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Seedling’s Vigor of Tomato and Paprika Genotypes under a Simulated Model of Multiple Abiotic Stresses and Lower Dosage of Salicylic Acid (C7H6O3) 多重非生物胁迫和低剂量水杨酸(C7H6O3)模拟下番茄和辣椒基因型幼苗活力的研究
Pub Date : 2022-01-01 DOI: 10.4236/jacen.2022.112007
M. Massimi, L. Radócz
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引用次数: 0
Comparative Analysis of Amino Acid Composition in the Head, Muscle and Tail of Fresh African Cat Fish (Clarias gariepinus) 新鲜非洲猫鱼(Clarias gariepinus)头、肌、尾氨基酸组成的比较分析
Pub Date : 2022-01-01 DOI: 10.4236/jacen.2022.114016
A. Adepoju, O. D. Isinkaye, Bankole Emmanuel Ofeniforo, Oluwaseun Adeyiola, Eleojo Samuel Agada, Dorcas Oluwaseun Ayo-Dada
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引用次数: 0
Bio-Compost as a Soil Supplement to Improve Growth and Yield of Tomato (Lycopersicum esculentum) 生物堆肥对番茄生长和产量的促进作用
Pub Date : 2022-01-01 DOI: 10.4236/jacen.2022.112005
Hamidatu S. Darimani, Abdulai Adams, Abdul Rahaman, James Nwang, Rachad Yunus
Tomato is one of the most important fruit crops in the world which is consumed in a variety of ways. The high cost of chemical fertilizers has led to some farmers turning to alternative methods of production, such as the use of bio-fertilizers. Most organic waste may be changed into fertilizer at a low cost of production. The objectives of this study were to determine: 1) the effect of the application of bio-compost on growth, yield, and quality of tomato; 2) to determine the effects of different bio-compost applications on growth, yield and quality of tomato. The field was marked out into eight blocks. It consisted of four treatments with two replications per treatment. The bio-fertilizer was applied to plots and in-corporated into the soil. This study showed that the application of bio-fertilizers made from food waste only, cow dung only, and food waste and cow dung improved plant growth, number of leaves, plant height and fruit yield. However, the differences were not statistically significant except for the number of leaves. The study also revealed that the application of bio-fertilizer lowered the number of days to flowering, fruiting, and ripening by 50% as compared to the control group. Promoting the adoption and use of bio-compost made from different waste stream hold the promise to increasing tomato production.
番茄是世界上最重要的水果作物之一,食用方式多种多样。化肥的高成本导致一些农民转向其他生产方法,如使用生物肥料。大多数有机废物可以以较低的生产成本转化为肥料。本研究的目的是确定:1)施用生物堆肥对番茄生长、产量和品质的影响;2)确定不同生物堆肥用量对番茄生长、产量和品质的影响。这块地被划分成八个街区。它包括四个治疗,每个治疗两个重复。生物肥料施于地块,并融入土壤。本研究表明,施用食物垃圾、牛粪和食物垃圾和牛粪制成的生物肥料可以促进植物生长、叶片数量、株高和果实产量。然而,除叶片数外,差异无统计学意义。该研究还显示,与对照组相比,施用生物肥料使开花、结果和成熟的天数减少了50%。促进采用和使用由不同废物流制成的生物堆肥有望增加番茄产量。
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引用次数: 2
Adsorption Characteristics of 2,4-Dichlorophenoxybutric Acid Using Bamboo Activated Carbon in a Fixed Bed 竹材活性炭在固定床上吸附2,4-二氯苯二甲酸的特性
Pub Date : 2022-01-01 DOI: 10.4236/jacen.2022.113012
Tae Young Kim, Sung-Yong Cho
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引用次数: 0
Physical Characteristics and the Effect of Boiling and Fermentation on the Nutritional Value of Telfairia occidentalis Seeds 西葫芦种子的物理特性及煮沸发酵对其营养价值的影响
Pub Date : 2021-09-17 DOI: 10.4236/jacen.2021.104025
M. Achu, Ruth Viviane Djuikwo, Stéphane Ghomsi Tamo, C. Fotso, Michelle Carole Djouhou Fowe, E. Fokou
This work evaluates some physical parameters (the weight, length, diameter of fruits and seeds, number of seeds per fruit) and the effect of boiling and fermentation on the nutritional value of Telfairia occidentalis (fluted pumpkin) seeds. Firstly, a survey was done in the city of Yaounde on the different treatments applied to the seeds before cooking. From the results of the survey, the seeds were divided into three groups: raw, boiled and fermented. The moisture, lipid, protein, fibre, carbohydrate and ash contents were analysed using AOAC methods and minerals by atomic absorption spectrophotometry. The results showed that T. occidentalis fruit averagely weighed 6.35 kg and contained about 90 seeds. The decorticated seeds had an ovoid shape, 3.70 cm long and weighed 8.91 g. Boiling led to an increase in lipid (16.29% - 31.44%) and carbohydrate (19.20% - 21.8%) but a decrease in protein (54.06% - 34.17%) contents. Fermentation increased the crude fibre (0.70% - 1.1%) but decreased the ash content (4.07% - 3.14% DM). Boiled seeds had higher calcium, magnesium, potassium and sodium, while fermented seeds had higher zinc levels. Boiling proved better in preserving most of the seed nutrients. These seeds could be used to prevent some mineral deficiencies and their high proteins suggest their potential for the formulation of infant foods.
本工作评估了一些物理参数(果实和种子的重量、长度、直径、每果种子数)以及煮沸和发酵对西葫芦种子营养价值的影响。首先,在雅温得市对烹饪前对种子进行的不同处理进行了调查。根据调查结果,这些种子被分为三组:生的、煮熟的和发酵的。用AOAC法分析了水分、脂质、蛋白质、纤维、碳水化合物和灰分含量,用原子吸收分光光度法分析了矿物质含量。结果表明,西葫芦果实平均重6.35kg,种子约90粒。去皮的种子呈卵球形,长3.70厘米,重8.91克。煮沸导致脂质(16.29%-31.44%)和碳水化合物(19.20%-21.8%)增加,但蛋白质(54.06%-34.17%)含量下降。发酵增加了粗纤维(0.70%-1.1%),但降低了灰分(4.07%-3.14%DM)。水煮种子的钙、镁、钾和钠含量较高,而发酵种子的锌含量较高。事实证明,煮沸能更好地保存大部分种子营养成分。这些种子可用于预防某些矿物质缺乏,其高蛋白表明其在婴儿食品配方中的潜力。
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引用次数: 2
Changes in Osmotic Adjustment and Antioxidant Enzyme in Maize (Zea mays L.) Root Exposed to K Deficiency 缺钾玉米根系渗透调节和抗氧化酶的变化
Pub Date : 2021-06-24 DOI: 10.4236/jacen.2021.103023
D. Qi, Zou Tuo, Geng Leiyue, Z. Wei, Xiao-guang Wang, Haiqiu Yu, Xinhua Zhao
Potassium (K) deficiency damaged membrane stability through irregular reactive oxygen species (ROS) caused by K deficiency stress while osmotic adjustment and antioxidant capacities play an essential role in preventing plants from osmotic stress and oxidative damages. To investigate the difference of osmoprotectants and antioxidant enzyme activities in the root, two representative maize varieties, 90-21-3 (K-tolerant) and D937 (K-sensitive), were hydroponically cultivated under normal K (+K) and K deficiency (-K) treatments in Shenyang Agriculture University, China. The results showed that root accumulation, soluble protein in root of 90-21-3 and D937 were decreased under K deficiency stress, but the root to shoot ratio, proline, free amino acid, soluble sugar, reactive oxygen species (ROS) in root for both genotypes were increased. Compared with the root of D937, the root of 90-21-3 was able to swiftly accumulate more proline, free amino acid and soluble sugar in the root when encountering K deficiency. The antioxidant enzyme activity in the root of 90-21-3, including superoxide dismutase (SOD), and catalase (CAT), peroxidase (POD), were significantly increased to counter increased levels of O2·- and H2O2 under K deficiency stress. The presented results indicated that osmotic regulator and antioxidant enzyme were actively responded to K deficiency stress, 90-21-3 (K-tolerant maize) accumulated more osmoprotectants and enhanced the activity of antioxidant enzymes to degrade ROS, alleviating oxidative stress.
钾(K)缺乏通过钾缺乏胁迫引起的不规则活性氧(ROS)破坏了膜的稳定性,而渗透调节和抗氧化能力在防止渗透胁迫和氧化损伤中起着至关重要的作用。为了研究根系渗透保护剂和抗氧化酶活性的差异,在沈阳农业大学进行了两个代表性玉米品种90-21-3(耐钾)和D937(钾敏感)在正常钾(+K)和缺钾(-K)处理下的水培试验。结果表明,缺钾胁迫降低了90-21-3和D937的根系积累量、根系可溶性蛋白含量,但提高了两种基因型的根冠比、脯氨酸、游离氨基酸、可溶性糖和根系活性氧含量。与D937根系相比,90-21-3根系在缺钾条件下能够迅速积累更多的脯氨酸、游离氨基酸和可溶性糖。缺钾胁迫下,90-21-3根系中超氧化物歧化酶(SOD)、过氧化氢酶(CAT)、过氧化物酶(POD)等抗氧化酶活性显著升高,以应对O2·-和H2O2水平的升高。结果表明,渗透调节剂和抗氧化酶对缺钾胁迫有积极响应,耐钾玉米90-21-3积累了更多的渗透保护剂,增强了抗氧化酶降解ROS的活性,减轻了氧化胁迫。
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引用次数: 0
Characterization of the Allelopathic Potential of Sugarcane Leaves and Roots 甘蔗叶片和根系化感电位的表征
Pub Date : 2021-06-24 DOI: 10.4236/jacen.2021.103016
N. Hijano, M. Nepomuceno, C. Cantrell, S. Duke, P. Alves
Sugarcane cultivars that are currently planted are the result of genetic improvement focused on increased crop yield. However, this selection and genetic alteration reduced the competitive potential of sugarcane, as well as its allelopathic capabilities. Many members of the Poaceae family are highly allelopathic. Thus, the objective of this study was to characterize the allelopathic potential of two sugarcane cultivars (CTC 2 and IAC 91109) by bioassay-guided fractionation, isolation, and identification of significant phytotoxins, including those that are lipophilic. For both leaves and roots, alpha-linolenic and linoleic acid were found to be the most phytotoxic compounds found with this approach. Both compounds were phytotoxic when applied in soil and caused light-independent cellular leakage of treated cucumber cotyledon discs. We conclude that some of the phytotoxic effects of sugarcane residues in soil are due to the combined action of alpha-linolenic and linoleic acid.
目前种植的甘蔗品种是基因改良的结果,其重点是提高作物产量。然而,这种选择和遗传改变降低了甘蔗的竞争潜力,以及它的化感能力。许多禾本科植物具有高度的化感作用。因此,本研究的目的是通过生物测定指导分离、分离和鉴定重要的植物毒素,包括亲脂性毒素,来表征两个甘蔗品种(CTC 2和IAC 91109)的化感作用潜力。对于叶子和根,α -亚麻酸和亚油酸被发现是用这种方法发现的最具植物毒性的化合物。这两种化合物在土壤中施用均具有植物毒性,并引起处理过的黄瓜子叶盘不依赖光的细胞渗漏。我们认为,一些甘蔗残留物在土壤中的植物毒性作用是由于α -亚麻酸和亚油酸的共同作用。
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引用次数: 2
Effects of Calcium Nitrate Levels and Soaking Durations on Cocopeat Nutrient Content 硝酸钙水平和浸泡时间对椰肉养分含量的影响
Pub Date : 2021-06-24 DOI: 10.4236/jacen.2021.103024
Sheku N. Gbollie, S. Mwonga, A. M. Kibe
Cocopeat, a by-product of the coconut (Cocos nucifera L.), is an important soilless media that contains high potassium (K), sodium (Na), and electrical conductivity (EC) depending on its source. Methods for extracting these elements and thus lowering EC are yet to be standardized. This study was therefore carried out to investigate two extraction methods of these elements in cocopeat. A greenhouse pot experiment was carried out at the Climate and Water Smart Agriculture Centre of Egerton University, Kenya. It was laid out in a 5 × 4 factorial completely randomized design. Five soaking durations (12, 24, 36, 48, and 72 hours) and four calcium nitrate (Ca(NO3)2) levels (0, 60, 100, and 150 g) were used. The experiment was done in two folds: the leachate and treated cocopeat examination for their chemical properties. The General Linear Model procedures were used for Analysis of Variance at (P ≤ 0.05). The results showed that the addition of Ca(NO3)2 100 g extracted significantly more K and Na in the leachate than Ca(NO3)2 0.0 g and 60 g. The EC levels in the leachate increased with the application levels of Ca(NO3)2 while the pH levels were reducing. In the treated cocopeat, Ca(NO3)2 100 g and soaking duration 36 hours significantly reduced K and Na and sufficiently supplemented Ca and N. Irrespective of Ca(NO3)2 and soaking durations, after the cocopeat is washed, the EC and pH values fall within their suitable ranges. There was a strong negative correlation between Ca and Na, Ca and K, and between Na and EC. Also, strong positive correlation between Ca and N and Ca and EC. Effective supplementation of Ca and N, and optimal reduction of K and Na by 78.44% and 92%, respectively can be achieved with 100 g of Ca(NO3)2 1.5 kg-1 of cocopeat in 15 liters of water with a soaking duration of 36 hours.
椰油是椰子(Cocos nucifera L.)的副产品,是一种重要的无土培养基,它含有高钾(K)、高钠(Na)和高导电性(EC),这取决于它的来源。提取这些元素从而降低EC的方法尚未标准化。因此,本研究对椰子中这些元素的两种提取方法进行了研究。肯尼亚埃格顿大学气候与水资源智能农业中心进行了一项温室盆栽试验。试验采用5 × 4因子完全随机设计。5个浸泡时间(12、24、36、48和72小时)和4个硝酸钙(Ca(NO3)2)水平(0、60、100和150 g)。实验分为渗滤液和处理后的鸡粪两部分,对其化学性质进行了考察。方差分析采用一般线性模型程序(P≤0.05)。结果表明,添加Ca(NO3)2 100 g显著高于Ca(NO3)2 0.0 g和60 g。随着Ca(NO3)2施用量的增加,渗滤液中EC含量呈上升趋势,pH值呈下降趋势。在处理后的椰肉中,Ca(NO3)2 100 g和浸泡时间36 h显著降低了K和Na,充分补充了Ca和n。无论Ca(NO3)2和浸泡时间如何,椰肉洗涤后的EC和pH值都在适宜范围内。Ca与Na、Ca与K、Na与EC呈显著负相关。Ca与N、Ca与EC呈显著正相关。以1.5 kg-1的Ca(NO3)浓度为100 g,浸泡15升水,浸泡36小时,可获得Ca和N的有效补充,K和Na的最佳还原率分别为78.44%和92%。
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引用次数: 3
Chemical Composition Assessment by Wavelength Dispersive X-Ray Fluorescence of Agricultural Soils in the Mining Town of Moanda, Gabon 加蓬莫安达矿业镇农业土壤的波长色散x射线荧光化学成分评价
Pub Date : 2021-06-24 DOI: 10.4236/jacen.2021.103022
Albert Novy Messi Me Ndong, Adam Bouraima, C. Bissielou, J. Anguilè, T. Makani
This work focuses on the analysis of the chemical composition of soils dedicated to agriculture in order to assess the impacts of manganese mining activity in the city of Moanda in South-East Gabon. The result of the analysis obtained using wavelength dispersive X-ray fluorescence revealed the presence of twenty-seven elements in the seventeen soil samples collected namely: Na, K, Rb, Mg, Ca, Sr, Ba, Ti, Fe, Co, Ni, Cu, Zn, Y, Zr, Nb, Cr, Mn, Al, O, C, P, S, Si, I, Ac and Th. Iron (Fe), aluminum (Al) and manganese (Mn) were respectively higher. The practice of agriculture near mining sites is not without risks for the quality of agricultural products and the health of the population.
这项工作的重点是分析农业专用土壤的化学成分,以评估加蓬东南部莫安达市锰矿开采活动的影响。波长色散x射线荧光分析结果显示,17个土壤样品中存在27种元素:Na、K、Rb、Mg、Ca、Sr、Ba、Ti、Fe、Co、Ni、Cu、Zn、Y、Zr、Nb、Cr、Mn、Al、O、C、P、S、Si、I、Ac和Th。铁(Fe)、铝(Al)和锰(Mn)分别较高。在采矿地点附近从事农业活动对农产品的质量和人口的健康并非没有风险。
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引用次数: 1
Assessment of Phytosanitary Practices in Peri-Urban Agriculture and Associated Environmental and Health Impacts in Developing Countries: Case of Abengourou City (Côte d’Ivoire) 评估发展中国家城市周边农业的植物检疫做法及其对环境和健康的相关影响:以阿本古鲁市(科特迪瓦)为例
Pub Date : 2021-06-24 DOI: 10.4236/jacen.2021.103017
J. Ouattara, FranckMichael Zahui, Jean Rufin Kouassi Kouame, L. Coulibaly
The use of phytosanitary products remains uncontrolled and abusive in the practice of market gardening in most developing countries. However, it remains one of the potential sources of environmental contamination and public health problems. This study examines the health and environmental risks associated with the use of phytosanitary products in market gardening in the town of Abengourou in Cote d’Ivoire. Field surveys carried out among all (30) market gardener sites housed 150 farmers showed that when the products were spread, no health and safety measures were observed. Approximately 80% of the respondents did not wear gloves or face masks. Some products used were not approved for market gardening. Farmers had itching, dizziness, headaches, colds and vomiting on a regular basis when applying the products. The study also revealed the presence of empty packaging in the surrounding surface water and on the ground. In addition to producers, this type of uncontrolled market gardening likely exposes consumers to high health risks and also contributes to environmental degradation. Raising awareness among stakeholders of good agricultural practices could help promote sustainable market gardening. However, studies of the effects of products in such an environment on the health of consumers deserve to be carried out.
在大多数发展中国家的市场园艺实践中,植物检疫产品的使用仍然不受控制和滥用。然而,它仍然是环境污染和公共卫生问题的潜在来源之一。这项研究考察了在科特迪瓦阿本古鲁镇市场园艺中使用植物检疫产品的健康和环境风险。对150名农民居住的所有(30)个市场园丁场地进行的实地调查显示,当产品传播时,没有观察到任何健康和安全措施。大约80%的受访者没有戴手套或口罩。一些使用的产品未被批准用于市场园艺。农民在使用这些产品时经常出现瘙痒、头晕、头痛、感冒和呕吐。该研究还揭示了周围地表水和地面上存在的空包装。除了生产者之外,这种不受控制的市场园艺可能会使消费者面临高健康风险,也会导致环境退化。提高利益攸关方对良好农业做法的认识有助于促进可持续的市场园艺。然而,值得对产品在这种环境中对消费者健康的影响进行研究。
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引用次数: 1
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农业化学和环境(英文)
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