©FUNPEC-RP www.funpecrp.com.br Genetics and Molecular Research 12 (2): 1872-1881 (2013) Change in heritability estimates due to half-sib family selection in the maize variety Pahari M. Noor 1 , D. Shahwar 2 , H. Rahman 1 , H. Ullah 2 , F. Ali 3,4 , M. Iqbal 3 , I.A. Shah 3 and I. Ullah 5 1 Department of Plant Breeding and Genetics, University Agricultural, Peshawar, Pakistan 2 Faculty of Agriculture, Abdul Wali Khan University, Mardan, Pakistan 3 Cereal Crops Research Institute, Pirsabak, Nowshera, Khyber Pakhtunkhwa, Pakistan 4 National Key Laboratory of Crop Improvement and Genetics, Huazhong Agricultural University, Wuhan, China 5 Department of Plant Science, Kohat University of Science and Technology, Kohat, Pakistan Corresponding authors: D. Shahwar / M. Noor E-mail: smartyashmak@yahoo.com / noor_pbg49@yahoo.com Genet. Mol. Res. 12 (2): 1872-1881 (2013) Received July 4, 2012 Accepted November 9, 2012 Published January 16, 2013 DOI http://dx.doi.org/10.4238/2013.January.16.1 ABSTRACT. This research was carried out at the Agriculture Research Farm, Khyber Pakhtunkhwa Agricultural University, Peshawar, and the Cereal Crops Research Institute, Pirsabak, Nowshera, during 2009 and 2010. Half-sib families (HS) derived from the maize variety Pahari in spring crop seasons 2009 and 2010 were developed at the Cereal Crops Research Institute. All HS families were detasseled well before pollen shedding. At maturity, each family was harvested and shelled separately. During the summer crop of seasons 2009 and 2010, these HS families were evaluated in 12 x 12 and 11 x 11 partially balanced lattice square arrangements at the Khyber Pakhtunkhwa Agricultural University, Peshawar, for various fowering and yield traits, respectively. The data on days to mid-silking, anthesis, anthesis-silking interval, 100-grain weight,