author(s)
Haseeb Jan, Muhammad Zia-ul-Haq, Zunnu Raen Akhtar, Waleed Afzal Naveed, Shanza Ahmed, Suleiman Raza and Muhammad Latif

abstract
Aphid is destructive pest of wheat which is staple food crop of Pakistan. Eleven wheat genotypes (FSD- 08, V-11098, NIBGE gandum-3, shafaq 2006, V-13372, Punjab-2011, V-12304, 11C023, V-13005, V-13016, V-12120) were studied using the Randomized Complete Block Design during the year 2015-2016. The results revealed that shafaq 2006 and V-12120 were more susceptible with 10.22 and 9.90 aphids per tiller and minimum infestation was observed on the Punjab-2011 and 11C023 i.e 5.72 and 5.99 aphid per tiller respectively. When the peak season observations were analyzed slight changes occur in the peak population of aphid among all wheat genotypes. The most susceptible genotypes were Shafaq 2006 and V-12304 with 18.63 and 18.23 aphids per tiller while the wheat genotypes were tolerant 11C023 and Punjab 2011 with 9.99 and 10.47 aphids per tiller. Population of natural enemies varied on each genotypes and showed the negative impact on wheat aphid’s population.