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  • Title: Change in heritability estimates due to half-sib family selection in the maize variety Pahari.
    Author: Noor M, Shahwar D, Rahman H, Ullah H, Ali F, Iqbal M, Shah IA, Ullah I.
    Journal: Genet Mol Res; 2013 Jun 13; 12(2):1872-81. PubMed ID: 23359057.
    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 flowering and yield traits, respectively. The data on days to mid-silking, anthesis, anthesis-silking interval, 100-grain weight, and grain yield were recorded. The results revealed significant differences among families for all traits in both cycles. High heritability (0.88) was observed for days to mid-silking in cycle 0 (C₀), while moderate heritability (0.42) was recorded for 100-grain weight in C₁. The selection differential was quite reasonable and varied according to the traits of interest. The observed response for grain yield in C₀ (815.74 kg/ha) was greater than the expected response (681.76 kg/ha).
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