Cereal Research Communications

, Volume 45, Issue 2, pp 326–335 | Cite as

Hybrid Maturity Influence on Maize Yield and Yield Component Response to Plant Population in Croatia and Nebraska

  • J. Milander
  • Ž. Jukić
  • S. MasonEmail author
  • T. Galusha
  • Z. Kmail


Maize (Zea mays L.) yield component analysis is limited. Research was conducted in 2012 and 2013 at Zagreb, Croatia and Mead, Nebraska, United States with the objective to determine the influence of environment, hybrid maturity, and plant population (PP) on maize yield and yield components. Three maturity classes of maize hybrids were produced at five PP ranging from 65,000 to 105,000 plants ha−1 under rainfed conditions. Yield, ears m−2, rows ear−1, ear circumference, kernels ear−1, kernels row−1, ear length, and kernel weight were determined. Average yield was 10.7 t ha−1, but was variable for hybrids across PP. The early maturity-hybrids had lesser ear circumference, more kernels ear−1, greater ear length, and fewer rows ear−1 than mid- and late-maturity hybrids. Kernels ear−1 had the highest correlation with yield (r = 0.47; P < 0.01 for early-maturity hybrids; r = 0.55; P < 0.01 for the mid- and late-maturity hybrids). Path analysis indicated that ears m−2, kernels ear−1 and kernel weight had similar direct effects on yield for early-maturity hybrids (R = 0.41 to 0.48) while kernels ear−1 had the largest direct effect (R = 0.58 versus 0.32 to 0.36) for the midand late-maturity hybrids. Rows ear−1 had an indirect effects on yield (R = 0.30 to 0.33) for all hybrids, while kernels row−1 had indirect effect (R = 0.46) on yield for mid- and latematurity hybrids. Yield component compensation was different for early-maturity hybrid than the mid- and late-maturity hybrids, likely due to the proportion of southern dent and northern flint germplasm present in these hybrids.


maize yield yield components path analysis 


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Hybrid Maturity Influence on Maize Yield and Yield Component Response to Plant Population in Croatia and Nebraska


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Copyright information

© Akadémiai Kiadó, Budapest 2017

Authors and Affiliations

  • J. Milander
    • 1
  • Ž. Jukić
    • 2
  • S. Mason
    • 1
    Email author
  • T. Galusha
    • 1
  • Z. Kmail
    • 3
  1. 1.Department of Agronomy & HorticultureUniversity of NebraskaLincolnUSA
  2. 2.Department of Field Crops, Forage and Grassland, Faculty of AgricultureUniversity of ZagrebZagrebCroatia
  3. 3.Department of StatisticsUniversity of NebraskaLincolnUSA

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