Application of Non-Selective Herbicides in the Pre-Harvest of Wheat Damages Seed Quality  

作　　者：Glauber Moncon Fipke Thomas Newton Martin Ubirajara Russi Nunes Evandro Ademir Deak Jessica Deolinda Leivas Stecca Jose Eduardo Minussi Winck Luiz Fernando Teleken Grando Anderson da Costa Rossato 

机构地区：[1]Post-Graduation Program in Agronomy at Department of Plant Science,Federal University of Santa Maria,Santa Maria,Brazil [2]Department of Plant Science,Federal University of Santa Maria,Santa Maria,Brazil [3]Laboratory of Seed Research and Teaching,Federal University of Santa Maria,Santa Maria,Brazil [4]Field Technical Manager,Sementes Lanes Ltda.,Sao Gabriel,Brazil [5]Federal University of Santa Maria,Santa Maria,Brazil

出　　处：《American Journal of Plant Sciences》2018年第1期107-123,共17页美国植物学期刊（英文）

基　　金：the Higher-Level Personnel Improvement Coordination(Capes-Brazil)for the scholarship provided,The National Council for Scientific and Technological Development(CNPq).

摘　　要：Pre-harvest desiccation in order to minimize the time of exposure to abiotic factors after physiological maturity is a practice used in the production of quality seeds. The aim of this work was to evaluate the physical, physiological and sanitary quality of wheat seeds from plants that received non-selective herbicide application at pre-harvest. For this, the treatments were applied on pre-harvest culture. A completely randomized design was applied. We use the herbicides (glufosinate-ammonium, glyphosate and paraquat), phenological stages of herbicide application (Z-83, Z-85, Z-87, Z-92) and additional treatment (without application). The routine tests that express the physical, physiological and sanitary integrity of seeds were evaluated. For herbicide treatments, there was an 8% and 26% reduction in germination under laboratory conditions for BRS Parrudo and Sinuelo, respectively. Soil emergence was 14% higher for the control treatment, not statistically different for the Z-87 and Z-92 stages and also for the herbicides glufosinate-ammonium and glyphosate for both cultivars. The application of non-selective herbicides on wheat pre-harvest impairs the physical and physiological quality and promotes faster deterioration. Vigor is reduced under stress conditions by cold test and accelerated aging. There is no influence on seed sanity.Pre-harvest desiccation in order to minimize the time of exposure to abiotic factors after physiological maturity is a practice used in the production of quality seeds. The aim of this work was to evaluate the physical, physiological and sanitary quality of wheat seeds from plants that received non-selective herbicide application at pre-harvest. For this, the treatments were applied on pre-harvest culture. A completely randomized design was applied. We use the herbicides (glufosinate-ammonium, glyphosate and paraquat), phenological stages of herbicide application (Z-83, Z-85, Z-87, Z-92) and additional treatment (without application). The routine tests that express the physical, physiological and sanitary integrity of seeds were evaluated. For herbicide treatments, there was an 8% and 26% reduction in germination under laboratory conditions for BRS Parrudo and Sinuelo, respectively. Soil emergence was 14% higher for the control treatment, not statistically different for the Z-87 and Z-92 stages and also for the herbicides glufosinate-ammonium and glyphosate for both cultivars. The application of non-selective herbicides on wheat pre-harvest impairs the physical and physiological quality and promotes faster deterioration. Vigor is reduced under stress conditions by cold test and accelerated aging. There is no influence on seed sanity.

关 键 词：Glufosinate-Ammonium GLYPHOSATE PARAQUAT Triticum aestivum(L) 

分 类 号：R73[医药卫生—肿瘤]