西南林业大学学报2025，Vol.45Issue(3)：35-41,7.DOI:10.11929/j.swfu.202403060
桉树草甘膦耐性浓度的筛选及其生理代谢的影响
Screening of Glyphosate Tolerance Concentration in Eucalyptus and Its Effects on Physiological Metabolism
摘要
Abstract
In this study,Eucalyptus urophylla × grandis clone DH3229 was selected as materials and their growth characters and physiology activity including catalase(CAT),superoxide dismutase(SOD),peroxidase(POD)activities and the contentsof malondialdehyde(MDA),proline and chlorophyll were detected under different concentrations of glyphosate spraying.The results showed that spraying glyphosate to plants with 200 times diluted glyphosate(2.4 g/L)could cause severe damages and event to die.The activities of CAT,POD and SOD significantly increased with increasing glyphosate concentration and then decreased.Meanwhile,the activities of CAT and POD reached the highest level under 0.8 g/L glyphosate while SOD activity reached the highest level under 1.2 g/L glyphosate.However,the contents of MDA and proline continuously increased with increasing glyphosate concentration,suggesting that glyphosate could severely damage the growth of Eucalyptus plant.To further clarify the effect of Eucalyptus growth of glyphosate,their growth and physiology activity of dif-ferent durations were also determined under 2.4 g/L glyphosate spraying.The whole plant die after 16 days treat-ment.The enzyme activities of CAT,SOD and POD increased slowly with the increasing duration and then sharply declined,in which CAT and SOD activities reached the highest after 8 days treatment and POD activity reached the highest after 6 days treatment.Chlorophyll content also decreased with the extension of duration.关键词
除草剂/尾巨桉/过氧化氢酶/过氧化物酶/丙二醛Key words
herbicide/Eucalyptus urophylla × E.grandis/catalase/peroxidase/malondialdehyde分类
农业科技引用本文复制引用
王学君,庞贞武,张双,吴兵,刘关君,范春节..桉树草甘膦耐性浓度的筛选及其生理代谢的影响[J].西南林业大学学报,2025,45(3):35-41,7.基金项目
"十四五"重点研发计划项目(2021YFD2200102-05)资助 （2021YFD2200102-05）
中国林业科学研究院基本科研业务费专项资金项目(CAFYBB2020ZB004)资助. （CAFYBB2020ZB004）
