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41.
Hasnain Waheed Adeel Shahid Hafiz Haider Ali Javaria Nargis Azhar Mehmood 《Journal of plant nutrition》2019,42(10):1133-1141
In a field experiment, various strengths of Hoagland’s nutrient solutions were sprayed to mitigate the deleterious effects of nutrient stresses at different growth stages on mash bean cultivars. Hoagland’s nutrient solution strengths of 0, 25, 50, and 75% were applied at 7, 14, and 21?days after emergence on mash bean cultivars namely Mash-2 and Mash-88. Hoagland’s nutrient solution of 75% strength markedly increased the growth and yield of mash bean cultivars if applied at 21?days after crop emergence. The Mash-88 showed superiority in terms of growth and yield traits as compared to Mash-2. The results suggested that growth and yield was not enhanced effectively by a low strength of Hoagland’s nutrient solution applied at initial growth stages. It is concluded that foliar-applied Hoagland’s nutrient solution of 75% strength can be used as an efficient tool when applied at appropriate growth stage (21?days after emergence) to get optimal yield. 相似文献
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Hafiz Muhammad Bilal Muhammad Aamer Maqsood Muhammad Farooq 《Archives of Agronomy and Soil Science》2019,65(6):727-740
Grain phosphorus (P) and phytate contents are important for early growth and quality of wheat, respectively. We studied seed P and phytate contents of 57 wheat genotypes released during last 6 decades. The grain total P and phytate P concentrations ranged from 2.0 to 8.9 mg g?1 and 1.6 to 4.7 mg g?1, respectively. Grain P was higher in genotypes released in current or last decade than pre-green revolution period and it correlated well with grain phytate contents. Indicating that breeders worked only for increased grain P and did not consider the phytate contents. Twenty-five genotypes were selected based on differences in grain P and phytate contents to observe the P use efficiency under field conditions. Genotypes differed significantly for grain P and yield at both 0 and 60 kg ha?1 P levels. In conclusion, phytate fraction in grains of recent wheat genotypes was more as compared to old genotypes and genotype Inqlab-91 and Chakwal-86 had maximum grain total P. Moreover, number of productive tillers, spikelet per spike, grain weight, harvest index and grain P concentration and uptake were found responsible for P tolerance under P deficiency. 相似文献
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Itzel Y. Lpez-Pacheco Susana Fuentes-Tristan Laura Isabel Rodas-Zuluaga Carlos Castillo-Zacarías Itzel Pedro-Carrillo María Adriana Martínez-Prado Hafiz M. N. Iqbal Roberto Parra-Saldívar 《Marine drugs》2020,18(12)
Cyanobacteria are essential for the vast number of compounds they produce and the possible applications in the pharmaceutical, cosmetical, and food industries. As Lyngbya species’ characterization is limited in the literature, we characterize this cyanobacterium’s growth and biomass. L. purpureum was grown and analyzed under different salinities, culture media, and incubation times to determine the best conditions that favor its cell growth and the general production of proteins, carbohydrates, lipids, and some pigments as phycocyanin and chlorophyll a. In this study, each analyzed biomolecule’s highest content was proteins 431.69 mg g−1, carbohydrates 301.45 mg g−1, lipids 131.5 mg g−1, chlorophyll a 4.09 mg g−1, and phycocyanin 40.4 mg g−1. These results can provide a general context of the possible uses that can be given to biomass and give an opening to investigate possible biocompounds or bio metabolites that can be obtained from it. 相似文献
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针对船载虾塘投饵装置直接搭载传统投饵机导致破碎率高、下料过程中船体重心偏移大影响螺旋桨吃水深度等问题,设计了一种船载专用投饵装置平衡抖料系统。该系统利用电机带动偏心轮转动产生周期变化的高低差,通过多个支撑架复合式作用使饵料箱体整体平衡抖动,保障均匀下料的同时降低饵料破碎率;采用系统固定支点位置可调的整体抖动下料方式,实现较长距离无损饵料输送,解决了投喂过程船体因重心位置变化大导致尾部驱动部分吃水线变化幅度过大的问题,使得螺旋桨驱动效能更加稳定。通过抖料系统机构数学模型,获得了振动系统最优偏心量;采用力矩平衡方程进行了抖料装置支架最佳点位置分析;开展了电机能耗测试以及转动支架与料箱坡角设计。计算分析得：当偏心量为1.2mm,支点位置（-40,0）时,以额定转速2600r/min直流电机作振动源电机,实际工作功率低于80W,下料速率接近均值1.63kg/min。现场试验表明：与料箱置于尾部相比,船体驱动部分满载和空载吃水变化由10.2cm减小为7.3cm;该投饵装置正常工作速度平均1.03m/s,下料均匀,破碎率低。该系统适应于现场环境,生产和维护成本低,结构简单可靠,便于推广应用,具有较高的实用价值。 相似文献
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Effects of deep vertical rotary tillage on the grain yield and resource use efficiency of winter wheat in the Huang-Huai-Hai Plain of China 
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下载免费PDF全文 Fen WU Li-chao ZHAI Ping XU Zheng-bin ZHANG Elamin Hafiz BAILLO Lemessa Negasa TOLOSA Roy Njoroge KIMOTHO Xiu-ling JIA Hai-qian GUO 《农业科学学报》2021,20(2):593-605
Tillage represents an important practice that is used to dynamically regulate soil properties,and affects the grain production process and resource use efficiency of crops.The objectives of this 3-year field study carried out in the Huang-Huai-Hai(HHH) Plain of China were to compare the effects of a new deep vertical rotary tillage (DVRT) with the conventional shallow rotary tillage (CT) on soil properties,winter wheat (Triticum aestivum L.) grain yield and water and nitrogen use efficiency at different productivity levels,and to identify a comprehensive management that optimizes both grain yield and resource use efficiency in the HHH Plain.A split-plot design was adopted in field experiments in the winter wheat growing seasons of 2016–2017 (S1),2017–2018 (S2) and 2018–2019 (S3),with DVRT (conducted once in June 2016) and CT performed in the main plots.Subplots were treated with one of four targeted productivity level treatments (SH,the super high productivity level;HH,the high productivity and high efficiency productivity level;FP,the farmer productivity level;ISP,the inherent soil productivity level).The results showed that the soil bulk density was reduced and the soil water content at the anthesis stage was increased in all three years,which were due to the significant effects of DVRT.Compared with CT,grain yields,partial factor productivity of nitrogen (PFP_N),and water use efficiency (WUE) under DVRT were increased by 22.0,14.5 and 19.0%.Path analysis and direct correlation decomposition uncovered that grain yield variation of winter wheat was mostly contributed by the spike numbers per area under different tillage modes.General line model analysis revealed that tillage mode played a significant role on grain yield,PFP_N and WUE not only as a single factor,but also along with other factors(year and productivity level) in interaction manners.In addition,PFP_N and WUE were the highest in HH under DVRT in all three growth seasons.These results provided a theoretical basis and technical support for coordinating the high yield with high resource use efficiency of winter wheat in the resource-restricted region in the HHH Plain of China. 相似文献
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Mahmoud Alagawany Mohamed E. Abd El-Hack Muhammad Saeed Muhammad Naveed Muhammad A. Arain Muhammad Arif Ruchi Tiwari Rekha Khandia Sandip K. Khurana Kumaragurubaran Karthik Mohd. I. Yatoo Ashok Munjal Prakash Bhatt Khan Sharun Hafiz M. N. Iqbal Chao Sun Kuldeep Dhama 《Journal of animal physiology and animal nutrition》2020,104(1):245-256
Green tea (Camellia sinensis) is a popular herbal plant with abundant health benefits, and thus, it has been used as a potent antioxidant for a long time. Based on the available literature, the diversity and the availability of multifunctional compounds in green tea offer its noteworthy potential against many diseases such as liver and heart diseases, inflammatory conditions and different metabolic syndromes. Owing to its bioactive constituents including caffeine, amino acids, l -theanine, polyphenols/flavonoids and carbohydrates among other potent molecules, green tea has many pharmacological and physiological effects. The effects of green tea include anti-oxidative, anti-inflammatory, anti-arthritic, anti-stress, hypolipidaemic, hypocholesterolaemic, skin/collagen protective, hepatoprotective, anti-diabetic, anti-microbial, anti-infective, anti-parasitic, anti-cancerous, inhibition of tumorigenesis and angiogenesis, anti-mutagenic, and memory and bone health-improving activities. Apart from its utilization in humans, green tea has also played a significant role in livestock production such as in dairy, piggery, goatry and poultry industries. Supplementation of animal feeds with green tea and its products is in line with the modern concepts of organic livestock production. Hence, incorporating green tea or green tea by-products into the diet of poultry and other livestock can enhance the value of the products obtained from these animals. Herein, an effort is made to extend the knowledge on the importance and useful applications of green tea and its important constituents in animal production including poultry. This review will be a guideline for researchers and entrepreneurs who want to explore the utilization of feeds supplemented with green tea and green tea by-products for the enhancement of livestock production. 相似文献
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Walli Sammen Hafiz Ishfaq Ahmed Khan Rashid Iqbal Bashir Muhammad Ajmal Uddin Sareer Khan Shakir Ullah Ajmal Usman Hussain Sajjad Khalid Muhammad Fasih 《Gesunde Pflanzen》2022,74(2):385-396
The deficiency of micronutrients, particularly zinc (Zn) and boron (B) has affected vegetative growth, yield and fruit quality of sweet orange in many citrus growing areas of Pakistan. The present study was conducted in 2015 and 2016 to determine the impact of Zn and B supplementation on growth and quality of sweet orange cv. ‘Blood red’. Pre-harvest foliar application of variant Zn and B levels was done at different phenological stages of fruit growth and development, i.e., full bloom, fruit set and premature stage. Results have concluded that pre-harvest foliar application of Zn and B augmented phosphorous, Zn, B, potassium, iron, and manganese contents in leaves, particularly Zn and B content from deficient to optimal level. Moreover, the combined application of Zn and B has also significantly enhanced vegetative characters such as tree height and spread along with reproductive characters, i.e., incremented numbers of fruit, fruit weight, total soluble solids, titratable acidity and ascorbic acid contents. However, among stage comparison, outcomes depicted that foliar application of Zn and B at full bloom?+?fruit set?+?premature stage resulted in maximum production with high quality fruits.
相似文献48.
Muhammad Bilal Maimoona Qindeel Leonardo Vieira Nunes Marco Thúlio Saviatto Duarte Luiz Fernando Romanholo Ferreira Renato Nery Soriano Hafiz M. N. Iqbal 《Marine drugs》2021,19(1)
Rheumatoid arthritis (RA) is a chronic, systemic autoimmune disease with a prevalence rate of up to 1% and is significantly considered a common worldwide public health concern. Commercially, several traditional formulations are available to treat RA to some extent. However, these synthetic compounds exert toxicity and considerable side effects even at lower therapeutic concentrations. Considering the above-mentioned critiques, research is underway around the world in finding and exploiting potential alternatives. For instance, marine-derived biologically active compounds have gained much interest and are thus being extensively utilized to confront the confines of in practice counterparts, which have become ineffective for 21st-century medical settings. The utilization of naturally available bioactive compounds and their derivatives can minimize these synthetic compounds’ problems to treat RA. Several marine-derived compounds exhibit anti-inflammatory and antioxidant properties and can be effectively used for therapeutic purposes against RA. The results of several studies ensured that the extraction of biologically active compounds from marine sources could provide a new and safe source for drug development against RA. Finally, current challenges, gaps, and future perspectives have been included in this review. 相似文献
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Laura Isabel Rodas-Zuluaga Carlos Castillo-Zacarías Gabriela Núez-Goitia María Adriana Martínez-Prado Jos Rodríguez-Rodríguez Itzel Y. Lpez-Pacheco Juan Eduardo Sosa-Hernndez Hafiz M. N. Iqbal Roberto Parra-Saldívar 《Marine drugs》2021,19(6)
Porphyridium purpureum is a well-known Rhodophyta that recently has attracted enormous attention because of its capacity to produce many high-value metabolites such as the pigment phycoerythrin and several high-value fatty acids. Phycoerythrin is a fluorescent red protein-pigment commercially relevant with antioxidant, antimicrobial activity, and fluorescent properties. The volumetric mass transfer coefficient (kLa) was kept constant within the different scaling-up stages in the present study. This scaling-up strategy was sought to maintain phycoerythrin production and other high-value metabolites by Porphyridium purpureum, using hanging-bag photobioreactors. The kLa was monitored to ensure the appropriate mixing and CO2 diffusion in the entire culture during the scaling process (16, 80, and 400 L). Then, biomass concentration, proteins, fatty acids, carbohydrates, and phycoerythrin were determined in each step of the scaling-up process. The kLa at 16 L reached a level of 0.0052 s−1, while at 80 L, a value of 0.0024 s−1 was achieved. This work result indicated that at 400 L, 1.22 g L−1 of biomass was obtained, and total carbohydrates (117.24 mg L−1), proteins (240.63 mg L−1), and lipids (17.75% DW) were accumulated. Regarding fatty acids production, 46.03% palmitic, 8.03% linoleic, 22.67% arachidonic, and 2.55% eicosapentaenoic acid were identified, principally. The phycoerythrin production was 20.88 mg L−1 with a purity of 2.75, making it viable for food-related applications. The results of these experiments provide insight into the high-scale production of phycoerythrin via the cultivation of P. purpureum in an inexpensive and straightforward culture system. 相似文献
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