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• Cytokinin and auxin levels in micropropagating Red Fuji and McIntosh apple varieties

  53-59

  Katalin Magyarné Tábori

  Judit Dobránszki

  Antal Ferenczy

  Erzsébet Jámborné Benczúr

  János Lazányi

  Views:

  102

  Effects of media hormone content on in vitro shoot multiplication and rooting were examined in cv. Red Fuji and McIntosh apple scions. Multiplication responses of shoots to different concentrations (0.5 and 1.0 mg/l) of 6-benzylaminopurine and 6-benzylaminopurine riboside were tested at two levels (0.1 and 0.3 mg/l) of indole-3-butyric acid. The best proliferation rate was achieved on medium containing 1.0 mg/l 6-benzylaminopurine and 0.1 mg/l indole-3-butyric acid in cv. Red Fuji (5.3) and on medium containing 1.0 mg/l 6-benzylaminopurine and 0.3 mg/l
  indole-3-butyric acid in cv McIntosh (10.3). The length of shoots on these media was enough for rooting (38.4 mm in cv. Red Fuji and 39.3 mm in cv McIntosh). Shoots developed on the best proliferation medium were used for rooting. Effects of different concentrations of auxin in the root induction media and presence of activated charcoal in the root elongation media were examined on rooting capacity. The best rooting rate (100% in cv. McIntosh and 83% in cv. Red Fuji) was achieved when the root induction medium contained 1.0 mg/l indole-3-butyric acid. In general, rooting was inhibited in the presence of activated charcoal.  Because of high in vitro multiplication and rooting rate and high percent of survival during acclimatisation, the methods described here make effective micropropagation processes possible for cv. Red Fuji and McIntosh. 

• Ethological Observations at an Outdoor Gilts Keeping System

  9-15

  Márta Alexy

  Géza Nagy

  János Gundel

  Views:

  82

  The authors examinated behaviour of twenty-eight, grouped-housed Hungarian large white x Hungarian landrasse gilts in grassland-based production system.
  The social rank was recorded on two days following, social rank was unaffected by even age or weight of gilts.
  The daily liferhythm was recorded on four different days in two weeks period. Within daily rhyhtm the following behaviours were recorded: eating, drinking, grazing, rooting, excretion and resting. On the first two observation days gilts were more active, in their daily activity two pitches were recorded.
  30% of the whole paddock was used specifically by pigs as resting and excretion area.

• The influence of biostimulators in the growth of some shrubs

  49-52

  Gheorghe-Emil Bandici

  Ileana Ardelean

  Cornelia Purcărea

  Views:

  63

  More sensitive than Mimosa pudica and more beautiful than any adornment detached from nature by man, the azalea (Azaleea
  indica) gathers through its shapes a real symphony of colours and enchanting hues, of elegant shapes, having no rival in the flower world.
  The azalea can multiply through seeds and vegetatively: seedlings, grafting, layering.
  The widest reproduction method remains that through semilignified seedlings, a method that can be used throughout the year
  avoiding the months less favourable for propagation by seedlings, with poor light: November and October. The best results are given by the
  spring propagations by seedlings (February-March) and the summer propagations by seedlings (July-August). The rooting can last for 12-14
  weeks until the seedlings can be transplanted in flower pots without risks.
  A wide application in horticultural practice is the use of growth substances, that take part in the faster formation of roots and in a
  higher percent for species of plants, that, normally, root with difficulty through seedlings. Under this aspect, many synthetical compounds
  have proved to be very active (IAA, NAA, IBA, 2,4,5-T acid etc.) (3,4).