缺磷胁迫下41%草甘膦异丙铵盐水剂对抗草甘膦大豆农艺性状和生理指标的影响

【目的】探明缺磷胁迫下草甘膦对抗草甘膦大豆农艺性状和生理指标的影响,为缺磷条件下抗草甘膦大豆种植时合理使用草甘膦提供理论依据。【方法】以转基因抗草甘膦大豆RR1为材料,采用溶液培养法,在RR1长出真叶时进行缺磷胁迫,第二复叶完全展开时进行4.98 m L/L的41%草甘膦异丙铵盐水剂处理,5 d后测定各生理指标,10 d后测量农艺性状。【结果】正常供磷条件下,草甘膦处理会降低RR1大豆的叶面积、总根长、主根长、地上鲜重、根鲜重、根冠比、根系活力、根系磷含量和叶片磷含量,而株高、叶片SOD活性和MDA含量增加,但与清水处理差异均不显著（P〉0.05）。缺磷胁迫下草甘膦处理的RR1大豆的叶面积、总...

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Bibliographic Details
Published in南方农业学报 Vol. 46; no. 4; pp. 564 - 568
Main Author 原向阳 张丽光 黄蕾 王斌强 冯雷 温银元 宋喜娥 王宏富 王玉国 郭平毅
Format Journal Article
LanguageChinese
Published 山西农业大学农学院作物化学调控与化学除草实验室,山西太谷,030801%山西省农业科学院作物科学研究所,太原,030031 2015
Subjects
农艺性状
抗草甘膦大豆
生理指标
缺磷胁迫
草甘膦
农艺性状
agronomic character
phosphorus deficiency stress
生理指标
glyphosate-resistant soybean
physiological index
缺磷胁迫
草甘膦
抗草甘膦大豆
glyphosate
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ISSN2095-1191
DOI10.3969/j.issn.2095-1191.2015.4.564

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Summary:【目的】探明缺磷胁迫下草甘膦对抗草甘膦大豆农艺性状和生理指标的影响,为缺磷条件下抗草甘膦大豆种植时合理使用草甘膦提供理论依据。【方法】以转基因抗草甘膦大豆RR1为材料,采用溶液培养法,在RR1长出真叶时进行缺磷胁迫,第二复叶完全展开时进行4.98 m L/L的41%草甘膦异丙铵盐水剂处理,5 d后测定各生理指标,10 d后测量农艺性状。【结果】正常供磷条件下,草甘膦处理会降低RR1大豆的叶面积、总根长、主根长、地上鲜重、根鲜重、根冠比、根系活力、根系磷含量和叶片磷含量,而株高、叶片SOD活性和MDA含量增加,但与清水处理差异均不显著（P〉0.05）。缺磷胁迫下草甘膦处理的RR1大豆的叶面积、总根长、地上鲜重、根系活力、叶片磷含量和根系磷含量降低,而株高、根鲜重、根冠比、叶片SOD活性和MDA含量增加,其中SOD活性变化达显著水平（P〈0.05）。【结论】缺磷胁迫下喷施草甘膦,大豆的根鲜重、根冠比、叶片MAD含量和SOD活性增加,叶面积、地上鲜重、根系含磷量和叶片含磷量减少。
Bibliography:45-1381/S
phosphorus deficiency stress ; glyphosate-resistant soybean ; glyphosate ; agronomic character; physiological index
[Objective]The effects of glyphosate on agronomic characters and physiological indexes of glyphosate-resistant soybean seedlings under phosphorus deficiency stress were ascertained to provide theoretical references for the rational use of glyphosate in glyphosate-resistant soybean field under phosphorus deficiency stress. [Method]The glyphosateresistant soybean RR1 was used as the research objective and the solution culture experiment under phosphorus deficiency stress at the true leaf stage was conducted. Glyphosate at 4.98 mL/L was sprayed at the two-trifoliolate leaf stage. Physiological indexes were analyzed 5 days after the glyphosate spraying, and agronomic characters were measured 10 days later. [Result]In normal phosphorus condition, glyphosate decreased the leaf areas, total root length, taproot length, shoot fresh weight, root fresh weight, ratio of root/shoot, and phosphorus c
ISSN:2095-1191
DOI:10.3969/j.issn.2095-1191.2015.4.564