INVESTIGADORES
MARINANGELI Pablo Alejandro
artículos
Título:
Paclobutrazol for height control of two Lilium L.A. hybrids grown in pots
Autor/es:
FRANCESCANGELI, NORA; MARINANGELI PABLO; CURVETTO, NÉSTOR
Revista:
SPANISH JOURNAL OF AGRICULTURAL RESEARCH
Editorial:
Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA)
Referencias:
Lugar: Madrid; Año: 2007 vol. 5 p. 425 - 425
ISSN:
1695-971X
Resumen:
Height control is often required in order to obtain bulb plants that are proportional to their pot size and to reduce post-harvest stem elongation. Plant growth regulators afford an effective means of controlling plant height. In this study, paclobutrazol (Pbz) was studied for use in the chemical dwarfing of potted Lilium plants —the hybrids ‘Ercolano’ and ‘Royal Respect’— for marketing. Their bulbs were dipped in the growth regulator (0, 50, 100, and 150 ppm) for 10 min before planting. Plant height (measured at 7 day intervals), the duration of the different stages of the growth cycle, the number of flower buds formed, and the number of open and aborted flowers were recorded. The average day and night air temperatures were 25 and 13ºC, respectively. Increasing Pbz dose progressively reduced the height of the ‘Ercolano’ hybrid by between 29% (46.2 cm; 50 ppm) and 45% (35.3 cm; 150 ppm) compared to control plants (64.4 cm), however, neither the duration of flowering nor the number of flowers was modified. The ‘Royal Respect’ hybrid responded with a marked shortening – by 45% (20.8 cm; 50 ppm) to 59% (28.2 cm; 150 ppm) in comparison with the average control height (51.1 cm), but in this case both the duration of flowering and the number of open flowers was reduced at the highest concentration. The feasibility of cultivating these Lilium hybrids for marketing in pots is demonstrated. However, the concentration of paclobutrazol should be adjusted according to the hybrid grown