress on plants, its mechanism regulating the photosynthetic adaptability of maize seedlings under water deficit is still unclear. This study aimed to investigate the impact of exogenous SA on maize seedling performance under polyethylene glycol (PEG)-induced water deficit. The results showed that PEG treatment destroyed the integrity of chloroplast and reduced chlorophyll content and photosynthesis rate (Pn), leading to growth retardation of maize seedlings with lower biomass accumulation and leaf relative water content (RWC). Moreover, chlorophyll fluorescence index, including potential photochemical activity (Fv/Fo), maximum Photosystem II (PSII) quantum yield (Fv/Fm), and energy captured by PSII reaction center for electron transfer (Eto/RC), were decreased, but energy dissipated by unit reaction center (DIo/RC) was enhanced in maize seedlings under water deficit. In addition, PEG treatment also significantly declined the activity of Rubisco and Rubisco activase (RCA) in maize seedlings. In contrast, SA treatment enhanced the content of chlorophyll, as well as the transcription level of psbA, and RCA and Rubisco small subunit (rbcS) reduced the damaging effects of PEG treatment by protecting the integrity of chloroplast and repairing the damaged PSII reaction center, thus positively regulating photosynthetic reaction and water-deficit tolerance in maize seedlings. Our data implied that SA played an important regulatory role in plant resistance to water-deficit stress, and the result will further supply the regulatory network of SA-mediated photosynthetic adaptability.

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Utilizing Infrared Thermometry to Assess the Crop Water Stress Index of Wheat Genotypes in Arid Regions under Varying Irrigation Regimes

Mohamed,

Mustafa,

Bedawy

et al. 2024

Agronomy

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Researchers are depending more than ever on remote sensing techniques to monitor and assess the agricultural water status, as well as to estimate crop water usage or crop actual evapotranspiration. In the current work, normal and stressed baselines for irrigated wheat genotypes were developed in an arid part of the Sohag governorate, Egypt, using infrared thermometry in conjunction with weather parameters. The experiment was carried out in a randomized complete block design in the normal and drought stress conditions based on three replicates using ten bread wheat genotypes (G1–G10), including five accessions, under drought stress. A standard Class-A-Pan in the experimental field provided the daily evaporation measurements (mm/day), which was multiplied by a pan factor of 0.8 and 0.4 for normal and stressed conditions, respectively. The relationship between the vapor pressure deficit (VPD) and canopy-air temperature differences (Tc − Ta) was plotted under upper (fully stressed) and lower baseline (normal) equations. Accordingly, the crop water stress indexes (CWSIs) for the stressed and normal baselines for wheat genotypes were developed. Additionally, the intercept (b) and the slope (a) of the lower baseline equation were computed for different genotypes. The results indicate that, before applying irrigation water, the CWSI values were high in both growing seasons and under all irrigation regimes. After that, the CWSI values declined. G10 underwent stress treatment, which produced the greatest CWSI (0.975). Conversely, the G6 condition that received well-watered irrigation yielded the lowest result (−0.007). When compared to a well-watered one, the CWSI values indicated a trend toward rising stress. There existed an inverse link between the CWSI and grain yield (GY); that is, a lower CWSI resulted in better plant water conditions and a higher GY. Under standard conditions, the wheat’s highest GY was recorded in G2, 8.36 Ton/ha and a WCSI of 0.481. In contrast, the CWSI result for the stress treatment was 0.883, indicating a minimum GY of 5.25 Ton/ha. The Water Use Efficiency (WUE) results demonstrated that the stress irrigation regime produced a greater WUE value than the usual one. This study makes a significant contribution by investigating the techniques that would allow CWSI to be used to estimate irrigation requirements, in addition to determining the irrigation time.

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Does silicon attenuate PEG 6000-induced water deficit in germination and growth initial the seedlings corn

Cited by 3 publications

References 26 publications

Assessing Soil Quality, Wheat Crop Yield, and Water Productivity under Condition of Deficit Irrigation

Assessing Soil Quality, Wheat Crop Yield, and Water Productivity under Condition of Deficit Irrigation

Exogenous Salicylic Acid Alleviates Water Deficit Stress by Protecting Photosynthetic System in Maize Seedlings

Utilizing Infrared Thermometry to Assess the Crop Water Stress Index of Wheat Genotypes in Arid Regions under Varying Irrigation Regimes

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