Screening of potato germplasm against aphid and whitefly in gangetic plains of West Bengal

Nine germplasm lines viz., Kufri Chandramukhi, Kufri Jawhar, Kufri Ashoka, Kufri Pukhraj, Atlantic, Kufri Bahar, J/97–165, J/97–168 and J/95–144 were more susceptible to the whitefly while four lines, Kufri Chipsona-1, Kufri Chipsona-2, DSP-7 and MS/99–1871 were comparatively less susceptible. J/96–84 and J/96–149 showed moderate level of suspectibility.