Screening for Glyphosate Resistant Wild Soybean(Glycine soja) and Study on Its Physiological Mechanisms of Resistance  

抗草甘膦野生大豆筛选及其抗性生理机制研究(英文)

作　　者：高越[1,2] 刘辉[1] 陶波[1] 

机构地区：[1]东北农业大学农学院,黑龙江哈尔滨150030 [2]齐齐哈尔市园艺研究所,黑龙江齐齐哈尔161000

出　　处：《Agricultural Science & Technology》2013年第9期1263-1266,共4页农业科学与技术（英文版）

基　　金：Supported by the National Natural Science Foundation of China(30971834)~~

摘　　要：[Objective] This study aimed to preliminarily determine the physiological mechanism of glyphosate resistance produced in wild soybean（Glycine soja） and further provide a basis for the breeding of glyphosate-resistant soybean. [Method] First,a screening for glyphosate resistant varieties among sixty-seven wild soybean materials was done in a field trial; subsequently, physiological indexes of the screened resistant variety ZYD0685 and the sensitive variety ZYD0790 were studied. [Result]At the glyphosate dose of 1.23 kg a.i/hm2, glyphoaste resistance varied greatly among different wild soybean materials, with the highest survival rate of 87% and83% occurring in ZYD0685 and ZYD2405, respectively, and that of another seven accessions ranged from 2.7% to 38%, and all the remaining fifty-eight soybean materials died. After treatment with glyphoaste at different doses, there were no significant differences in chlorophyll content and shikimate content in the resistant ZYD0685, but there was an evident increase in the activity of gultathione-S-transferases（GSTs）; while in the sensitive ZYD0790, the content of shikimic acid increased significantly, and chlorophyll content decreased significantly, and GSTs activity revealed a slight change. [Conclusion] Therefore, lowering the amount of accumulated shikimic acid is the major physiological response to glyphosate in wild soybean.[目的]初步确定抗草甘膦野生大豆抗性产生的生理机制,为抗草甘膦大豆育种奠定基础。[方法]利用田间试验对67份野生大豆材料进行草甘膦抗性筛选;并以抗性材料ZYD0685和敏感材料ZYD0790进行生理指标研究。[结果]在草甘膦有效剂量为1.23 kg/hm2条件下,不同野生大豆对草甘膦抗性存在明显差异,其中ZYD0685和ZYD2405的存活率最高,分别为87%和83%;7份材料的存活率为2.7%~38%;58份材料死亡。在草甘膦不同剂量处理下,抗性材料ZYD0685叶绿素和莽草酸含量没有明显变化,GSTs活性明显增加;而敏感材料ZYD0790莽草酸含量明显升高,叶绿素含量明显降低,GSTs活性变化幅度较小。[结论]降低莽草酸积累量较少是野生大豆抗草甘膦的主要生理反应。

关 键 词：Wild soybean GLYPHOSATE Shikimic acid Chlorophyll content Gultathione-S-transferases（GSTs） 

分 类 号：S565.1[农业科学—作物学]