Effects Of Two Different Transgenic Soybeans On Field Arthropod Diversity

Soybean is a crop with high nutritional value and economic value.As a big soybean consumer,China's total soybean output cannot meet the demand,and a large number of GM soybeans are still needed to be imported at present.While transgenic technology increases the yield of genetically modified crops,the potential risks to the ecological environment caused by the large-scale planting of genetically modified crops have gradually become the focus of attention.The study compared the field arthropod community diversity between transgenic and non-transgenic soybean during the soybean growing season from 2018 to 2019.Besides,the effects of herbicide-tolerant soybean ZUTS-33 and herbicide-tolerant soybean S4003.14 transformed with EPSPS gene on the diversity of arthropod community in the field were studied in order to provide reference data for the ecological security of herbicide-tolerant soybean.Under the isolation conditions in the field,the methods of direct observation and traps of arthropod community were used to evaluate the number and varieties of arthropod.The research compared the functional group and diversity index,dominant concentration index,evenness index,arthropod community similarity.The results are as follows:1.During the soybean growing season in 2018,the number and species of arthropods on the plant were counted by direct observation.The dominant arthropod groups of herbicide tolerant soybean ZUTS-33 and non-transgenic soybean HC-3 were basically the same in the field.The number of leafhoppers of transgenic soybean ZUTS-33 and glyphosate-sprayed transgenic soybean ZUTS-33 was significantly higher than that of receptor soybean HC-3 during the whole growth period,with significant differences(P<0.05).In addition to individual species in individual time differences,other major groups of arthropods,there is no significant difference.There was no significant difference in arthropod species richness,diversity index,evenness index and dominance concentration index between transgenic soybean ZUTS-33,transgenic soybean sprayed with glyphosate and non-transgenic soybean receptor HC-3 in the field.Spraying glyphosate transgenic soybean ZUTS-33,spraying clear water transgenic soybean ZUTS-33 and spraying clear water non-transgenic soybean HC-3 field surface arthropod species,diversity index,evenness index and dominant concentration index were basically the same,but there was no significant difference.The dynamic changes of the dominant groups of the three treatments were consistent with the survey time,but there was no significant difference.2.Changes of arthropod community diversity of transgenic soybean S4003.14 and non-transgenic receptor Jack in field under different treatments.During the soybean growing season in 2019,there was no significant difference in the population dynamics of arthropods between spraying water transgenic soybean S4003.14,glyphosate and glyphosate transgenic soybean S4003.14 and spraying clear water non-transgenic soybean Jack.Arthropod richness,diversity index,dominant concentration index and evenness index showed the same dynamic trend with time,but there was no significant difference.The similarity of arthropod community between transgenic soybean and non-transgenic soybean showed that during the whole investigation period,the arthropod community in the field plants of 5 treatments maintained high similarity and the structure of arthropod community was similar.The investigation of arthropods in the field during the whole growing period of soybean for two years showed that compared with non-transgenic soybeans in the same period,different transgenic herbicide-tolerant soybeans had no significant effect on the diversity of arthropods in the field.