ISHS Acta Horticulturae 331: WOCMAP I - Medicinal and Aromatic Plants Conference: part 3 of 4
EXPERIMENTS ON SEED GERMINATION OF SOME TILIA SPP. |
| Authors: | R. Magherini, S. Nin |
| Abstract:
Physical and mechanical dormancy is characteristic of Linden-trees, ornamental and medicinal species of increasing interest in Italy. The aim of this work was to test different techniques of seed germination in 3 Tilia species. Seeds of Tilia tomentosa, T. cordata, and T. platyphyllos were divided into 8 thesis, treatment combinations including sterilization. Treatments included pericarp removal, pre-cooling at 4°C for 7 months, superficial sterilization (NaClO and ethanol), acid scarification, application of giberellic acid and Thiram. Germination test were conducted at 22°C under 16 hours of light. Germination percentage and germination rate were determined. The hardened pericarp prevented any seed development. Both fungicide application and superficial sterilization proved to control seed pathogens development, although the use of disinfestans seemed to lower the germination percentage. Germination was improved by treatment with concentrated sulphuric acid, but was not affected by pre-cooling and GA3 application. The germination percentage of Tilia cordata resulted always very low. | |
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