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  • 1 Agricultural Research Institute of the Hungarian Academy of Sciences Brunszvik u. 2 H-2462 Martonvásár Hungary
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In order to analyse the effects of temperature (9–22 °C) and light intensity (170–576 μmol m −2 s −1 ) on plant development two barley varieties with contrasting seasonal growth habits were included in a series of experiments consisting of controlled environment tests. The effect of constant (18 °C) and daily fluctuating (18/16 °C) temperature with a long photoperiod was also examined in a set of barley varieties including winter, facultative and spring barleys. Dicktoo with facultative growth habit was more sensitive to unfavourable conditions than Kompolti korai with winter growth habit; the flowering of Dicktoo was significantly delayed by sub-and supra-optimal temperatures and low light intensity accompanied by higher or fluctuating temperatures. The optimal temperature at flowering was also significantly lower for Dicktoo than for Kompolti korai (16.0 °C vs. 21.0 °C, respectively). Plant development was the fastest when there was no fluctuating environmental factor in the growing conditions and was significantly delayed with application of photo cycle. The addition of thermo cycle to photo cycle had an even stronger delaying effect. Facultative barleys were the most sensitive, followed by winter barleys, while spring barleys the least sensitive to the introduction of thermo cycle.

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Editorial Board

      Csányi, Vilmos (Göd)
      Dudits, Dénes (Szeged)
      Falus, András (Budapest)
      Fischer, Ernő (Pécs)
      Gábriel, Róbert (Pécs)
      Gulya, Károly (Szeged)
      Gulyás, Balázs (Stockholm)
      Hajós, Ferenc (Budapest)
      Hámori, József (Budapest)
      Heszky, László (Gödöllő)
      Hideg, Éva (Szeged)
      E. Ito (Sanuki)
      Janda, Tibor (Martonvásár)
      Kavanaugh, Michael P. (Missoula)
      Kása, Péter (Szeged)
      Klein, Éva (Stockholm)
      Kovács, János (Budapest)
      Brigitte Mauch-Mani (Neuchâtel)
      Nässel, Dick R. (Stockholm)
      Nemcsók, János (Szeged)
      Péczely, Péter (Gödöllő)
      Roberts, D. F. (Newcastle-upon-Tyne)
      Sakharov, Dimitri A. (Moscow)
      Singh, Meharvan (Fort Worth)
      Sipiczky, Mátyás (Debrecen)
      Szeberényi, József (Pécs)
      Székely, György (Debrecen)
      Tari, Irma (Szeged)
      Vágvölgyi, Csaba (Szeged),
      L. Zaborszky (Newark)

 

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Acta Biologica Hungarica
Language English
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1950
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changed title
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Founder Magyar Tudományos Akadémia
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Chief Executive Officer, Akadémiai Kiadó
ISSN 0236-5383 (Print)
ISSN 1588-256X (Online)