磷高效转基因水稻对潮土无机磷形态的影响

发布时间：2018-07-04 23:17

本文选题：磷高效转基因水稻 + 全磷　；参考：《农业环境科学学报》2017年08期

【摘要】：为探究磷高效转基因水稻种植对潮土不同形态无机磷的影响,采用完全随机设计的方法分析了在施磷和不施磷条件下,磷高效转基因水稻OsPT4、磷高效突变体水稻 PHO_2及非转基因亲本日本晴(Nipponbare)在分蘖期、孕穗期、灌浆期、成熟期的种植土壤中无机磷组分特征差异。结果表明:在两种施肥处理下,同一生长期Os PT4和 PHO_2的土壤全磷含量与日本晴无显著差异,同一生长期的 PHO_2土壤有效磷含量、无机磷总量、Ca8-P、Al-P含量均显著低于日本晴,OsPT4的土壤Ca8-P、Al-P含量在灌浆期和成熟期均显著低于日本晴。不施磷条件下,Os PT4土壤Ca_2-P含量在灌浆期、成熟期显著低于日本晴,在施磷和不施磷条件下,同一生长期的Os PT4土壤Ca10-P含量与日本晴无显著差异。与对照相比,磷高效转基因水稻Os PT4强化了对Ca_2-P、Ca8-P、Al-P、Fe-P这4种植物有效性高的无机磷形态的吸收利用,但未对土壤全磷含量造成显著影响。由于仅分析了第一年的种植土壤,水稻磷高效基因的表达对土壤不同无机磷形态以及全磷含量产生的效应还有待于进一步调查研究。
[Abstract]:In order to investigate the effect of transgenic rice planting with high phosphorus efficiency on different forms of inorganic phosphorus in fluvial soil, the method of complete random design was used to analyze the effects of phosphorus application and non-application of phosphorus. The characteristics of inorganic phosphorus components in cultivated soils of transgenic rice OsPT4, PHO2 and Nipponbare were different in tillering stage, booting stage, grain filling stage and maturing stage. The results showed that there was no significant difference between the total phosphorus content of Os PT4 and PHO2 in the same growing period and that of Japanese fine, but the available phosphorus content of PHO2 soil in the same growing period. The contents of total inorganic phosphorus, Ca 8-Pu Al-P in soil were significantly lower than those in Nippon OsPT4 at filling stage and mature stage. The Ca2-P content of soil Ca2-P at filling stage was significantly lower than that of Nippon fine in ripening stage, but there was no significant difference in Ca10-P content between soil Ca10-P in the same growth period and that in Nippon fine in the same growth period under the condition of no phosphorus application. Compared with the control, Os PT4 enhanced the uptake and utilization of inorganic phosphorus forms of Ca2-PnCa8-PnAl-PnFe-P plants, but had no significant effect on soil total phosphorus content. Since only the first year of planting soil was analyzed, the effects of rice phosphorus efficient gene expression on different inorganic phosphorus forms and total phosphorus content in soil need to be further investigated.
【作者单位】：农业部环境保护科研监测所农业部产地环境质量重点实验室/天津市农业环境与农产品安全重点开放实验室;东北农业大学资源与环境学院;
【基金】：国家自然科学基金项目(31301855)~~
【分类号】：S511

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