摘要
应用电动穿刺记录技术(EPG)对棉蚜在不同棉花品种上的取食行为进行了测定,结果记录到棉蚜的6种取食行为基本波型。棉花的多毛、红叶性状及抗、感水平对棉蚜的取食都有显著的影响。与CK非洲E40相比,多毛可以显著降低棉蚜的取食周期E2,并可显著延长第1非取食周期和增加蚜虫口针的刺探频率。棉蚜在多毛品种上的取食周期占总时间的6.0％,仅为CK品种的1/2。棉蚜在红叶棉上取食周期E2占总时间的百分率(10％)要显著低于黄叶棉品种(15％)(P<0.01)。而棉蚜在抗、感品种间的取食周期E2及取食前期波型C的周期差异也达到了极显著水平(P<0.01)。用同位素液闪技术测定了棉蚜在抗、感品种上的相对取食量,结果显示棉蚜在抗蚜品种上相对取食量也明显低于感蚜品种,并且随着取食周期的增长,抗、感品种之间比值差异更大。
The feeding behaviour of cotton aphid, Aphis gossypii Glover, on different cotton varieties was tested by EPG (Electrical Penetration Graph), six basic patterns of feeding behaviour were recorded. It was found that the density of hairiness, leaf colour and aphid resistance level of cotton significantly affected on its feeding behaviour. As compared with CK (var. African E40) , the density of hairiness reduced the feeding time E2, and increased the 1st non-feeding time and penetration frequency. The feeding time E2 of cotton aphid on test hairy varieties was 6. 0% of the total test time, only one half of that on CK, and the time percentage of its E2 on red leaf variety was 10% , obviously shorter than that on yellow leaf one (15%, P<0. 01). There were significant differences of pattern E2 and C between resistant and susceptible feeding amounts increased with feeding time.
出处
《植物保护学报》
CAS
CSCD
北大核心
1996年第1期1-7,共7页
Journal of Plant Protection
