Fulvic Acid Application Improves the Maize Performance under Well‐watered and Drought Conditions     

S. A. Anjum  L. Wang  M. Farooq  L. Xue  S. Ali 《Journal of Agronomy and Crop Science》2011,197(6):409-417

Water deficit is perhaps the most severe threat to sustainable crop production in the conditions of changing climate. Researchers are striving hard to develop resistance against water deficit in crop plants to ensure food security for the coming generations. This study was conducted to establish the role of fulvic acid (FA) application in improving the performance of hybrid maize (Zea mays L.) under drought. Maize plants were grown under normal conditions till tasselling and were then subjected to drought by cessation of water followed by foliar application of FA (1.5 mg l^?1). Drought stress disrupted the photosynthetic pigments and reduced the gas exchange leading to reduction in plant growth and productivity. Nonetheless, exogenous FA application substantially ameliorated the adversities of drought by sustaining the chlorophyll contents and gas exchange possibly by enhanced levels of antioxidant enzyme (superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT)) activities and proline. These beneficial effects yielded in terms of plant growth and allometry, and grain yield. It is interesting to note that FA application also improved the crop performance under well‐watered conditions. Hence, FA may be applied to improve the crop performance under drought and well‐watered conditions.  相似文献   

Double look-ahead reference point control for autonomous agricultural vehicles     

Mehmet Bodur  Ehsan Kiani  Hasan Hacışevki 《Biosystems Engineering》2012,113(2):173-186

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High prevalence of vitamin D deficiency in school-age children in Tehran, 2008: a red alert     

Neyestani TR  Hajifaraji M  Omidvar N  Eshraghian MR  Shariatzadeh N  Kalayi A  Gharavi A  Khalaji N  Haidari H  Zowghi T  Nikooyeh B 《Public health nutrition》2012,15(2):324-330

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Conference Reports     

M. Ibrahim Ali 《国际虫害防治杂志》2013,59(3):328-333

Abstract

In an insect pests survey of soybean during 1977–1980, in the rabi and kharif seasons, 14 species were more, and 33 species less abundant, representing 19 families under seven orders. The occurrence of Aphis spp., Atractomorpha spp., Spilosoma obliqua W., Monolepta signata Olv., Nezara viridula L., Myllocerus spp., Riptortus spp., and Jassids were most notable.  相似文献   

小管出流不同亏水时期对延后栽培葡萄耗水及品质的影响   总被引：3，自引：0，他引：3  

张芮  成自勇  杨阿利  李有先  薛燕翎 《干旱地区农业研究》2013,31(2):164-168

通过设施延后栽培葡萄小管出流灌溉试验,分析了不同生育期亏水对延后栽培葡萄耗水规律、产量、可溶性固形物、总糖等指标的影响效果.结果表明,延后栽培葡萄耗水规律总体表现为“最小-增大-减小-最大-再减小”的规律;延后栽培葡萄在果实膨大期耗水模系数占到50％以上,该阶段亏水减产幅度达32.53％;葡萄总糖和可滴定酸含量对各生育期土壤水分调控响应最敏感,其中着色成熟期亏水可提高葡萄总糖含量、减小可滴定酸含量,使葡萄综合品质达到最优化;而果实膨大期亏水则导致葡萄酸涩度加重,花青苷含量降低,对品质的负面影响最大.  相似文献   

Insecticidal and biting deterrent activity of rose‐scented geranium (Pelargonium spp.) essential oils and individual compounds against Stephanitis pyrioides and Aedes aegypti     

Abbas Ali  Christine C Murphy  Betul Demirci  David E Wedge  Blair J Sampson  Ikhlas A Khan  K Husnu Can Baser  Nurhayat Tabanca 《Pest management science》2013,69(12):1385-1392

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Investigation and modeling of air permeability of Cotton/Polyester blended double layer interlock knitted fabrics     

Ali Afzal  Tanveer Hussain  Mumtaz Hassan Malik  Abher Rasheed  Sheraz Ahmad  Abdul Basit  Ahsan Nazir 《Fibers and Polymers》2014,15(7):1539-1547

The aim of this study was to analyze and model the effect of knitting parameters on the air permeability of Cotton/Polyester double layer interlock knitted fabrics. Fabric samples of areal densities ranging from 315–488 g/m² were knitted using yarns of three different cotton/polyester blends, each of two different linear densities by systematically varying knitting loop lengths for achieving different cover factors. It was found that by changing the polyester content in the inner and outer fabric layer from 52 to 65 % in the double layer knitted fabric did not have statistically significant effect on the fabric air permeability. Air permeability sharply increased with increase in knitting loop length owing to decrease in fabric areal density. Decrease in yarn linear density (tex) resulted in increase in air permeability due to decrease in areal density as well as the fabric thickness. It was concluded that response surface regression modeling could adequately model the effect of knitting parameters on the double layer knitted fabric air permeability. The model was validated by unseen data set and it was found that the actual and predicted values were in good agreement with each other with less than 10 % absolute error. Sensitivity analysis was also performed to find out the relative contribution of each input parameter on the air permeability of the double layer interlock knitted fabrics.  相似文献   

Wheat Straw Burial Improves Physiological Traits,Yield and Grain Quality of Rice by Regulating Antioxidant System and Nitrogen Assimilation Enzymes under Alternate Wetting and Drying Irrigation     

Yousef Alhaj Hamoud  Hiba Shaghaleh  Wang Ruke  Willy Franz Gouertoumbo  Amar Ali Adam hamad  Mohamed Salah Sheteiwy  Wang Zhenchang  Guo Xiangping 《水稻科学》2022,29(5):473-488

Wheat straw burial has great potential to sustain rice production under alternate wetting and drying (AWD) irrigation. A field experiment was conducted with three wheat straw burial treatments, including without straw burial (NSB), with light straw burial of 300 kg/hm² (LSB) and dense straw burial of 800 kg/hm² (DSB), as well as three AWD regimes: alternate wetting/moderate drying (AWMD), alternate wetting/severe drying (AWSD) and alternate wetting/critical drying (AWCD). The rice growth and grain quality were higher in LSB and NSB than those in NSB under the same AWD regime. The AWMD × DSB treatment resulted in the highest yield, brown rice rate, milled rice rate, amylose content and protein content. Conversely, the AWCD × NSB treatment led to the lowest yield, brown rice rate, milled rice rate, amylose content and protein content. The active absorption area and nitrate reductase activity of roots were higher in the AWMD × DSB treatment than those in the AWCD × NSB treatment, as the former increased organic carbon and nitrogen contents in the rhizosphere, whereas the latter reduced their availability. Total soluble protein content and glutamine synthetase activity were greater in the AWMD × DSB treatment than those in the AWCD × NSB treatment. The activities of superoxide dismutase and catalase were higher in the AWMD × DSB treatment compared with the AWCD × NSB treatment, leading to the amelioration of oxidative cell injury, as shown by a lower malonaldehyde level. This study suggested that farmers should implement AWMD irrigation after leaving the straw residues in the field, followed by deep tillage to improve soil quality and mitigate the drought stress cycles of AWD. This approach can improve rice growth and grain quality and alleviate the problems of disposal of straw residues and water scarcity for sustainable rice production.  相似文献   

Valproic Acid Ameliorates Locomotor Function in the Rat Model of Contusion via Alteration of Mst1, Bcl-2, and Nrf2 Gene Expression     

Ali Mardi  Alireza Biglari  Reza Nejatbakhsh  Alireza Abdanipour 《Iranian Biomedical Journal》2021,25(4):303

Background:In animal models of inflammatory diseases, Mst1 facilitates the programmed cell death as a novel pro-apoptotic kinase. This research aimed to determine the expression level of Mst1 gene in a rat model of SCI treated with VPA. Methods:Severe rat model contusion was used for evaluation of the neuroprotective effect of valproic acid. The BBB test, was performed to determine locomotor functions. H&E staining and TUNEL assay were performed to detect cavity formation and apoptosis, respectively. The mRNA levels of the genes Mst1, Nrf2, and Bcl-2 were evaluated, using quantitative RT-PCR. Results:The results revealed that Mst1 gene expression and TUNEL-positive cells in the VPA-treated group were significantly reduced as compared to the untreated group (p ≤ 0.05). Conclusion:Our findings indicate that VPA has therapeutic potential and can be a candidate for the treatment of neurodegenerative disorders and traumatic injury as a promising drug. Key Words: Bcl-2, Contusion, Mst1, Nrf2, Valproic acid  相似文献   

Far-red light: A regulator of plant morphology and photosynthetic capacity     

Tingting Tan  Shenglan Li  Yuanfang Fan  Zhonglin Wang  Muhammad Ali Raza  Iram Shafiq  Beibei Wang  Xiaoling Wu  Taiwen Yong  Xiaochun Wang  Yushan Wu  Feng Yang  Wenyu Yang 《作物学报(英文版)》2022,(2):300-309

Plant photosynthetic capacity directly determines crop yield. Light quality regulates photosynthetic capacity. This review discusses plant responses to far-red light from the phenotypic to the molecular level, focusing specifically on the improvement of photosynthetic capacity by adjustment of photosynthetic electron transport and the path of light energy. Far-red light can also regulate leaf angle and increase plant height and leaf area, via expression of associated genes, to capture more light energy.Thus, far-red light regulates plant morphology and photosynthetic capacity. Identifying the mechanism of this regulation may lead to increased crop yields.  相似文献