Effect of drought stress and polymer on osmotic adjustment and photosynthetic pigments of sunflower

Nazarli, H.; Faraji, Farnaz; Zardashti, Mohammad Reza

doi:10.2478/v10298-012-0022-9

Cited by 26 publications

(19 citation statements)

References 13 publications

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“…These results suggested that proline accumulation in faba bean leaves under well water and increased with increasing the drought stress in faba bean genotypes not related to faba bean types however major type was higher in all treatments. In other field crops it was found that proline content was higher after droughtin wheat (Vendruscolo et al, 2007 andJohari-Pireivatlou, 2009), Pea (Alexieva et al, 2001), Chickpea (Mafakheri et al, 2010), Sugar Beet (Putnik-Delic et al, 2013), Sesame (Kadkhodaie et al, 2015), Sunflower (Nazarli et al, 2011), upland Rice (Lumet al, 2014 and Cotton (Zhang et al, 2014). Over all water treatments proline content was in highly significant negative relationship with seed yield (r= -0.65**, P<0.01) indicated that exposing faba bean plants to drought accumulation of proline in leaves increased and seed yield decreased.…”

Section: Resultsmentioning

confidence: 99%

Effect of Waterdeficit on Seed Yield and Prolinecontent in Some Faba Bean Genotypes

El-Harty

2016

Journal of Plant Production

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Drought stress is one of the most serious problems for agriculture production and sustainability. This study was carried out to investigate seed yield and its components in addition to estimate free proline content in leaves of nine faba bean genotypes with different types grown under three water regimes (well-watered, mild and severe drought).A field experiment was laid out in split plot with three replications during two growing seasons, 2013/14 and 2014/15. The results indicated that drought had pronounce negative effects on yield and its components for all faba bean yield characters, while the effect was positive with leaves proline content. Hassawi 2 out yielded all genotypes under all water treatments and was followed by Giza 843 and ILB 1814 under well irrigation and by Giza Blanka and Giza 843 under high drought stress. Furthermore Hassawi 2 and Nubaria 1 showed higher drought tolerance efficiency (42.3 and 39.5), less drought stress susceptibility index (0.6) and minimum reduction in seed yield 58.3 and 60.4%, respectively. Proline content ranged from 46.3μg/g for Gazira 2 to 69.7 for ILB 1814 under well-watered and from 89.8 for Kamline to 264.0 for Gazira 1 under severe drought. Proline content and seed yield/plant negatively correlated (r =-0.65**) over all treatments and was insignificant under both well-watered (r= 0.62) and high drought stress (r= 0.43). This indicated that proline content was drought stress sensor and could not use as selection parameter for drought tolerant genotype.

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Section: Resultsmentioning

confidence: 99%

Effect of Waterdeficit on Seed Yield and Prolinecontent in Some Faba Bean Genotypes

El-Harty

2016

Journal of Plant Production

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“…Therefore, the level of proline accumulated in natural polymer-treated plants under water stress was not as high as in water-stressed plants without natural polymers. Similarly, by applying of natural polymers, the reduced proline accumulation was found in sunflower (Nazarli et al, 2011) and in Tomato (Ullah et al, 2016).…”

Section: Fc 100% Fc 75% Fc 50%mentioning

confidence: 90%

Applications of Natural Polysaccharide Polymers to Overcome Water Scarcity on the Yield and Quality of Tomato Fruits

Ahmed

Fahmy

2019

Journal of Soil Sciences and Agricultural Engineering

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As a result of water resource crisis, water-saving agriculture is necessary for sustainable development. Natural polysaccharide polymer is gaining great acceptance over synthetic polymers as controlled-release systems due to it is safe for the environment, cost effectiveness, easy availability, and biodegradability. This study is designed to evaluate the potential of natural polymers (cellulose, starch and cellulose/starch composite) to overcome scarcity of water on tomato (Solanum lycopersicum). Two different agricultural solid residues (rice straw and potato peels) were used to prepare of natural polymers. Polymer efficiency to water-saving and controlled release sencor herbicide was studied. Greenhouse experiment was conducted during 2017/2018. Four treatments; without polymer as a control and with different polymers (cellulose, starch and cellulose/starch composite) under three different level of irrigation (100, 75, and 50% FC) were used. Data indicated that the maximum swelling ratio of different polymer were in the fowling order, cellulose/starch (6.21 g/g) > Cellulose (4.80 g/g) > Starch (3.01 g/g). The results from the pot experiment showed that the addition of natural polymers to the soil have a positive effect to conserve water and increase the proportion of soil moisture compared to control. The highest increase was recorded at cellulose/starch polymer, this increase reached to 2.7-, 2.2-and 2.1 fold for 100, 75 and 50% FC that control. Natural polymers application with different water stress condition have positively affected on yield and quality of tomatoes especially when polymers were use under full irrigation. The increase of yield was recorded when applied different polymers (cellulose, starch and cellulose/starch) under full irrigation (100% FC), this increase reached to 13.7, 14.7 and 20.5% compared to without polymers and 2.2, 3.8 and 5.4% under irrigation scarcity (75% FC) compared to control without polymers (100% FC). Irrigation scarcity increased proline and phenol content and decrease total chlorophyll. Vitamin C, total soluble solids, pH, lycopene and juice content improved significantly with applies of natural polymers. The use of natural polymers under water scarcity improved the water use efficiency (WUE) of tomatoes.

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“…Robiul Islam et al [22] reported that 15 kg ha −1 of SAP plus 150 kg ha −1 of nitrogen was the optimum rate for sustainable corn production, which maintains proper nutrient balance in the soil, increased plant height, stem diameter, leaf area, biomass accumulation and relative water content, as well as the protein and sugar contents in the grain. It is widely accepted that SAP could be an advantage for plants against drought stress [21] mainly through improved water-use efficiency [15].…”

Section: Introductionmentioning

confidence: 99%

The effect of humic acid and water super absorbent polymer application on sesame in an ecological cropping system: a new employment of structural equation modeling in agriculture

Jahan

Mahallati

Amiri

2019

Chem. Biol. Technol. Agric.

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Background: The current knowledge does not prepare a precise scientific tool for quantifying the effects of inputs particularly ecofriendly inputs such as superabsorbent polymer (SAP) and humic acid (HA) are being used to increase soil fertility, improve crop performance and finally food production. This study was designed and conducted aimed to suggest an innovative approach not only to identify and quantify the effects of these inputs but also to determine the efficient path among underground/aboveground relationships associated with sesame oil production. Two experiments were conducted at the Research Farm of Ferdowsi University of Mashhad using randomized complete block design with split strip plot arrangement and three replications in two successive cropping years (2015-2016) to evaluate the effects of SAP and HA on Sesamum indicum L. growth characteristics and oil production under two different irrigation levels including: supplying 50 and 100% of the sesame water requirement were allocated to the main plots. Applying of SAP (80 kg ha −1) into the soil and control (no applying SAP) were allocated to the subplots. Foliar application of HA (6 kg ha −1) and control (not applying HA) were allocated to the strip plots. The analysis of variance revealed that the effects of HA and SAP on many sesame traits also soil properties were significant. Result: The fitted structural equation model suggests a direct strong-positive effect of leaf area index (LAI), plant height (PlantH) and water-use efficiency (WUE) on plant architecture construct (PlantArchitecture), soil nitrogen content (SoilN), soil electrical conductivity (SoilEC), and on soil properties construct (SoilProperties), which finally increase the sesame qualitative yield production. The calculation of the standard regression coefficients of the model's variables revealed that variables including: LAI, WUE and PlantPhysiology have had the most causal effect to defining the yield of sesame oil under the field condition of SAP and HA application. The findings in our study suggest that the direct advantages of SAP and HA application is to increase PlantPhysiology, PlantArchitecture and SoilProperties by 65, 50 and 17 percent, respectively, through contributing to the respective processes. Conclusion: Generally, the coefficient of determination of the suggested model (R 2 = 0.44) indicates that the model explains 44% of the variations in the sesame qualitative yield. The present study suggests employing the structural equation modeling could be best taken as a precise and practical quantitative modeling approach rather than a specific statistical technique, not only to quantify the effects of inputs and management operations but also helps

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Effect of drought stress and polymer on osmotic adjustment and photosynthetic pigments of sunflower

Abstract: Water stress affects plant growth and crop productivity in the vast semi-arid and arid regions of Iran. The

Cited by 26 publications

References 13 publications

Effect of Waterdeficit on Seed Yield and Prolinecontent in Some Faba Bean Genotypes

Effect of Waterdeficit on Seed Yield and Prolinecontent in Some Faba Bean Genotypes

Applications of Natural Polysaccharide Polymers to Overcome Water Scarcity on the Yield and Quality of Tomato Fruits

The effect of humic acid and water super absorbent polymer application on sesame in an ecological cropping system: a new employment of structural equation modeling in agriculture

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