中文摘要：几种控制夜蛾的转BT基因玉米已在巴西实现商业化。本研究的目的是评估转BT基因和常规（非转基因）杂交玉米对夜蛾的控制效果。本研究在圣保罗州的三个地点进行，分别在5X4、5X4和8X4因素的完全随机区组设计进行。第一个因素包括不同公司商业杂交玉米的数量。第二个因子是对昆虫的不同防治措施。夜蛾造成的损伤用1-9的可视化图表（0分（无损伤）到9分（完全被破坏））和玉米产量来评价。转BT基因玉米的损伤评分主要是因为夜蛾较少，且Cry 1F, Cry 1A105 和 VIP3Aa20蛋白对减轻叶面损伤有显著作用。杀虫剂的使用证明其可有效减少由虫害造成的叶片损伤。对转BT基因玉米使用杀虫剂可减少叶面损伤，特别是表达Cry1Ab蛋白的转基因玉米能在无杀虫剂的情况下最有效地减少病虫害。
外文摘要：Several genetically modified maize events expressing insecticidal proteins from Bacillus thuringiensis (Bt) have been commercially available in Brazil, intended to control of fall armyworm, Spodoptera frugiperda (Lepidoptera: Noctuidae). The objective of this study was to evaluate the efficiency of transgenic (Bt) and conventional (non-Bt) hybrids in the control of fall armyworm, treated or not with insecticides throughout three late growing seasons. To this end, trials were conducted at three locations in the state of Sao Paulo, in a randomized complete block design, in factorial arrangements with 5x4, 5x4 and 8x4 factors, respectively. The first factor consisted of the number of commercial hybrids of different companies. The second factor was represented by the different control managements of insect (non-Bt hybrid with and without insecticide; Bt hybrid with and without insecticide). The damage caused by fall armyworm was evaluated on a visual 1-9 scale, from score 0 (no damage) to 9 (totally destroyed whorl), and grain yield (kg ha(-1)). The data were analyzed by analysis of variance and the means compared by the Tukey test at 5% probability for each parameter evaluated at each location. For the Bt hybrids, the damage scores attributed to fall armyworm were lower and the proteins Cry 1F, Cry 1A105 and VIP3Aa20 were the most efficient in reducing leaf damage. Insecticide applications proved efficient in reducing leaf damage caused by the pest. Application of insecticides to Bt hybrids generally reduced leaf damage, especially for Cry1Ab-producing hybrids, which were the least effective in reducing pest damage without insecticides.
外文关键词：Zea mays; Spodoptera frugiperda; pest management
作者：Michelotto, Marcos Doniseti; Neto, Jacob Crosariol; Pirotta, Melina Zacarelli; 等
作者单位：APTA
期刊名称：CIENCIA E AGROTECNOLOGIA
期刊影响因子：0.618
出版年份：2017
出版刊次：5