ESTIMATION COMBINING ABILITY AND SOME GENETIC PARAMETERS FOR MAIZE (Zea mays l.) AND ITS  COMPONENETS USING LINE X TESTER

SHAPAL HASAN  RAMADAN; MOHAMMED A.  HUSAIN

doi:10.26682/ajuod.2022.25.2.20

SHAPAL HASAN RAMADAN Dept. of Field Crop, College of Agricultural Engineering Sciences, University of Sulaimani, Kurdistan Region-Iraq
MOHAMMED A. HUSAIN Dept. of Field Crop, College of Agricultural Engineering Sciences, University of Sulaimani, Kurdistan Region-Iraq

DOI: https://doi.org/10.26682/ajuod.2022.25.2.20

Keywords: Combining ability, Line, Tester, Yield components

Abstract

Experiment was carried out in were sowing in 2/3/2021 at field of College of Agriculture Engineering Science, Duhok using line x tester method to compare eight inbred line, MA-F-53,SY-F-54 and H-4, used as tester (female parent).IK58,HS,Un44052 and DK-17,used as line(male parents) to study yield and yield components and to determine the nature of gene action in parents and hybrids. The results show that the mean significant variation among divers the genotype for all studied traits, also the means square due to line, tester and interaction between them exhibited significant effect for all traits except number of ear per plant. The Tester H-4 and Lines HS and Un44052 were the best general combiner for the most traits, the cross SY-F-54*DK-17 recorded the highest value (208.699) for yield per plant and gave and recoded a significant specific combining ability effect for the most studied traits. The range of narrow sense heritability ranged from 34% for number of ears per plant and 98% for grain yield per plant, also the expected genetic advance in next generation as present was moderate 14.25% for grain per plant and low value for the other traits

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