| heal.abstract |
The ability of propagation of Euphorbia characias L., Euphorbia acanthothamnos Boiss, Genista acanthoclada D.C., Phlomis fruticosa L., Cistus incanus ssp. creticus L., Thymelaea hirsuta L. and Lavandula stoechas L. by seed and cuttings was studied all year round. Seeds of E. characias had a very high germination (80-100%) from December (100% within 10 days) to the end of March, while terminal cuttings showed the highest rooting (80%) in late May and midstem cuttings in late June (60%). Rooting of cuttings in general was low and in all cases occurred after six months. Seed germination of E. acanthothamnos was very low (10%) and the highest rooting of cuttings (60%) was found in November. Seeds of G. acanthoclada showed a maximum 20-35% germination from December to the end of April, while cuttings had 40-60% rooting from November to the end of February, when treated with IBA. Seeds of P. fruticosa collected in June showed the highest germination (80%) in December and January. Seeds collected in August or October had reduced germination. Rooting of cuttings was relatively high (50-70%) from November to the end of March and was favoured by IBA. Seeds of C. incanus appeared to have very low germination (maximum 30% in late March) and cuttings also had very low rooting (maximum 20% in August-September). Seed germination of T. hirsuta was found to be extremely low, just 10% from January to the end of March and no cuttings rooted at the periods tested. Seeds of L. stoechas had 100% germination within 10-20 days from October to the end of March. Propagation by cuttings was not tested. Unless stated otherwise, germination of the seeds took place in one month and rooting of the cuttings in two months. |
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