二氧化钛纳米粒子的合成及其对菜豆形态变化、种子产量和植物毒性的影响

D. Verma, Sapan Patel, Kalyan Singh Kushwah
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引用次数: 8

摘要

纳米技术的使用可以在未来通过作物改良来解决粮食问题。纳米颗粒能促进植物形态生长和果实产量。钛被认为有利于植物的生长速度。采用沉淀法合成了二氧化钛纳米颗粒。以TiO2、NaOH和HCl为前驱体,在室温下制备纳米颗粒。通过PSA(粒度分析仪)、UV-Vis光谱、XRD (x射线衍射)等方法对其进行表征,记录了TiO2纳米颗粒在60 ~ 200纳米之间的结晶性质和SEM(扫描电子显微镜)。本研究以15、30、60、120和240 mg l TiO2纳米粒子浓度5种不同类型的菜豆(Phaseolus vulgaris)种子为材料,在培养管中培养1周(7 d),观察种子发芽率、发芽率、发芽期、根、梢生长、植株高度、叶片数量、荚果数量和种子生化变化。低浓度30和60 mg l对幼苗和成熟植株的根、梢生长速率有促进作用。高浓度240mg l对这些参数有负向影响。在低浓度处理下,处理植株的株高、叶数增加,结构、叶绿素含量和种子重量发生变化。
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Synthesis of Titanium dioxide (TiO2) nanoparticles and impact on morphological changes, seeds yield and phytotoxicity of Phaseolus vulgaris L.
The use of nanotechnology can fulfill food problems through crop improvement in future time. Nanoparticles can enhance the morphological growth and fruit yield of plants. Titanium is considered beneficial for the growth rate of plants. Titanium dioxide (TiO2) nanoparticles were synthesized by precipitation method. The nanoparticles were carried out at room temperature using TiO2, NaOH and HCl as precursors. Its characterizations were completed by PSA (Particle Size Analyzer), UV-Vis Spectroscopy, XRD (X-Ray Diffraction) recorded result was ranging from 60 to 200 nanometers and crystalline nature and SEM (Scanning Electron Microscopy) of TiO2 nanoparticles. In this research study, we treated Phaseolus vulgaris seeds with five different type 15, 30, 60, 120 and 240 mg l TiO2 nanoparticles concentrations for 1 week (7 days) in the culture tubes and examined morphological such as germination rate and time of seeds, root and shoot growth, height, number of leaves, pods and seeds and biochemical changes. Low concentrations 30 and 60 mg l boost root and shoot growth rate of seedlings and mature plants parameters. The high concentration 240 mg l affected these parameters in a negative manner. At the low concentrations increased height of plants, number of leaves and changed structure and chlorophyll content and weight of seed in treated plants.
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