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Screening and Physiological Mechanisms of Resistance to Glyphosate in Wild Soybeans(Glycine soja)(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2013年01期
Page:
76-83
Research Field:
Publishing date:

Info

Title:
Screening and Physiological Mechanisms of Resistance to Glyphosate in Wild Soybeans(Glycine soja)
Author(s):
GAO Yue; LIU Hui; TAO Bo
College of Agriculture,Northeast Agricultural University,Harbin 150030,Heilongjiang，China
Keywords:
Wild soybean; Glyphosate; Shikimic; Chlorophyll; GSTs
PACS:
S565.1
DOI:
10.3969/j.issn.1000-9841.2013.01.018
Abstract:
Sixty-seven wild soybeans(Glycine soja )were field planted and their resistance to glyphosate were identified.The resistance to glyphoaste of tested materials varied greatly.At 1.23 kg a.i·hm-2 glyphosate,the survival rate of ZYD0685 and ZYD2405 were 87% and 83%,respectively,that of seven wild soybeans ranged from 2.7% to 38%,fifty-eight wild soybeans were died after glyphosate treatment.To elucidate the physiological mechanism of the resistance,chlorophyll content,shikimate accumulation and gultathione S transferases(GSTs)activity between glyphosate resistant and sensitive wild soybean,ZYD0685 and ZYD0790,were compared.The three index for ZYD0685 and ZYD0790 were basically identical before glyphosate treatment.Under varied glyphosate concentration treatment,chlorophyll content and shikimate accumulation remained stable and GSTs activity significantly enhanced for resistant soybean ZYD0685.While shikimate accumulation significantly increased and chlorophyll content significantly increased for sensetive soybean ZYD0790.Results suggest lower shikimate accumulation is the main physiological response for glyphosate resistance in wild soybean.

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Last Update: 2013-02-20