Published in Scientific Papers. Series B, Horticulture, Vol. LXV, Issue 1
Written by Doina CLAPA, Monica HÂRȚA
The aim of the study was to assess the drought tolerance of two varieties of strawberry, Tecla and Hecker, according to their reaction by morphometric characteristics to the presence of PEG 6000 in different concentrations in culture media (0 g/L - control, 10 g/L, 20 g/L, 30 g/L, 40 g/L, 50 g/L). The results show that cv. Hecker exhibited the lowest value of dry weight (66.08 ± 12.17) at 50 g/L PEG concentration. The highest concentrations of PEG 6000 (40 g/L and 50 g/L) considerably decreased the DW in the plantlets in both Tecla and Hecker cvs. High concentrations of PEG 6000 decreased significantly the plantlets’ length and proliferation rate in both cultivars. A dramatic decrease (71.77%) in average height was recorded in cv. Hecker at the highest concentration of PEG 6000 (50 g/L) when compared to the control, from 8.68 ± 0.13 cm to 2.45 ± 0.19 cm (PEG 6000 50 g/L). These results suggest that PEG 6000 disrupted the water metabolism in both strawberry cultivars.
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