Zhou Fucai, Ren Shunxiang, Du Yuzhou, Qin Jieyang, Zhou Guisheng, Liu Zongquan
College of Agronomy, Yangzhou University, China.
Ying Yong Sheng Tai Xue Bao. 2006 Jul;17(7):1239-44.
Field investigations on the vertical and horizontal distribution patterns of Bemisia tabaci (Gennadius) population on Bt cotton Guokang No. 22 and non-Bt cotton Simian No. 3 showed that in July, no obvious difference was found in the vertical distribution of B. tabaci population on cotton plant, but in August, the population density was significantly higher on the upper part of cotton plant than on its middle and lower parts. The horizontal distribution patterns of B. tabaci adult and nymph were similar. B. tabaci distributed evenly on cotton leaves when its population density was low, but aggregated when its population density was high. The greater the population density, the higher the aggregation rate was observed. Throughout the incidence stage, B. tabaci adult and nymph aggregated and diffused alternatively. No significant difference was observed in the spatial distribution pattern of B. tabaci on Bt and non-Bt cotton plants.
对烟粉虱（Gennadius）在转Bt基因抗虫棉国抗22号和非转基因棉花泗棉3号上的垂直和水平分布格局进行的田间调查表明，7月份烟粉虱在棉花植株上的垂直分布无明显差异，但8月份棉花植株上部的种群密度显著高于中下部。烟粉虱成虫和若虫的水平分布格局相似。烟粉虱种群密度低时在棉叶上分布均匀，种群密度高时则聚集分布。种群密度越大，聚集率越高。在整个发生期，烟粉虱成虫和若虫交替聚集和扩散。烟粉虱在转Bt基因抗虫棉和非转基因棉花植株上的空间分布格局无显著差异。
