【作者】 李博；

【导师】 谢寅峰；

【作者基本信息】 南京林业大学 ， 植物学， 2009， 硕士

【摘要】 为了考察纳米材料对竹类植物生理特性的调节作用,本文分别以髯毛箬竹和黄条金刚竹为实验材料,采用叶面喷施的方法,研究不同无机纳米颗粒对这两种观赏竹种生理特性和抗酸能力的影响。实验结果如下:1.纳米氧化钛和纳米氧化硅对髯毛箬竹生理特性的影响纳米氧化钛和纳米氧化硅处理提高了髯毛箬竹PSⅡ潜在活性、实际光化学效率、电子传递速率以及光化学淬灭系数。纳米氧化钛处理没有改变光合作用日进程的变化趋势,但影响了产生“光合午休”的因素,纳米氧化硅处理一定程度上缓解了“光合午休”,两种纳米材料处理后髯毛箬竹光合作用均显著增强;纳米氧化钛和纳米氧化硅促进了叶片对N、P、K的吸收,提高了蛋白质含量和抗氧化酶活性。总体上看,150 mg/L纳米氧化钛处理和300 mg/L纳米氧化硅处理的效果较好。2.纳米氧化钛和纳米氧化锌对黄条金刚竹抗酸胁迫能力的影响纳米氧化钛和纳米氧化锌处理减轻了酸胁迫造成的表观伤害,抑制了蛋白质和叶绿素含量的下降,延缓了细胞膜透性的增大和丙二醛含量的增长;适当浓度的纳米氧化钛、纳米氧化锌处理提高了SOD和POD活性。总体来说,纳米材料增强了黄条金刚竹的抗酸胁迫能力,其中150 mg/L纳米氧化钛和150 mg/L、450 mg/L纳米氧化锌的处理效果较好。更多还原

【Abstract】 In order to study the regulatory action of nano-materials on physiological characteristics of bamboos, Indocalamus barbatus McClure and Pleioblastus kongosanensis aureostriaus Muroi et Y. Tanaka were selected as the experimental material in this paper, and through the method of foliar spray, the effect of nano-particles on physiological characteristics and antiacid ability of this two ornamental bamboo were studied. Results as followes:1.The effect of nano-TiO2 and nano-SiO2 on physiological characteristics of Indocalamus barbatus McClureThrough the treatment of nano-TiO2 and nano-SiO2, PSⅡpotential activity, actual photochemical efficiency, electron transport rate and photochemical quench of Indocalamus barbatus were improved. Treatment of nano-TiO2 didn’t change the trend of diurnal course of photosynthesis, but which effected the factors of midday depression, and nano-SiO2 relieved the midday depression to some extent, in a word, the photosynthesis of Indocalamus barbatus was score enhanced by means of treatment of two materials; As well as nano-TiO2 and nano-SiO2 promoted the absorption of nitrogen, phosphorus and potassium on leaves, inproved the protein content and antioxidant enzyme activity. Generally, the treatment can of 150 mg/L nano-TiO2 and 300 mg/L nano-SiO2 were better.2.The effect of nano-TiO2 and nano-ZnO on acid-fast ability of Pleioblastus kongosanensis aureostriaus Muroi et Y. TanakaTreatment of nano-TiO2 and nano-ZnO can alleviate the visible injury caused by acid stress, inhibit the decrease of protein content and chlorophyll content, also delay the increase of cell membrane permeability and the growth of MDA content; Suitable concentration nano-TiO2 and nano-ZnO can improve the SOD and POD activity. On the whole, Nano-Materials enhanced the acid-fast ability of Pleioblastus kongosanensis aureostriaus, which the treatment can of 150 mg/L nano-TiO2 and 150 mg/L, 450 mg/L nano-ZnO were better.更多还原