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根据我国不同地区和南京灯下的褐飞虱长翅型雌虫形态特征的测定,表明在前翅、后足腿节、上颚口针、第Ⅰ、Ⅱ、Ⅲ产卵瓣的长度方面存在不同程度的差异。经统计分析,证明南京地区7月25日前灯下虫峰的虫源系来于南方,7月下旬至8月上、中旬灯下的虫峰为本地双季早稻迁出世代所构成。 通过不同地区种群的杂交试验和蛋白电泳谱带比较研究,初步认为环境因素是影响褐飞虱种群形态变异的重要原因。
According to the morphological characteristics of long-winged female N. lugens from different regions and Nanjing lamp in China, it showed that there were differences in the lengths of the oviposited limbs in front wings, hind legs, maxillary spicules, Ⅰ, Ⅱ, and Ⅲ . After statistical analysis, it was proved that the insect source of the insect pest of Mount Qiang in the night of July 25 in Nanjing came from the southern part of China from late July to August. Through the comparative study of the hybridization test and the protein electrophoresis band in different regions, it is preliminarily thought that the environmental factors are the important reasons that affect the morphological variation of BPH population.