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当前位置: 首页 > 文章 > 精恶唑禾草灵对粳稻和籼稻生长及保护酶系的影响研究 华北农学报 2013,28 (5) 163-168
Position: Home > Articles > Effect of Fenoxaprop-P-Ethyl on Growth and Protective Enzyme System of Japonica and Indica Rice Acta Agriculturae Boreali-Sinica 2013,28 (5) 163-168

精恶唑禾草灵对粳稻和籼稻生长及保护酶系的影响研究

作  者：
吴仁海;孙慧慧;苏旺苍;鲁传涛;王恒亮;张永超;马毅辉
单  位：
河南省农作物病虫害防治重点实验室;河南省农业科学院植物保护研究所
关键词：
精恶唑禾草灵;粳稻;籼稻;药害;保护酶系
摘  要：
以粳稻(郑稻18)和籼稻(绵优838)为试验材料,采用水培、盆栽及田间试验相结合,研究了水稻不同生育期对精恶唑禾草灵的敏感性及生理反应。在水稻萌发期,精恶唑禾草灵对粳稻和籼稻胚根生长的抑制中浓度(IC50)分别为0.168 7,0.163 7μg/mL,表明二者在芽期对精恶唑禾草灵均较为敏感。在水稻2～3叶期喷施精恶唑禾草灵后15,30 d,籼稻的IC50分别为279.56,173.49μg/mL,而试验剂量下(12.5～400μg/mL)粳稻生长抑制率低于30%,表明粳稻对精恶唑禾草灵有较高的耐药性。在粳稻4～5叶期喷施精恶唑禾草灵,结果显示,18.45 a.i g/hm2剂量对禾本科杂草防除效果较好,且对水稻生长基本没有影响,因此,田间使用精恶唑禾草灵时需要严格控制使用剂量。精恶唑禾草灵对粳稻和籼稻GSH-Px、SOD、CAT、POD等保护酶系的影响各不相同,表明2种水稻在解毒及应对精恶唑禾草灵胁迫机制上存在着差异。
译  名：
Effect of Fenoxaprop-P-Ethyl on Growth and Protective Enzyme System of Japonica and Indica Rice
作  者：
WU Ren-hai;SUN Hui-hui;SU Wang-cang;LU Chuan-tao;WANG Heng-liang;ZHANG Yong-chao;MA Yi-hui;Henan Key Laboratory of Crop Pest Control,Institute of Plant Protection,Henan Academy of Agricultural Sciences;
关键词：
Fenoxaprop-P-ethyl;;Japonica rice;;Indica rice;;Phytotoxicity;;Protective enzyme system
摘  要：
Taking Japonica(Zheng Rice 18) and Indica rice(Mianyou 838) as the test material and combining hydroponics,potted plants and field trials,this study investigated the sensitivity and physiological responses of rice to Fenoxaprop-P-ethyl at different growth stages.In rice germination,the half maximal inhibitory concentration(IC 50) of Fenoxaprop-P-ethyl against radicle growth of Japonica and Indica were 0.168 7,0.163 7 μg/mL respectively,indicating that both were more sensitive to Fenoxaprop-P-ethyl in the bud stage.For spraying fenoxaprop-Pethyl in the 2-3 leaf stage,the half maximal inhibitory concentration(IC 50) of Fenoxaprop-P-ethyl against Indica rice were 279.56,173.49 μg / mL for 15 days and 30 days after treatment respectively.In contrast,under test doses(12.5-400 μg/mL),the Japonica rice growth inhibition rate was less than 30%,indicating that the Japonica rice possesses higher resistance to Fenoxaprop-P-ethyl.In the field,both the injury effect and herbicidal activity of Fenoxaprop-P-ethyl on Japonica rice in 4-5 leaf stage at various concentrations were evaluated.The result revealed that Fenoxaprop-P-ethyl shows good preventive and controlling ability on grass weed at 18.45 a.i g / ha with no inhibitory activity on rice growth.However,the dosage must be strictly controlled for the narrow range of application doses.The Fenoxaprop-P-ethyl has different effects on the protective enzyme system in these two types of rice such as GSH-Px,SOD,CAT,POD,indicating the differences for these two types of rice in both detoxification and mechanisms of response to the stress upon treatment with Fenoxaprop-P-ethyl.

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