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麦长管蚜Sitobion avenae(Fabricius)体色变异(红色和绿色)是一种常见的生物学现象,揭示其体色的转换机制对该类害虫的防控和测报具有潜在意义。本文利用微卫星标记技术,对麦长管蚜种群进行聚类分析和分子方差分析,从群体遗传学角度研究了不同地理种群和不同色型之间遗传多样性差异。研究结果表明,麦长管蚜的遗传分化主要以种群内的变异为主,种群间的变异占总变异的比例很小。此外,研究发现,红、绿体色间的遗传分化并不显著,且存在频繁的基因交流。这说明不同区域的不同体色麦长管蚜种群各自之间具有相似的遗传背景。
The body color variation (red and green) of Sitobion avenae (Fabricius) is a common biological phenomenon, revealing that the conversion mechanism of body color has potential significance for the prevention and control of such pests. In this paper, cluster analysis and molecular variance analysis were used for microsatellite markers in microsatellite markers. Genetic diversity of different geographical populations and different color types was studied from the perspective of population genetics. The results showed that the genetic differentiation of A. gigas was dominated by intraspecific variation, and the proportion of population variation among the total variation was small. In addition, the study found that the genetic differentiation between red and green body color is not significant, and there is frequent gene exchange. This shows that different regions of different body color wheat aphid populations have a similar genetic background between.