UTILISATION OF AUTONOE MADEIRENSIS (MENEZES) SPETA AS AN ORNAMENTAL PLANT
Autonoe madeirensis (syn. Scilla maderensis) or Madeira squill is an endemic plant from Madeira Island with ornamental potential for pot and garden. Studies were done on its annual growth from germination to flowering and on propagation methods. Germination occurs rapidly when air temperatures are between 16 and 28°C, with percentages above 50% and reaching values of 80-96% after 4-9 weeks. After seed germination, a small bulb is formed; it takes 4 to 5 years to obtain a flowering bulb (minimum flowering size: 5 cm). The bulb size (bulb diameter) increases 0.5-1.5 cm per year. The annual growth during the juvenile period can be divided in two phases: emergence of leaves (9 months, October to June) and leaf senescence with bulb size growth (3 months, July to September). The annual growth of a flowering bulb can be divided in 3 phases: emergence of leaves and of inflorescence with leaf development and flowering (3 months, generally October-December); fruit formation and maturation (6 months, January-June); rest period of the bulb with partial/total leaf senescence (3 months, July-September). Vegetative propagation using the twin-scaling technique yields more than 76 new bulbs from bulbs with diameters of 6 cm or more; there is a reduction in 1-2 years to get a flowering bulb size when compared with seed germination propagation, which means that in 2-3 years a flowering bulb size can be obtained.
Dragovic, M.J.O. (2013). UTILISATION OF AUTONOE MADEIRENSIS (MENEZES) SPETA AS AN ORNAMENTAL PLANT. Acta Hortic. 1002, 413-419
Autonoe madeirensis, endemic plant, new ornamental, propagation, life cycle