转基因高蛋氨酸大豆对根际土壤主要有机元素和酶活性的影响

【目的】为了评估转基因高蛋氨酸大豆ZD91对土壤生态系统的安全性,开展了其对土壤主要有机元素和酶活性影响的实验。【方法】连续2年,在大豆苗期、花期、鼓粒期和成熟期,采用抖落法采集根际土壤样品,通过室内测定,分析了转基因大豆ZD91对根际土壤含水量、pH、主要有机元素和酶活性的影响。【结果】转基因大豆ZD91较之对应的非转基因大豆对根际土壤含水量、pH、主要有机元素和酶活性无显著影响,但同一种酶活在不同年份和不同生育期存在显著差异。【结论】转基因大豆ZD91对土壤生态系统具有安全性。

Effect of a high-methionine transgenic soybean (Glycine max) on soil organic elements and enzyme activities in the rhizosphere

[Aim] In order to evaluate the safety of transgenic high-methionine soybean ZD91 to the soil component of ecosystems, we studied the impact of transgenic soybean ZD91 on the main organic elements and enzyme activities in the soil.[Method] Rhizosphere soil samples were collected at four different growth stages (seedling, flowering, pod-setting, and maturity) in two consecutive growing seasons, and the effect on soil moisture, pH, a mounts of total C and total N, and invertase and alkaline phosphatase activities were measured under the laboratory conditions.[Result] The results showed that growing transgenic soybean ZD91 had no significant effects on soil moisture, pH, the concentrations of main soil organic elements and enzyme activities in rhizosphere compared to similar parameters in soil under non-transgenic soybean. Invertase and alkaline phosphatase activities showed significant differences in different years and different growth stages.[Conclusion] Transgenic soybean ZD91 is safety for soil ecosystem.