Resumo

AUZAQUE-RODRIGUEZ, ORLANDO; BALAGUERA-LOPEZ, HELBER ENRIQUE; ALVAREZ-HERRERA, JAVIER GIOVANNI  e  FISCHER, GERHARD. The vernalization temperature in reutilized lily (Lilium sp.) bulbs affects the distribution of dry matter and flower yield. rev.colomb.cienc.hortic. [online]. 2011, vol.5, n.2, pp.251-262. ISSN 2011-2173.

Lily is propagated commercially with bulbs. For planting programs in Colombia, these bulbs must be imported, but this is an expensive procedure, which reduces profitability. However, through vernalization of bulbs that remain after cutting the flower, it is possible to obtain a new crop cycle. Therefore, the objective was to evaluate the effect of different temperatures in the vernalization of reutilized lily bulbs of the Asian hybrid Castello on the distribution of dry matter and flower quality. A completely randomized design was used with four treatments for three vernalization temperatures (-2°C, 3°C y 14°C) and a commercial control (imported bulbs), each treatment had three replications. The bulbs were stored for 8 weeks at the above-mentioned temperatures and then planted in the field. The commercial control produced greater dry mass for: flowers, stem, bulb and total; and better quality of flowers. With vernalization at -2°C and 3°C, a moderate dry mass for flowers, stems and bulbs was obtained, but with a low total dry mass; whereas lilies at these low temperatures bloomed abundantly and presented good quality flowers. At 14°C, no adequate remobilization of reserves of the bulbs took place, which negatively affected growth and flowering. Vernalization of reutilized lily bulbs is a practice that potentially could replace bulb imports, but more research needs to increase its efficiency.

Palavras-chave : assimilate translocation; asexual propagation; flowering.

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