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Cereal Research Communications

, Volume 36, Issue 3, pp 461–470 | Cite as

Beneficial Exploitation of Additive Genetic Effects to Improve Yield Potential Per Plant in Maize

  • I. S. TokatlidisEmail author
  • M. Koutsika-Sotiriou
  • E. Pessios
Article

Abstract

The effect of inbreeding on yield potential per plant and the load of deleterious genes in maize (Zea mays L.) were studied. Twelve recycled hybrids obtained though inbreeding and selection on the basis line performance per se, along with their original hybrid PR 3183 and the check hybrid B73×Mo17, were tested in a R28 honeycomb trial under very low density (0.74 plants/m 2). Inbreeding depression was related with reduced yield potential per plant and increased CV of individual plant yield (estimated in F1 and F3), as well as with increased heterosis. The recycled hybrids were found to have improved yield potential per plant in both F1 and F3, lower CV values in F3, and lower inbreeding depression. Results were indicative of the effective exploitation of the additive genetic effects, which reduced the load of deleterious genes, and produced less heterozygous hybrids that were characterized by improved yield potential per plant.

Keywords

inbreeding depression CV heterosis 

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Copyright information

© Akadémiai Kiadó, Budapest 2008

Authors and Affiliations

  • I. S. Tokatlidis
    • 1
    Email author
  • M. Koutsika-Sotiriou
    • 2
  • E. Pessios
    • 3
  1. 1.Department of Agricultural DevelopmentDemocritus University of ThraceOrestiadaGreece
  2. 2.Department of Genetics and Plant BreedingAristotelian Univ. of ThessalonikiThessalonikiGreece
  3. 3.Technological Education Institute of W. Macedonia/Branch of FlorinaFlorinaGreece

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