Effect of The Ethylene Inhibitor “Agno3”, Vitamin B9 “Folic Acid” And Thiol Compound “GSH” On in Vitro Propagation of Sideritis Syriaca L. Subsp. Syriaca (Hellenic Mountain Tea of The Crete Island)

  • Virginia Sarropoulou Institute of Plant Breeding and Genetic Resources
  • Eleni Maloupa Institute of Plant Breeding and Genetic Resources
Keywords: Ethylene Inhibitors, Folic Acid, Glutathione, Greek Flora, Micropropagation, Sideritis syriaca, Silver Nitrate, Thiol Compounds, Vitamins


The aim of this research was to study the effect of the ethylene inhibitor “silver nitrate (AgNO3)” and vitamin B9 "folic acid" in different concentrations combined with cytokinin BA as well as the antioxidant thiol compound “L-glutathione reduced (GSH)” in different concentrations simultaneously with auxins (IBA+NAA) on micropropagation efficiency of the endemic Sideritis syriaca L. subsp. syriaca (Hellenic mountain tea of Crete/ Malotira) using shoot tip explants. The culture medium used was the MS supplemented with 30 g/l sucrose. The simultaneous application 5 ?M AgNO3 + 2.2 ?M BA promoted best the initial shoot induction stage exhibiting 4.5 shoots/ explant and 100% shoot multiplication (5 weeks). Folic acid applied at 0.25 mg/l in combination with 0.5 mg/l BA exhibited the highest shoot multiplication percentage (90%) (4 weeks). GSH at 10 ?M with 10.7 ?M NAA + 4.92 ?M IBA gave the greatest root length (13.68 mm), at 25 ?M caused a 3-fold increase in rooting (90%) and 250 ?M GSH raised by 20% shoot multiplication (80%). An 89% final survival rate of rooted microplants to ex vitro unheated greenhouse conditions was recorded within 8 weeks period during mid-late spring. Thus, the acclimatization and hardening process was successfully completed.

Author Biographies

Virginia Sarropoulou, Institute of Plant Breeding and Genetic Resources

Hellenic Agricultural Organization (HAO) – DEMETER, Institute of Plant Breeding and Genetic Resources, Laboratory of Protection and Evaluation of Native and Floricultural Species, Balkan Botanic Garden of Kroussia, P.C. 570 01 Thermi, Thessaloniki, P.O. Box 60458, GREECE

Eleni Maloupa, Institute of Plant Breeding and Genetic Resources

Hellenic Agricultural Organization (HAO) – DEMETER, Institute of Plant Breeding and Genetic Resources, Laboratory of Protection and Evaluation of Native and Floricultural Species, Balkan Botanic Garden of Kroussia, P.C. 570 01 Thermi, Thessaloniki, P.O. Box 60458, GREECE


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How to Cite
Sarropoulou, V., & Maloupa, E. (2019). Effect of The Ethylene Inhibitor “Agno3”, Vitamin B9 “Folic Acid” And Thiol Compound “GSH” On in Vitro Propagation of Sideritis Syriaca L. Subsp. Syriaca (Hellenic Mountain Tea of The Crete Island). JOURNAL OF ADVANCES IN BIOTECHNOLOGY, 8, 1086-1103. https://doi.org/10.24297/jbt.v8i0.8385