Published in Scientific Papers. Series B, Horticulture, Vol. LXVII, Issue 2
Written by Tina Oana CRISTEA, Gabriel-Alin IOSOB, Alexandru BUTE
Salicylic acid is a stress-signal molecule that is involved in the modulation of growth and development of plants. There is evidence that this stress-signal molecule has a positive impact on the antioxidant defence system, but few studies have been done on determining the most effective concentration and its impact on the growth and development of cabbage plants cultivated in vitro. In the present experiment, we assessed the impact of three different concentrations of salicylic acid ( mM, 0.5 mM and 0. mM) on seed germination indexes, shoot initiation and proliferation, root development, as well as physiologic traits (phenolic and chlorophyll content). It has been found that a concentration of mM SA inhibited both seed germination and shoot development, which is probably related with suppression of GA-mediated pathway. Instead, the addition of 0. mM SA stimulated shoot proliferation rate, shortened the time for shoot initiation and increased shoot and root elongation. Our results provide the foundation for further studies related to the plant's agronomic performances when cultivated in the field.
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