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转植酸酶基因玉米花粉漂移扩散频率与距离

赵宗潮,郭维维,苏营,陈法军**   

  1. (南京农业大学植物保护学院, 南京 210008)
  • 出版日期:2013-11-10 发布日期:2013-11-10

Drift frequency and distance of transgenic phyA maize pollen.

ZHAO Zong-chao, GUO Wei-wei, SU Ying, CHEN Fa-jun**   

  1. (Department of Entomology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210008, China)
  • Online:2013-11-10 Published:2013-11-10

摘要: 以转植酸酶基因玉米为试材,通过花粉染色法研究了转基因玉米花粉扩散频率和距离。结果表明:不同方位花粉扩散的风险概率不同,且随着距中央转基因玉米种植区的距离增加而降低;其中,距离转基因玉米种植区1 m处花粉扩散的风险概率最大(65.6%~82.5%),显著大于距离转基因玉米种植区3 m外的花粉扩散风险概率;距离转基因玉米种植区3 m处,转基因玉米花粉扩散的风险概率也高达21.8%,而距离转基因玉米种植区5 m以外花粉扩散的风险概率则低于8.7%;此外,不同日期由于气象条件不同,花粉漂移扩散的距离也不尽相同,其中,花粉扩散的最远距离可达35 m。

关键词: 食物网结构, 营养关系, 湿地生态系统, 稳定同位素, 食物源

Abstract: By using pollen staining technology, this paper studied the drift frequency and distance of transgenic phyA maize pollen. The risk probability of the pollen drift differed in different directions, and decreased with the increasing distance from the central planting area of transgenic phyA maize. The pollen drift risk probability was the maximum (65.6%-82.5%) at the place of 1 m distance from the central planting area of transgenic phyA maize, which was significantly greater than that (21.8%) at the place of 3 m distance from the central planting area. At the places of above 5 m distance from the central planting area, the pollen drift risk probability was less than 8.7%. Due to the different weather conditions of sampling dates, the pollen drift distance was somewhat different, and the maximum distance of pollen drift could be 35 m from the central planting area of transgenic phyA maize.

Key words: food web structure., trophic relationship, wetland ecosystem, food source, stable isotope