Vol. 21 (1991)

Research Articles

• Dubious or disappeared phanerogamic species from Romania

  Denes PAZMANY, Eugenia CHIRCA

  55-62

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• Research on the biology of Echinacea pallida Nutt. and Echinacea purpurea (L.) Moench (II)

  Leon Sorin MUNTEAN, Alexandru SALONTAI, Constantin BOTEZ, Mircea TAMAS, Solovastru CERNEA, Gavrila MORAR, Felicia VAIDA

  63-72

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• Competition between Medicago sativa and Dactylis glomerata in mixed culture

  Ioan ROTAR, Aurelia MOLDOVAN

  73-80

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• The chlorophyllian and carotenoidical pigments content variations in the fresh and dryed leaves of Taraxacum officinale depending on some drying conditions and of the harvesting period

  Crenguta TABACARU, Carmen SOCACIU, Gavrila NEAMTU

  81-87

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• Research regarding the medium contents for "in vitro" meristem micropropagation of grape vine

  Tiberiu SUCIU, Stefania GADEA, Olimpiu HENEGARIU

  89-95

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