[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...[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.展开更多
基金Supported by Hunan Provincial Postgraduate Scientific Research Innovation Project(CX20231270).
文摘[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.
