转GAFP基因棉花生态适合度及其对棉田昆虫群落的影响

doi:10.13287/j.1001-9332.201611.005

摘要/Abstract

摘要： 新型转基因棉花生态适合度及其对棉田昆虫群落的影响是转基因棉花环境安全评价的重点内容.本文选用新型转GAFP(Gastrodia anti-fungal protein)基因棉花及其非转基因亲本棉花为试验材料,于2013和2014年在河南安阳研究了田间棉花生态适合度及其对昆虫群落的影响.结果表明: 转基因棉蕾期、花铃期和铃期叶片干物质量与其亲本无显著差异;苗期比叶面积显著低于亲本,蕾期、花铃期和铃期叶面积显著大于亲本;苗期株高显著低于亲本,蕾期、花铃期和铃期株高与亲本无显著差异;棉花生长的4个关键时期(苗期、蕾期、花铃期和铃期),转基因棉单株果枝数、蕾数和脱落数均与亲本无显著差异,而铃期单株大铃数显著低于亲本.棉铃虫发生的3个高峰期,转基因棉对棉铃虫和甜菜夜蛾无明显控制作用,且对棉田昆虫群落、害虫亚群落和天敌亚群落的昆虫个体总数、昆虫群落结构与组成、均匀性指数、多样性指数和优势集中性指数均无显著影响.表明外源基因GAFP导入后,新型转基因棉花营养生长增强,产量构成性状整体无显著变化,未引起棉田昆虫群落变化.研究初步明确了新型转基因棉花生存竞争势态和棉田昆虫群落发生规律与动态,可为新型转基因棉花环境安全评价提供理论依据,同时为转基因棉花环境安全评价积累科学数据.

Abstract: The ecological fitness of transgenic cotton and its effects on the insect communities in cotton fields is one of the key aspects of the evaluation of the environmental safety of transgenic cotton. New transgenic GAFP (Gastrodia anti-fungal protein) cotton and its parental varieties were used in this study to explore their ecological fitness and their effects on insect community infield in Anyang, Henan Province in 2013 and 2014. The results showed that there was no significant difference in dry mass for transgenic cotton leaves compared to that of parental cotton. Specific leaf areas of transgenic cotton were lowered obviously at seedling stage, while enhanced significantly at budding, flowering and bolling stages relative to parental cotton. The plant height of transgenic cotton was lowered only at seedling stage, and no significant difference was showed between the two cultivars at budding, flowering and bolling stages. No significant differences were discovered on plant branch numbers, bud numbers and falling numbers between the transgenic cotton and control material in any of the four key stages during the cotton growth. However, the number of bolls per plant for transgenic cotton was lower than that of the control cotton at the bolling stage. In the 2nd, 3rd, and 4th generation of cotton bollworm (Helicoverpa armigera), the mortality rate of cotton bollworm and beet armyworm (Spodoptera exigua) of transgenic cotton had no significant difference with parental cotton. Compared to parental cotton, total individuals of insect community, pest sub-communities and enemy sub-communities in transgenic cotton field didn’t show any significant difference. The above results showed that after the GAFP gene was imported into cotton, the cotton growth was enhanced significantly, while the whole yield component traits and the insect community in the field were not significantly changed. Our study on the competition of new transgenic cotton and survival of transgenic cotton insect communities in cotton field would provide the theoretical basis for the evaluation of new transgenic cotton and environmental safety, and accumulate scientific data for environmental safety evaluation of the transgenic cotton.

雒珺瑜, 张帅, 朱香镇, 吕丽敏, 王春义, 李春花, 张利娟, 王丽, 崔金杰. 转GAFP基因棉花生态适合度及其对棉田昆虫群落的影响[J]. 应用生态学报, 2016, 27(11): 3675-3681.

LUO Jun-yu, ZHANG Shuai, ZHU Xiang-zhen, LU Li-min, WANG Chun-yi, LI Chun-hua, ZHANG Li-juan, WANG Li, CUI Jin-jie. Ecological fitness of transgenic GAFP cotton and its effects on the field insect community.[J]. Chinese Journal of Applied Ecology, 2016, 27(11): 3675-3681.

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