Phthalates On Physiological Indicators Of The Impact Of Wheat Seedlings Research

Selecting crop-wheat which is widely grown in China as a material prepared by laboratory culturing with different concentrations of phthalate esters (PAEs) to study the soil simulated field environment on wheat seedling growth, the concentration gradient set up four and the control of soluble sugars in leaves of wheat (WSS) content, chlorophyll content, catalase (CAT) superoxide dismutase (SOD) and peroxidase (POD) activity, proline (Pro) and malondialdehyde (MDA) content, N and P and K content of phthalate esters in soil and in wheat, soil physical and chemical properties were also measured. different treatment of different concentrations and time to deal with PAEs on wheat seedlings under physiological effects of the transfer in soil and wheat in studying the pattern of accumulation. The results showed that:(1) phthalate esters under the stress of different physiological indexes showed resistance capability of different, but the concentration of phthalic acid esters for 96ug/kg, POD and CAT, Pro and MDA content or activity began to show significant resistance, resistance to environmental stress reaction. In the concentration of phthalate esters for 384ug/kg, WSS content declined slightly, the wheat seedling cells may be suffered serious damage, and affected the normal cell metabolism.(2) Six kinds of phthalate esters can be accumulated in the soil, and some from soil, transfer to wheat in wheat body, in the same cumulative processing time, with the concentration of phthalate esters, wheat seedlings in the stem of the cumulative amount is more also.(3) phthalate esters on soil physical and chemical properties to a certain extent, soil pH, the overall upward trend; soil organic matter, available P, available K generally showed a downward trend; soil nitrogen content first increased and then decreased; when the concentration of phthalate esters 192μg/kg, the soil nitrogen content reached the highest value, indicating that low concentrations of phthalates may contribute to the growth of wheat, more than this critical concentration, soil The decline in nitrogen content of wheat is not conducive to the absorption of nutrients.(4) The concentrations of phthalate esters and the time of wheat growth, wheat leaf and stem the downward trend in nitrogen content, phosphorus and potassium content increased at first and then decreased., adding that phthalates in soil not conducive to wheat seedlings to nitrogen P and K absorption, and affect the content of the wheat stems and leaves decreased, affecting the normal wheat seedling photosynthesis and resistance to external stress environment, but phthalates on wheat yield and quality and its role mechanism needs further research.