Study on Alleviating the Toxic Effect of Pretilachlor on Rice Seedlings by the Extract of Phellodendri Chinensis Cortex  

作　　者：Ang CHENG Fan XIE Chenzhong JIN 

机构地区：[1]Collaborative Innovation Center for Farmland Weed Control Technology and Application,Hunan University of Humanities,Science and Technology,Loudi 417000,China [2]Loudi Institute of Agricultural Sciences,Loudi 417000,China

出　　处：《Agricultural Biotechnology》2025年第1期1-4,8,共5页农业生物技术(英文版)

基　　金：Supported by Hunan Provincial Postgraduate Scientific Research Innovation Project(CX20231270).

摘　　要：[Objectives]This study was conducted to investigate the alleviating effect of Phellodendri Chinensis Cortex extract on the phytotoxicity of pretilachlor in rice.[Methods]In addition to CK,Phellodendri Chinensis Cortex extract and pretilachlor with different gradients were added to the culture medium,and rice seeds with the same bud length were evenly placed in the culture medium.After 10 and 15 d of culture,the plant height and fresh weight of rice seedlings were measured and the alleviation rate was calculated.[Results]Ten days after application,the plant height of treatment 8(pretilachlor:extract concentration ratio of 25:200)was alleviated with an alleviation rate of 21.72%,and the fresh weight of treatment 9(pretilachlor:extract concentration ratio of 25:400)was alleviated with an alleviation rate of 31.04%.Fifteen days after treatment,the plant height of treatment 6(pretilachlor:extract concentration ratio of 25:50)showed a better alleviating effect,and the fresh weight of treatment 8(pretilachlor:extract concentration ratio of 25:200)exhibited a better alleviating effect,with an alleviation rate of 22.39%.Meanwhile,it was found that the extract of Phellodendri Chinensis Cortex could alleviate the increase of POD activity in rice leaves caused by pretilachlor.Meanwhile,it was found that the extract of Phellodendri Chinensis Cortex promoted the expression of CAT in rice seedlings,thus significantly increasing its activity and alleviating the toxicity of pretilachlor to rice.[Conclusions]This study can provide technical support for the screening and field application of plant-derived safeners.

关 键 词：Extract of Phellodendri Chinensis Cortex Pretilachlor RICE PHYTOTOXICITY 

分 类 号：S45[农业科学—植物保护]