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Title:: Glyphosate Resistant Screening of Different Soybean Varieties and Its Resistance Mechanism

Author(s):: SHANG Lu; TAN Hong-he; HONG Hui-long; TAO Bo; GAO Shan; SUI Bing; College of Agriculture, Northeast Agricultural University, Harbin 150030, China

Keywords:: Cultivated soybean; Glyphosate resistance; Shikimic acid; Chlorophyll; SOD

PACS:: -

DOI:: 10.11861/j.issn.1000-9841.2017.01.0060

Abstract:: In this paper, the resistance of different soybean cultivars to glyphosate was studied systematically by field experiment combined with biochemtcal analysis. The results showed that under the effective glyphosate dose of 0.31-0.92 kg·ha^-1, there was a significant difference in glyphosate resistance among different soybean cultivars. When glyphosate dose was 0.92 kg·ha^-1, the survival rate of Shidou 1 was 100%, showed high resistance, the survival rate of the other 8 materials was 4%-48%, showed certain resistance, 44 materials were sensitive, and the survival rate was 0. The physiological and biochemical reaction of different resistant soybean materials were as follows, with the increase of glyphosate treatment dose and the extension of treatment time, shikimic acid chlorophyll content and SOD activity of Shidou 1 didn’t change significantly. It showed that Shidou 1 had stronger resistance to glyphosate, while the shikimic acid and SOD of the other two kinds soybean materials increased significantly. This result indicated that the accumulation of shikimic acid in soybean can be used as a judgment of one of the main physiological indexes of resistance to glyphosate.

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Glyphosate Resistant Screening of Different Soybean Varieties and Its Resistance Mechanism(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

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