›› 1997, Vol. 40 ›› Issue (-1): 25-29.

• 研究论文 • 上一篇    下一篇

中国各棉区棉铃虫滞育解除特点

吴孔明 郭予元   

  • 出版日期:1997-12-20 发布日期:1997-12-20

THE CHARACTERISTICS OF DIAPAUSE TERMINATION OF DIFFERENT GEOGRAPHICAL POPULATIONS IN COTTON BOLLWORM, HELICOVERPA ARMIGERA (HUBNER) IN CHINA

Wu Kongming Guo Yuyuan   

  • Online:1997-12-20 Published:1997-12-20

摘要: 试验研究了我国华南棉区、长江流域棉区、黄河流域棉区、北部特早熟棉区和西北内陆棉区棉铃虫Helicoverpa armigera(Hubner)13个地理种群的滞育解除特点。随纬度升高地理种群滞育蛹在高温下的发育时间显著延长,羽化格局趋于松散,在30℃下湖南衡阳种群和新疆哈密种群的发育时间分别为(15.6±4.9)d和(41.4±9.0)d。低温处理可明显降低长江流域以北种群的滞育历期,但对华南棉区北部种群则无明显的活化作用。湖南衡阳种群、湖北武穴种群、北京种群和新疆哈密种群活化滞育蛹的发育起点温度和有效积温分别为17.4℃和146.O日度,16.6℃和146.5日度,15.7℃和156.4日度及15.7℃和167.7日度。

关键词: 棉铃虫, 滞育解除, 地理种群

Abstract: The characteristics of diapause termination for 13 populations of cotton bollworm, Helicoverpa armigera (Htibner), collected from various geographical regions in China, were investigated in the laboratory. The results showed that the developmental duration of diapausing pupae prolonged with the increase of latitude where the population was collected, for instance, that of Hengyang population (low latitude) and Hamipopulation (high latitude) were (15.6±4.9) days and (41.4±9.0) days at 30℃ respectively. The diapausing durations of the populatins from central and north China could besignificantly shortened by low temperature treatment, but it only played a slight role on the population from southern China. The developmental thresholds and effective accumulated temperatures of the vernalized diapause pupae of the populations from south,central, north and northwest China were 17.4℃ and 146.0 degree-day, 16.6℃ and 146.5 degree-day, 15.7℃ and 156.4 degree-day, and 15.7℃ and 167.7 degree-day, respectively.

Key words: cotton bollworm, diapause terminatiorl, geographical population